CN105256401B - A kind of bio-modification technique of the acid fiber of good spinnability - Google Patents
A kind of bio-modification technique of the acid fiber of good spinnability Download PDFInfo
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- CN105256401B CN105256401B CN201510730741.XA CN201510730741A CN105256401B CN 105256401 B CN105256401 B CN 105256401B CN 201510730741 A CN201510730741 A CN 201510730741A CN 105256401 B CN105256401 B CN 105256401B
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- 239000000835 fiber Substances 0.000 title claims abstract description 57
- 239000002253 acid Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012986 modification Methods 0.000 title description 4
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 53
- 239000004626 polylactic acid Substances 0.000 claims abstract description 53
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000009987 spinning Methods 0.000 claims abstract description 16
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 10
- 238000002074 melt spinning Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 244000005700 microbiome Species 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims description 21
- 241000894006 Bacteria Species 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 14
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 8
- 229920001747 Cellulose diacetate Polymers 0.000 claims description 7
- 241001147746 Lactobacillus delbrueckii subsp. lactis Species 0.000 claims description 7
- 241000194035 Lactococcus lactis Species 0.000 claims description 7
- 229920002472 Starch Polymers 0.000 claims description 7
- 235000014897 Streptococcus lactis Nutrition 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 230000002779 inactivation Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000010445 mica Substances 0.000 claims description 7
- 229910052618 mica group Inorganic materials 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 239000008107 starch Substances 0.000 claims description 7
- 235000019698 starch Nutrition 0.000 claims description 7
- 238000009736 wetting Methods 0.000 claims description 7
- 235000014655 lactic acid Nutrition 0.000 claims description 4
- 239000004310 lactic acid Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 238000000855 fermentation Methods 0.000 abstract description 14
- 230000004151 fermentation Effects 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004904 shortening Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
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- 239000004753 textile Substances 0.000 description 2
- 235000021537 Beetroot Nutrition 0.000 description 1
- 241000219310 Beta vulgaris subsp. vulgaris Species 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229920002494 Zein Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 229940099112 cornstarch Drugs 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000006074 cyclodimerization reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
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- 229940093612 zein Drugs 0.000 description 1
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- Materials For Medical Uses (AREA)
Abstract
The invention discloses a kind of biological modified methods of the acid fiber of good spinnability, are prepared via a method which to obtain：Plurality of raw materials is added in high-speed mixer, polydactyl acid mixture is obtained after high speed dispersion；Mixed uniformly polydactyl acid mixture is made polydactyl acid master batch, and is dried in vacuo by double screw extruder melt blending, extrusion；By polydactyl acid functional agglomerate be sliced and be dried in vacuo common polylactic acid slice put into high-speed mixer be uniformly mixed, mixture obtains modified polylactic acid fiber on melt spinning machine through round spinneret orifice spinning, then microorganism is carried out to be modified and strictly control fermentation parameter, different from common ferment at constant temperature, certain moment is taken to be heat-treated, shortening fermentation time can be reached, obtain the purpose of unexpected modified effect.
Description
Technical field
The present invention relates to a kind of bio-modification techniques of the acid fiber of good spinnability, belong to field of textiles.
Background technology
The raw materials for production lactic acid of acid fiber by polylactic (PLA) is made from cornstarch, so being also known as this fiber
Zein fiber can be made with garden beet or cereal etc. through glucose fermentation, and the polymeric cost of lactic acid is prepared with reduction.Pass through breast
The chemical polymerization of sour Cyclodimerization object or the direct polymerization of lactic acid can obtain the polylactic acid of high molecular weight.Using polylactic acid as raw material
Obtained product has good biocompatibility and Bioabsorbable and biocidal property, anti-flammability, and degradable
In thermoplastic macromolecule material, PLA has best heat resistance.
With the domestic and international exploitation mechanism of acid fiber by polylactic and being on the increase for enterprise, acid fiber by polylactic is in the textile industry
Application will be more and more extensive.Using the product that polylactic acid is obtained as raw material, there is good biocompatibility and biological absorbable
Property, and the performances such as biological degradability, water imbibition, biocidal property, anti-flammability well, but be easy to shrink under wet, thermal environment, stick
Knot, influences the processing and application of acid fiber by polylactic.
Prior art has disclosed the methods of a variety of modified polylactic acid fibers, such as Chinese patent application 201210096514.2
A kind of preparation method of hydrolytic-resistant modified polylactic acid fiber is disclosed, including：It is low in parts by weight by 70~98.9 parts of polylactic acid
1~30 part of molecular weight polyester, 0.1~5.0 part of mixing of multi-functional polycarbodiimide, carries out melt blending granulation after mixing
Master batch, by obtained master batch it is vacuum dried after by melt spinning, winding obtain undrawn yarn, finally carry out drawing-off, i.e.,
Obtain modified acid fiber by polylactic.The modified polylactic acid fiber of the invention has excellent feel and flexibility, and can realize
Low temperature dyeing, the dye-uptake higher of high-temperature dyeing can avoid what mechanical property when high-temperature process was deteriorated since hydrolytic Resistance is good
Problem.But due to the addition of cross-linking type polycarbodiimide, a small amount of irritative gas is will produce in spinning engineering to human body
Cause certain injury.
Somebody mixes the PLA of different optical textures according to a certain percentage, finds under certain component and ratio, intentionally
Unimaginable effect.And the research to recipe ingredient is blended, essentially consist in the cellulose to addition, other components and component
Between account between compatibility.Also patent document finds that modified PLA can be improved using special-shaped spinneret orifice in melt spinning
It is especially good that the Moisture absorption ＆ moisture conductivity of fiber, especially pentagon profile spinneret spin pentagon abnormity PLA fiber effects.But
These technologies are all without solving the disadvantage that acid fiber by polylactic is not easy dye, and the spinnability of abnormity PLA fibers can be by shadow
It rings.
The present invention is intended to provide a kind of biological modified method of the acid fiber of good spinnability, is especially different from commonly
Ferment at constant temperature takes certain moment to be heat-treated, and can reach shortening fermentation time, obtains the purpose of unexpected modified effect.
Invention content
The shortcomings that present invention is directed in the prior art, the present invention is intended to provide a kind of good acid fiber of novel spinnable
Biological modified method, by carrying out bio-modification to acid fiber by polylactic, obtained fabric performance is excellent, process Environmental Safety.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of biological modified method of the acid fiber of good spinnability, its step are as follows：
（1）It is equipped with raw material by following parts by weight, is then added in high-speed mixer and is uniformly dispersed to obtain polydactyl acid
Mixed raw material：
72-75 parts of PLA polylactic acid；
2-3 parts of hydroxypropul starch；
2-3 parts of cellulose diacetate；
1.1-1.6 parts of mica powder；
（2）Mixed uniformly polydactyl acid mixed raw material is made by double screw extruder melt blending, extrusion and is changed
Property polylactic acid master batch, and be dried in vacuo；
（3）Polydactyl acid functional agglomerate is sliced 30 parts and is dried in vacuo common 80 parts of polylactic acid slice and puts into high speed
It is uniformly mixed in mixing machine, mixture obtains modified polylactic acid fiber on melt spinning machine through round spinneret orifice spinning；
The spinning temperature is 210-215 DEG C, and winding speed is 1700-1800 m/min；Drawing temperature is 80-82 DEG C,
Drafting multiple is 2.8-3.2 times；
（4）Microorganism is modified：
By lactobacillus lactis, Lactococcus lactis according to quantity ratio be 1:1.2 are configured to composite bacteria agent；
After modified polylactic acid fiber obtained water spray wetting, composite bacteria liquid is uniformly sprayed, fermentation 20 is small at 38 DEG C of constant temperature
When, be brought rapidly up to 45 DEG C holding 2s, then restore 38 DEG C continue ferment 100-120min.
（5）Drying：80-90 DEG C drying fibrous, can achieve the purpose that inactivation and drying simultaneously.
It is most important to the control of the bacterial strain ratio and fermentation time and temperature of fermentation, different bacterial strains is controlled, is fermented
As a result technique can be very different, it is poly- that the present inventor is found that several particularly excellent fermentations are modified in a large amount of experiment
The technique of acid fiber is applied referring to the series of other present invention.
And the present invention particularly has found, is different from common ferment at constant temperature, takes certain moment to be heat-treated, can reach
Shorten fermentation time, obtains the purpose of unexpected modified effect.
The invention has the beneficial effects that：
（1）Modified polylactic acid fiber good hygroscopicity produced by the present invention, Yi Shangran, good spinnability, manufactured fabric performance
It is good.
（2）Modified polylactic acid fiber raw material produced by the present invention is simple, and makes full use of biofermentation technique, ring health care
Health noresidue is a kind of completely new, creative technique.
Specific implementation mode
Embodiment 1：
A kind of biological modified method of the acid fiber of good spinnability, its step are as follows：
（1）It is equipped with raw material by following parts by weight, is then added in high-speed mixer and is uniformly dispersed to obtain polydactyl acid
Mixed raw material：
72 parts of PLA polylactic acid；
3 parts of hydroxypropul starch；
2 parts of cellulose diacetate；
1.6 parts of mica powder；
（2）Mixed uniformly polydactyl acid mixed raw material is made by double screw extruder melt blending, extrusion and is changed
Property polylactic acid master batch, and be dried in vacuo；
（3）Polydactyl acid functional agglomerate is sliced 30 parts and is dried in vacuo common 80 parts of polylactic acid slice and puts into high speed
It is uniformly mixed in mixing machine, mixture obtains modified polylactic acid fiber on melt spinning machine through round spinneret orifice spinning；
The spinning temperature is 210 DEG C, and winding speed is 1800 m/min；Drawing temperature is 80 DEG C, drafting multiple 3.2
Times；
（4）Microorganism is modified：
By lactobacillus lactis, Lactococcus lactis according to quantity ratio be 1:1.2 are configured to composite bacteria agent；
After modified polylactic acid fiber obtained water spray wetting, composite bacteria liquid is uniformly sprayed, fermentation 20 is small at 38 DEG C of constant temperature
When, be brought rapidly up to 45 DEG C holding 2s, then restore 38 DEG C continue ferment 100min.
（5）Drying：90 DEG C drying fibrous, can achieve the purpose that inactivation and drying simultaneously.
Modified polylactic acid fiber spinnability obtained is splendid, is significantly better than common acid fiber by polylactic.
Embodiment 2：
A kind of biological modified method of the acid fiber of good spinnability, its step are as follows：
（1）It is equipped with raw material by following parts by weight, is then added in high-speed mixer and is uniformly dispersed to obtain polydactyl acid
Mixed raw material：
75 parts of PLA polylactic acid；
2 parts of hydroxypropul starch；
3 parts of cellulose diacetate；
1.1 parts of mica powder；
（2）Mixed uniformly polydactyl acid mixed raw material is made by double screw extruder melt blending, extrusion and is changed
Property polylactic acid master batch, and be dried in vacuo；
（3）Polydactyl acid functional agglomerate is sliced 30 parts and is dried in vacuo common 80 parts of polylactic acid slice and puts into high speed
It is uniformly mixed in mixing machine, mixture obtains modified polylactic acid fiber on melt spinning machine through round spinneret orifice spinning；
The spinning temperature is 215 DEG C, and winding speed is 1700 m/min；Drawing temperature is 82 DEG C, drafting multiple 2.8
Times；
（4）Microorganism is modified：
By lactobacillus lactis, Lactococcus lactis according to quantity ratio be 1:1.2 are configured to composite bacteria agent；
After modified polylactic acid fiber obtained water spray wetting, composite bacteria liquid is uniformly sprayed, fermentation 20 is small at 38 DEG C of constant temperature
When, be brought rapidly up to 45 DEG C holding 2s, then restore 38 DEG C continue ferment 120min.
（5）Drying：80 DEG C drying fibrous, can achieve the purpose that inactivation and drying simultaneously.
Modified polylactic acid fiber spinnability obtained is splendid, is significantly better than common acid fiber by polylactic.
Embodiment 3：
A kind of biological modified method of the acid fiber of good spinnability, its step are as follows：
（1）It is equipped with raw material by following parts by weight, is then added in high-speed mixer and is uniformly dispersed to obtain polydactyl acid
Mixed raw material：
73 parts of PLA polylactic acid；
3 parts of hydroxypropul starch；
2 parts of cellulose diacetate；
1.5 parts of mica powder；
（2）Mixed uniformly polydactyl acid mixed raw material is made by double screw extruder melt blending, extrusion and is changed
Property polylactic acid master batch, and be dried in vacuo；
（3）Polydactyl acid functional agglomerate is sliced 30 parts and is dried in vacuo common 80 parts of polylactic acid slice and puts into high speed
It is uniformly mixed in mixing machine, mixture obtains modified polylactic acid fiber on melt spinning machine through round spinneret orifice spinning；
The spinning temperature is 211 DEG C, and winding speed is 1790 m/min；Drawing temperature is 81 DEG C, drafting multiple 3.1
Times；
（4）Microorganism is modified：
By lactobacillus lactis, Lactococcus lactis according to quantity ratio be 1:1.2 are configured to composite bacteria agent；
After modified polylactic acid fiber obtained water spray wetting, composite bacteria liquid is uniformly sprayed, fermentation 20 is small at 38 DEG C of constant temperature
When, be brought rapidly up to 45 DEG C holding 2s, then restore 38 DEG C continue ferment 110min.
（5）Drying：89 DEG C drying fibrous, can achieve the purpose that inactivation and drying simultaneously.
Modified polylactic acid fiber spinnability obtained is splendid, is significantly better than common acid fiber by polylactic.
Embodiment 4：
A kind of biological modified method of the acid fiber of good spinnability, its step are as follows：
（1）It is equipped with raw material by following parts by weight, is then added in high-speed mixer and is uniformly dispersed to obtain polydactyl acid
Mixed raw material：
74 parts of PLA polylactic acid；
2 parts of hydroxypropul starch；
3 parts of cellulose diacetate；
1.2 parts of mica powder；
（2）Mixed uniformly polydactyl acid mixed raw material is made by double screw extruder melt blending, extrusion and is changed
Property polylactic acid master batch, and be dried in vacuo；
（3）Polydactyl acid functional agglomerate is sliced 30 parts and is dried in vacuo common 80 parts of polylactic acid slice and puts into high speed
It is uniformly mixed in mixing machine, mixture obtains modified polylactic acid fiber on melt spinning machine through round spinneret orifice spinning；
The spinning temperature is 213 DEG C, and winding speed is 1799 m/min；Drawing temperature is 80 DEG C, drafting multiple 2.9
Times；
（4）Microorganism is modified：
By lactobacillus lactis, Lactococcus lactis according to quantity ratio be 1:1.2 are configured to composite bacteria agent；
After modified polylactic acid fiber obtained water spray wetting, composite bacteria liquid is uniformly sprayed, fermentation 20 is small at 38 DEG C of constant temperature
When, be brought rapidly up to 45 DEG C holding 2s, then restore 38 DEG C continue ferment 115min.
（5）Drying：83 DEG C drying fibrous, can achieve the purpose that inactivation and drying simultaneously.
Modified polylactic acid fiber spinnability obtained is splendid, is significantly better than common acid fiber by polylactic.
Embodiment 5：
Comparative example：It is heat-treated without moment
A kind of biological modified method of the acid fiber of good spinnability, its step are as follows：
（1）It is equipped with raw material by following parts by weight, is then added in high-speed mixer and is uniformly dispersed to obtain polydactyl acid
Mixed raw material：
72 parts of PLA polylactic acid；
3 parts of hydroxypropul starch；
2 parts of cellulose diacetate；
1.4 parts of mica powder；
（2）Mixed uniformly polydactyl acid mixed raw material is made by double screw extruder melt blending, extrusion and is changed
Property polylactic acid master batch, and be dried in vacuo；
（3）Polydactyl acid functional agglomerate is sliced 30 parts and is dried in vacuo common 80 parts of polylactic acid slice and puts into high speed
It is uniformly mixed in mixing machine, mixture obtains modified polylactic acid fiber on melt spinning machine through round spinneret orifice spinning；
The spinning temperature is 212 DEG C, and winding speed is 1703 m/min；Drawing temperature is 82 DEG C, drafting multiple 3.0
Times；
（4）Microorganism is modified：
By lactobacillus lactis, Lactococcus lactis according to quantity ratio be 1:1.2 are configured to composite bacteria agent；
After modified polylactic acid fiber obtained water spray wetting, composite bacteria liquid is uniformly sprayed, fermentation 22 is small at 38 DEG C of constant temperature
When.
（5）Drying：87 DEG C drying fibrous, can achieve the purpose that inactivation and drying simultaneously.
Embodiment 5：Effect is tested and assessed
The modified polylactic acid fiber that embodiment 1-5 is prepared is soft, further carries out the test of performance, as a result
As shown in table 1：
Table 1
| Fracture strength（cN/dTex） | Vicat softening point（Degree Celsius） | Regain W（%） | Dye-uptake（%） | Washing fastness（AATCC is tested） | |
| Embodiment 1 | 4.9 | 132 | 6.0 | 89 | 5 |
| Embodiment 2 | 4.6 | 140 | 5.6 | 87 | 5 |
| Embodiment 3 | 4.8 | 133 | 5.1 | 86 | 5 |
| Embodiment 4 | 4.5 | 136 | 5.9 | 88 | 4 |
| Embodiment 5（Contrast test） | 3.1 | 128 | 3.5 | 72 | 3 |
It can be seen that modified polylactic acid fiber multinomial performance produced by the present invention is outstanding, good spinnability.Pass through contrast test
As can be seen that in the modified technique that ferments, moment heat treatment plays prodigious promotion synergistic effect.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (2)
1. a kind of biological modified method of the acid fiber of good spinnability, its step are as follows：
（1）It is equipped with raw material by following parts by weight, is then added in high-speed mixer and is uniformly dispersed to obtain polydactyl acid mixing
Raw material：
72-75 parts of PLA polylactic acid；
2-3 parts of hydroxypropul starch；
2-3 parts of cellulose diacetate；
1.1-1.6 parts of mica powder；
（2）Mixed uniformly polydactyl acid mixed raw material is made modified poly- by double screw extruder melt blending, extrusion
Lactic acid master batch, and be dried in vacuo；
（3）Polydactyl acid functional agglomerate is sliced 30 parts and is dried in vacuo common 80 parts of polylactic acid slice and puts into mixed at high speed
It is uniformly mixed in machine, mixture obtains modified polylactic acid fiber on melt spinning machine through round spinneret orifice spinning；
（4）Microorganism is modified：
By lactobacillus lactis, Lactococcus lactis according to quantity ratio be 1:1.2 are configured to composite bacteria agent；
After modified polylactic acid fiber obtained water spray wetting, composite bacteria liquid is uniformly sprayed, is fermented at 38 DEG C of constant temperature 20 hours
When, it is brought rapidly up to 45 DEG C of holding 2s, then restores 38 DEG C and continue the 100-120min that ferments；
（5）Drying：80-90 DEG C drying fibrous, can achieve the purpose that inactivation and drying simultaneously；
The step（3）The spinning temperature is 210-215 DEG C, and winding speed is 1700-1800 m/min；Drawing temperature is
80-82 DEG C, drafting multiple is 2.8-3.2 times.
2. the modified polylactic acid fiber fabric that method of modifying described in claim 1 is prepared.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510730741.XA CN105256401B (en) | 2015-11-02 | 2015-11-02 | A kind of bio-modification technique of the acid fiber of good spinnability |
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