JPH06123074A - Cellulose fiber-containing fiber structure and method for producing the same - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cellulose fiber-containing fiber structure in which the durability of W & W (wash and wear) and mechanical properties (tensile strength) are kept to a minimum and the original texture of cellulose fiber is maintained. . A cellulose fiber-containing fiber structure in which micropores existing inside the cellulose fiber are filled with a polymer of a monomer or / and a prepolymer having at least a polymerizable double bond that can be polymerized by irradiation with radiation, and the same. Production method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention maintains the original texture of cellulosic fibers by processing design considering the fine structure of cellulose, and has a durable W & W property (wash and wear property) and deterioration of mechanical properties of the fibers. The present invention relates to a cellulose fiber-containing fiber structure which is suppressed as much as possible and a method for producing the same. More specifically, by filling the micropores (hereinafter abbreviated as "pores") existing in the microstructure inside the amorphous portion of the cellulose fiber with the minimum required amount of the polymerizable monomer or / and the polymer of the prepolymer, the conventional fiber The present invention relates to a cellulose fiber-containing fiber structure for clothing, which avoids thickly coating a surface layer with a resin finishing agent, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, when a cellulosic fiber-containing fiber structure, particularly a product having a cellulosic fiber structure, is repeatedly washed after use, it has a wrinkle-free and easy-care property, that is, W.
& W property is required. In response to this demand, resin processing involving cross-linking between cellulose molecular chains has been conventionally performed. However, the wrinkle resistance (DCR) at the time of drying and the wrinkle resistance (WCR) at the time of wetting have not yet reached sufficient values, and neither DCR nor WCR have sufficient durability due to repeated washing. As enough W & W
The current situation is that they have not reached the goal.

As a method for improving WCR, conventionally, a resin swelling agent has been used in combination with a cellulose swelling agent such as polyethylene glycol or a derivative thereof, and drying and heat treatment in a state where the amorphous portion is swollen, a cold batch method, Although curing with heated steam has been proposed, the former has insufficient durability and wrinkle resistance due to non-uniform cross-linking due to migration of the resin processing agent during drying, and the latter two have the same initial wrinkle resistance. Although improved, there was a problem in durability and productivity.

Further, a method of adhering an emulsion compound of polyethylene to the fiber surface has been adopted for the purpose of improving the initial DCR, but this method not only has no durability of DCR but also lowers SR property against oily stains. There was a drawback. On the other hand, if a large amount of the glyoxal-based resin finishing agent that has been conventionally used is used, DC
It is known that both R and WCR are improved, but they are not practically usable due to rough hardening of texture and remarkable deterioration of mechanical properties. In addition, self-emulsifying and surfactant emulsifying type processing agents of high molecular weight polymers such as acrylic emulsions and polyurethane emulsions coat the fiber surface and lose the plastic fiber-like texture and other properties. There are drawbacks.

Further, for the post-processing of the cellulose fiber structure utilizing radiation, as disclosed in JP-A-50-4399, an acrylate monomer is added to the cellulose in the presence of a polymerization initiator for the purpose of improving wrinkle resistance. There has been proposed a method of forming a crosslinked structure by ion-irradiating (γ-ray, electron beam) treatment after contact-grafting with fibers. This method has problems in that the polymerization initiator remains in the fiber, the process is complicated, and the quality and management are poor. Japanese Patent Laid-Open No. 50-7
As a method for imparting hydrophilicity to polyester fibers, Japanese Patent No. 7691 proposes a method in which the fibers are impregnated with diacrylate or dimethacrylate having a polyethylene glycol group having a molecular weight of 300 or more, and the fibers are irradiated with an electron beam at a low temperature. . This method is a method of coating and immobilizing a hydrophilizing agent on the fiber surface, and has a drawback of having a costly step of solidifying at low temperature. JP-A-56-53
Japanese Patent No. 279 relates to a method for imparting permanent press characteristics to fiber products such as polyester, nylon, cotton, viscose rayon, and wool. That is, after the urethane acrylate-based epoxy acrylate-based, acrylated polyester-based, acrylamide-based monomers and prepolymers and water-soluble monomers and prepolymers having a molecular weight of 300 or less are applied to the portion to be creased and pressed, before the pressing step or It relates to a method of curing with ultraviolet rays or electron beams later. These, the method disclosed in, is not a processing design considering the microstructure of the cellulose fiber in any method,
Therefore, it is impossible to satisfy these requirements of the present inventors, which is to maintain the original texture of the cellulose fiber and reduce the deterioration of the durable W & W property and mechanical properties.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a cellulose fiber-containing fiber structure which is excellent in initial W & W property, has durability to retain its performance after repeated washing, and has little deterioration in mechanical properties. It is an object of the present invention to provide a method which is excellent in industrial productivity.

[0007]

Means for Solving the Problems The present inventors have found that a durable W & W property and a reduction in mechanical properties are small, the original texture of cellulose fiber is maintained, and the productivity is high, and a cellulose fiber-containing fiber structure and As a result of earnest studies on the manufacturing method, the object was achieved. That is,
Cellulose fiber-containing fiber structure in which the micropores existing inside the cellulose fiber are filled with a polymer of a monomer or / and a prepolymer having at least a polymerizable double bond, and in the micropores existing inside the cellulose fiber Is filled with a monomer or / and a prepolymer having a polymerizable double bond having a molecular size capable of filling the micropores,
Next, the method for producing a cellulose fiber-containing fiber structure according to claim 1, wherein the monomer or / and the prepolymer is polymerized by irradiation with radiation.

The present invention has been accomplished by incorporating pores in an amorphous portion, which have not been sufficiently considered in conventional resin processing, into the processing design. That is, the distribution of pores present in the amorphous portion of the cellulose fiber was determined by Cellulose Chem. Tec
Henology, 2,343-358 (1968), "Solution exclusion tec"
It was measured by a method according to “hnique”. Table 1 shows measured values of various cellulose fibers under water swelling.

[0009]

[Table 1]

According to this, the pore size inside the cellulose fiber is distributed over several hundred angstroms (Å) under water swelling, and this distribution state can be changed by the pretreatment method or modification of the fiber. I understand.
Therefore, if the distribution and size of the pores are changed, a monomer or prepolymer having a molecular size that can be filled in the pores is allowed to enter the pores, and then polymerized by irradiation with radiation, the fiber surface of the polymerizable finishing agent Migration can be prevented, and a small amount of a polymerizable processing agent enables graft polymerization in the pores, homopolymerization, and formation of a crosslinked structure. Therefore, maintaining the original texture of cellulose fiber,
Moreover, it is considered that durable W & W properties can be obtained without deterioration of mechanical properties due to the initiator. In the conventional method, when the resin-treating agent is observed as single fibers, it is migrated and immobilized on the surface layer, whereas according to the method of the present invention, the resin-treating agent can be filled inside the pores. Therefore, it is considered that the resin processing agent can be uniformly distributed throughout the inside of the fiber, and the effect of the present invention is exhibited. In the present invention, the effective pore size is 10 ² nm (1
0 ³ Å) or less has enabled polymerizable monomer in the present invention, the molecular size of the prepolymer is at 10 ² nm or less, preferably 50nm or less, more preferably 10nm or less. Moreover, the distribution of pore size is 2 to 10
Those in the mm range preferably occupy the largest volume in the total pore volume of 20 mm or less.

In the present invention, it is important to fill the pores with a polymerizable monomer or / and a prepolymer which can be cured by irradiation and to polymerize it, but a resin processing agent used in a conventional resin processing method such as aminoplast. By coexisting a polymer of a polymerizable monomer or / prepolymer curable by irradiation with radiation in the pores, the object can be achieved more. Further, a water-soluble oligomer, a water-soluble polymer, or an inorganic fine particle sol such as organic fine particle sol or ceramics may be used in combination with the polymerizable monomer or / and prepolymer curable by irradiation with radiation.

The technology of the present invention is also applied to functional processing agents such as resins, monomers, surfactants, oils, antibacterial agents, hygroscopic agents, water repellents, antistatic agents, ultraviolet absorbers, infrared absorbers and fluorescent whitening agents. , Swelling agent, dissolving agent, decomposing agent, embrittlement agent, metal particles,
It also enables the immobilization of magnetic materials, flame retardants, anti-dye agents, oxidizing agents, reducing agents, fragrances, anti-static agents, deodorants, bacteria, enzymes, colorants and the like.

The monomer or prepolymer having a polymerizable double bond that can be used in the present invention is as follows (meta)
Acrylates are mentioned. Hereinafter, the term “(meth) acrylate” means both acrylate and methacrylate.

The monomer group includes (meth) acrylic acid and salts thereof, and phenoxy polyethylene glycol (meth).
Acrylate, methoxy polyethylene glycol (meth) acrylate, nonylphenol polyethylene glycol (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, glycidyl (meth) acrylate, Mono (2
-(Meth) acryloyloxyethyl) acid phosphate, N, N-dimethylaminoethyl (meth) acrylate, 2- (meth) acryloyloxyethylsuccinic acid and its salts, 2- (meth) acryloyloxyethylphthalic acid and It is represented by monofunctional (meth) acrylates represented by its salt, tris (2-hydroxyethyl) isocyanuric acid (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, and the like. Examples include polyfunctional (meth) acrylates.

The prepolymer group includes ethylene glycol di (meth) acrylate, polyethylene glycol (meth) acrylates, ethylene oxide-modified 4,
4-dihydroxydiphenylsulfone di (meth) acrylate, polyethers such as ethylene oxide modified bisphenol A di (meth) acrylate, ethylene glycol diglycidyl di (meth) acrylate, polyethylene glycol diglycidyl di (meth) acrylate, propylene glycol di Epoxy ester represented by glycidyl di (meth) acrylate, polypropylene glycol diglycidyl di (meth) acrylate, ethylene oxide modified bisphenol A diglycidyl di (meth) acrylate, propylene oxide modified bisphenol A diglycidyl di (meth) acrylate, phenylglycidyl Ether (meth) acrylate hexamethylene diisocyanate, phenyl glycidyl ether (meth) ac Rate isophorone diisocyanate, phenyl glycidyl ether (meth) acrylate tolylene diisocyanate, glycerol di (meth)
Acrylate hexamethylene diisocyanate, glycerin di (meth) acrylate isophorone diisocyanate, glycerin di (meth) acrylate tolylene diisocyanate, pentaerythritol tri (meth) acrylate hexamethylene diisocyanate pentaerythritol tri (meth) acrylate isophorone diisocyanate, pentaerythritol triisocyanate (Meth) acrylate tolylene diisocyanate, polyethylene glycol di (meth) acrylate hexamethylene diisocyanate, polyethylene glycol di (meth) acrylate isophorone diisocyanate, polyethylene glycol di (meth) acrylate tolylene diisocyanate, polypropylene glycol di (meth) acrylate hexamethylene diisocyanate Urethane (meth) acrylates typified by polypropylene glycol di (meth) acrylate isophorone diisocyanate, polypropylene glycol di (meth) acrylate tolylene diisocyanate, and the like, saturated polyester (meth) acrylates, unsaturated polyester ( (Meth) acrylates, polyester / urethane-based (meth) acrylates, polyacetal-based (meth) acrylates,
Examples thereof include polybutadiene (meth) acrylates.

The above-mentioned monomers and prepolymers are used with water as a main solvent. If necessary, a solvent selected from alcohols, cellosolves, ketones and amides, which are miscible with water, is used in combination with water. It doesn't matter.

The radiation used in the present invention may be γ-rays or electron rays, but electron rays are excellent in terms of safety, operability and economy.

The suitability of these compounds that can be polymerized by irradiation with radiation is preferably such that the molecular size is smaller than the pore size of the amorphous part of the cellulose fiber to be treated. Although the preferable molecular size varies depending on the pore size, it is usually 1 to 10
nm is preferable, and more preferably 2 to 5 nm. Further, from the viewpoint of the polymerization rate at the time of irradiation with radiation, an acrylate compound is generally preferred because it has a higher curing rate than a methacrylate compound. The pores inside the cellulose fibers are preferably swollen with water or a cellulose swelling agent.

The (meth) acrylate compound is contained in an amount of 0.1 to 20 relative to cellulose and a cellulose-containing fiber structure.
It can be added by weight%, but preferably 0.2 to 5
%, And more preferably 0.2 to 2.0% by weight.

Cellulose resin processing agents which may be used in combination in the present invention include dimethylol urea, trimethylol melamine and its partially methylated product, dimethylol ethylene urea, hexamethylol melamine and its partially methylated product, dimethylol alkyl triazone. , Methylated dimethylolurone, dimethylol dihydroxyethylene urea, dimethylol propylene urea, 1,3-dimethyl4,5-dihydroxyethylene urea, tetramethylol acetylene urea, dimethylol butylene urea, dimethylol pentylene urea, alkyl carbamate, 1,3
-Dimethylol 4,6-dihydroxypentylene urea,
Formalin compounds such as dimethylol acrylamide, formalin and tetraoxane can be mentioned. Preferably dimethylol dihydroxyethylene urea, 1,3-
Dimethyl 4,5-dihydroxyethylene urea. The amount of the resin processing agent used is 0 to 20% by weight based on the cellulose fiber-containing fiber structure.

Resin processing for cellulose that can be used in the present invention
AlC is a reaction catalyst that can be used in combination with the agent.
l₃, Al₂(SO_Four)₃, MgCl₂, Mg (H₂P
O_Four)₂, Zn (BF_Four)₂, Mg (BF_Four)₂, Mg
(ClO_Four)₂, Al₂(OH) _FourCl₂Various kinds of money
Genus salts (including water of crystallization), various alkanolamines
Acid salts of. The amount of these reaction catalysts used is
It is 1 to 20% by weight with respect to the resin processing agent for the base.

Maintaining the texture of the cellulose fiber-containing fiber structure of the present invention, imparting durable W & W property, and reducing the deterioration of mechanical properties can be carried out by various methods. Typically, an aqueous solution of a monomer or / and a prepolymer curable by irradiation or a solvent selected from water-miscible alcohols, cellosolves, ketones, and amides is used in combination with water. The processing agent is adjusted with, and applied to the cellulose fiber-containing fiber structure and then dried or irradiated with radiation to cure the (meth) acrylate compound monomer and / or prepolymer in a wet state, and then dried if necessary. The method of doing is adopted. As another example of the method, a (meth) acrylate compound that is a radiation-curable monomer and a prepolymer, an aqueous solution of a resin-treating agent for cellulose and a curing catalyst for the resin-treating agent, or a mixture with water, if necessary, is used. A possible solvent, selected from alcohols, cellosolves, ketones, and amides, is used in combination with water to prepare a processing agent, which is applied to the cellulose fiber-containing fiber structure, and then dried or in a wet state ( A method of irradiating with radiation for curing the (meth) acrylate compound monomer and / or prepolymer, then drying if necessary, and curing for crosslinking reaction of the resinous agent for cellulose is adopted.

Further, by adding a resin processing agent for cellulose,
The object can be achieved by a method of irradiating with radiation after drying and curing, or a method of irradiating with radiation after drying and then curing, or irradiation with radiation in a wet state, and then drying and curing.

The irradiation is carried out at 0.5 to 10 Mrad, preferably 0.5 to 5 Mrad, in consideration of the decrease in strength of the cellulose fiber-containing fiber structure and the polymerizability of the monomer and / or prepolymer. Preferably 0.
It is 5 to 3 Mrad.

The fiber structure which can be used in the present invention includes:
Natural cellulose fibers such as cotton, hemp, flax and pulp, 100% cellulose fiber products such as regenerated cellulose fibers such as viscose rayon (including polynosic rayon), copper ammonia ray and solvent spinning rayon, and mixed products thereof. Alternatively, a mixture with a synthetic fiber such as polyester, acrylic, polyamide, polyethylene or polypropylene may be used. Examples of the form of the structure include yarn, woven fabric, knitted fabric, non-woven fabric, paper and the like.

Among the cellulose fibers of the present invention, cotton is preferably treated with mercerization and / or liquid ammonia in order that the effects of the present invention can be exhibited more effectively. Also, in the case of regenerated cellulose fiber, the effect of the present invention can be effectively exhibited, which is preferable.

[0027]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. Prior to the examples, the evaluation methods used in the examples will be shown.

Wrinkle resistance: The wrinkle recovery angle in JIS L-1059 B method (Monsanto method) was evaluated by the sum of vertical and horizontal directions of wrinkle recovery angle during dry and wet (indicated by DCR and WCR, respectively). The durability was evaluated by the wrinkle recovery angle after washing 20 times according to JIS L-0217 103 method.

Tensile strength: JIS L-1096 Tensile strength A method (strip method) was used for evaluation. Unit is kg /
It is expressed in 2.5 cm.

Bending flexibility; JIS L-1096 Bending flexibility A
It evaluated by the method (45 degree cantilever method). Unit is mm
It is represented by.

Observation of (MA) acrylate monomer or prepolymer in cellulose fiber inside XMA; the sample was dyed in a 2% by weight aqueous osmic acid solution at a bath ratio of 1: 100 at room temperature for 4 days with shaking, and then this dyed sample was dyed constantly. The osmium atom (Os) was scanned in the single fiber cross-sectional direction (XX ′) as shown in FIG. 1 by the method and analyzed by an X-ray microanalyzer. From the line profile of the Os strength, the distribution state of the polymer inside the single fiber was grasped.

Case 1 (FIG. 2) shows the case where the polymer is almost uniformly filled, and Case 2 (FIG. 3) shows the case where the polymer has a concentration distribution between the central portion and the outer layer portion. (Fig. 4) shows the case 4 when the polymer is localized only in the surface layer.
(FIG. 5) shows the case where no polymer is present.

Examples 1-2 Polynodix staple fabric (Tough cell fabric manufactured by Toyobo Co., Ltd .; 40 × 40/115 × 65, 135 g / m ² ) is shown in Table 2 as a processing liquid (the molecular size of the processing agent is about 2 to 3 nm). )
Immerse in 80% pick-up, irradiate with 2 Mrad electron beam while still wet, then 120 ° C
It was dried for 5 minutes. Then, after washing with hot water at 80 ° C. for 10 minutes, a fixed length was set on the pin frame and drying was performed at 120 ° C. for 5 minutes. Table 2 shows these characteristics.

Examples 3 to 4 Cotton fabric mercerized cloth (50 × 50/144 × 81)
102 g / m ² ) was immersed in the working fluid shown in Table 2 and 60
% So that the pickup is a pickup, and thereafter the same processes as in Examples 1 and 2 were performed. Table 2 shows these characteristics.

Comparative Example 1 A polynosix staple fabric (Tough cell fabric manufactured by Toyobo Co., Ltd .; 40 × 40/115 × 65, 135 g / m ² ) was dipped in the processing liquid shown in Table 2 and squeezed to 80% pickup, and then. After steaming at 107 ° C. for 10 minutes and then washing with hot water at 80 ° C. for 10 minutes, a fixed length was set on a pin frame as in Examples 1 and 2, and drying was performed at 120 ° C. for 5 minutes. Table 3 shows these characteristics.

Comparative Example 2 Using the same woven fabric as in Example 1, immersing it in the processing liquid shown in Table 2 and squeezing it so that the pickup was 80%, 120 ° C. × 5
After drying for 1 minute, irradiation with ultraviolet rays of 1500 mJ / cm ² was performed, followed by washing with hot water and drying under a fixed length set as in Example 1. The results are shown in Table 3.

Comparative Example 3 The procedure of Comparative Example 1 was repeated, except that the cotton fabric used in Example 3 (silkketo fabric) was used in place of the polynosix staple fabric.

COMPARATIVE EXAMPLE 4 The procedure of Comparative Example 2 was repeated, except that the cotton fabric used in Example 3 (silkketo cloth) was used in place of the polynosix staple fabric.

Comparative Example 5 The same procedure as in Example 3 was carried out except that polyethylene glycol was used in place of 200EA (manufactured by Kyoeisha Oil and Fat Chemical Co., Ltd .; epoxy ester acrylate) as the working fluid.

Various characteristics obtained in Comparative Examples 3, 4, and 5 are shown in Table 3.
Shown in. In Comparative Examples 1 to 5, the polymer was not present inside the cellulose single fiber, or even if it was present, it was present only in the vicinity of the surface layer portion. In each of Examples 1 to 4, the cellulose monofilament was uniformly filled with the polymer, and the WCR was particularly significantly improved.

Example 5 A polynosix staple fabric (Tough cell fabric manufactured by Toyobo Co., Ltd .; 40 × 40/115 × 65, 135 g / m ² ) was dipped in the working liquid shown in Table 4 and squeezed to 80% pickup, Irradiate 1 Mrad of electron beam while it is wet,
Next, the pin frame was set to a fixed length, dried at 120 ° C. for 5 minutes, and then cured at 150 ° C. for 3 minutes. Then 80 ℃ ×
After washing in hot water for 10 minutes, set a fixed length on the pin frame,
It was dried at 120 ° C. for 5 minutes.

Example 6 The same procedure as in Example 5 was carried out except that the electron beam irradiation of 1 Mrad in Example 5 was increased to 3 Mrad.

Example 7 Using the working fluid shown in Table 4, electron beam irradiation was conducted at 2 Mrad.
Example 5 was repeated except that

Comparative Example 6 A polynosix staple fabric similar to that of Example 5 was prepared in Table 4
The sample was dipped in the processing liquid shown in (1), squeezed so that it would be a 80% pickup, set to a fixed length on a pin frame, dried at 120 ° C. for 5 minutes, and then cured at 150 ° C. for 3 minutes. Then 80
After washing with hot water at ℃ for 10 minutes, the pin frame was set to a fixed length and dried at 120 ℃ for 5 minutes.

Examples 8 to 10 Cotton fabric mercerized (50 × 50/144 × 81)
102 g / m ² ) was dipped in the working fluid shown in Table 3 to obtain 60
% Squeezed to be a pickup, 2Mr while wet
It was irradiated with an electron beam of ad, then set to a pin frame at a fixed length, dried at 120 ° C. for 5 minutes, and then cured at 150 ° C. for 3 minutes. Then, after washing with hot water at 80 ° C. for 10 minutes, a fixed length was set on the pin frame and drying was performed at 120 ° C. for 5 minutes.

Example 11 After irradiation with the electron beam of 2 Mrad in Example 8, 120 ° C. ×
Reverse the process of drying for 5 minutes, ie 120 ° C x 5
After drying for a minute, the same procedure as in Example 8 was carried out except that irradiation with an electron beam was changed.

The results of Examples 5-11 and Comparative Examples 6-9 are as shown in Table 5.

Comparative Examples 7 to 8 Cotton woven mercerized cloth (50 × 50/144 × 81)
102 g / m ² ) was dipped in the working fluid shown in Table 4, and 60
% Squeeze so that it will be a pickup, set a fixed length on a pin frame, dry at 120 ° C for 5 minutes, and then 150 ° C × 3
I got a minute cure. Then, after washing with hot water at 80 ℃ for 10 minutes,
The pin frame was set to a fixed length and dried at 120 ° C. for 5 minutes.

Example 12 Cotton fabric mercerized (50 × 50/144 × 81)
102 g / m ² ) was further treated with liquid ammonia by a conventional method, and a cotton fabric was dipped in the processing liquid shown in Table 4 to obtain 62%.
Squeeze to be a pickup, 2 Mra while wet
The sample was irradiated with the electron beam of d, then set to a pin frame at a fixed length, dried at 120 ° C. for 5 minutes, and then cured at 150 ° C. for 3 minutes. Then, after washing with hot water at 80 ° C. for 10 minutes, a fixed length was set on the pin frame and drying was performed at 120 ° C. for 5 minutes.

The results of Example 12 and Comparative Examples 6 to 8 are shown in Table 6. The distribution of the polymer in the single fibers of the fiber structures of Examples and Comparative Examples of the present invention was analyzed by the above X-ray microanalyzer method, and the distribution of the polymer was analyzed in Cases 1 to 1.
The results classified into Case 4 are also shown in Tables 2 to 6.

Case 1 shows the case where the polymer is uniformly distributed inside the fiber, and its typical line profile is shown in FIG. Case 2 shows the case where the polymer has a concentration gradient, and its representative line profile is FIG. 3. Case 3 shows the case where the polymer is localized in the surface layer of the fiber. The profile is shown in FIG. Case 4 is a case where no polymer is present, and its typical line profile is shown in FIG. In the case of the present invention, it can be seen that the distribution of the polymer is Case 1 or Case 2.

[0052]

[Table 2]

[0053]

[Table 3]

[0054]

[Table 4]

[0055]

[Table 5]

[0056]

[Table 6]

[0057]

INDUSTRIAL APPLICABILITY In the cellulose fiber-containing fiber structure obtained by the processing design in consideration of the fine structure of cellulose according to the present invention, the processing agent which is polymerized by irradiation is uniformly accompanied by graft polymerization in the pores of the amorphous part. By being filled with the polymer, it is possible to suppress the durable W & W property and the deterioration of the mechanical properties (tensile strength) of the fiber structure as much as possible, and it is also possible to maintain the original texture of the cellulose fiber structure. .

[Brief description of drawings]

FIG. 1 is an example of a schematic view of a cross section of a cellulose single fiber (cotton) constituting a fiber structure of the present invention.

FIG. 2 is an example of a profile showing a uniform distribution of a polymer (case 1) when the cross section of the cellulose single fiber of the present invention is analyzed by XMA line.

FIG. 3 is an example of a profile showing a distribution having a concentration gradient of a polymer (Case 2) when the cross section of the cellulose single fiber of the present invention is analyzed by XMA line.

FIG. 4 is an example of a profile showing that the polymer is localized on the surface when the cross section of the cellulose single fiber of the comparative example is subjected to XMA line analysis (Case 3).

FIG. 5: When no polymer of Comparative Example is present (Case 4)
3 is an example of a profile of an XMA line analysis of a cross section of the cellulose single fiber of FIG.

[Explanation of symbols]

 I ... Cross section of cellulose monofilament (cotton) X, X '... XMA line analysis position

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[Procedure amendment]

[Submission date] October 18, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

Claims (2)

[Claims] 1. A monomer or / wherein the micropores present inside the cellulose fiber have at least a polymerizable double bond.
And a cellulose fiber-containing fibrous structure filled with a polymer of a prepolymer. 2. A monomer or / and a prepolymer having a polymerizable double bond having a molecular size capable of filling the fine pores is filled in the fine pores existing inside the cellulose fiber, and then the mixture is irradiated with radiation. The method for producing a cellulose fiber-containing fiber structure according to claim 1, wherein the monomer or / and the prepolymer are polymerized.