PL439951A1 - Method of producing a biodegradable polymer composite - Google Patents
Method of producing a biodegradable polymer compositeInfo
- Publication number
- PL439951A1 PL439951A1 PL439951A PL43995121A PL439951A1 PL 439951 A1 PL439951 A1 PL 439951A1 PL 439951 A PL439951 A PL 439951A PL 43995121 A PL43995121 A PL 43995121A PL 439951 A1 PL439951 A1 PL 439951A1
- Authority
- PL
- Poland
- Prior art keywords
- sup
- pla
- poly
- mixture
- zone
- Prior art date
Links
- 229920002988 biodegradable polymer Polymers 0.000 title abstract 2
- 239000004621 biodegradable polymer Substances 0.000 title abstract 2
- 239000002131 composite material Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 229920000747 poly(lactic acid) Polymers 0.000 abstract 7
- 239000000203 mixture Substances 0.000 abstract 5
- -1 poly(lactic acid) Polymers 0.000 abstract 4
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 abstract 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 239000000391 magnesium silicate Substances 0.000 abstract 1
- 229910052919 magnesium silicate Inorganic materials 0.000 abstract 1
- 235000019792 magnesium silicate Nutrition 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/405—Intermeshing co-rotating screws
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Biological Depolymerization Polymers (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Przedmiotem zgłoszenia jest sposób wytwarzania biodegradowalnego kompozytu polimerowego na bazie poli(kwasu mlekowego) (PLA) oraz poli(adypinianu-co-tereftalanu butylenu) (PBAT) charakteryzujący się tym, że poli(kwas mlekowy) (PLA) w postaci granulek w ilości 50-70% masowych o gęstości 1240 kg/m<sup>3</sup>, masowym wskaźniku szybkości płynięcia (MFR) od 3 g/10 min. mierzonym w temperaturze 190°C pod naciskiem 2,16 kg, zawartości wilgoci (W) poniżej 0,4%, czystości stereochemicznej (zawartości L-izomerów) 96%, temperaturze topnienia 155°C i wytrzymałością na rozciąganie 45 MPa, miesza się z uprzednio zgranulowaną kompozycją polimerów poli(adypinianu-co-tereftalanu butylenu) (PBAT) i PLA w ilości 5-15% masowych o gęstości od 1370 kg/m<sup>3</sup> do 1400 kg/m<sup>3</sup>, masowym wskaźniku szybkości płynięcia (MFR) 6,75 g/10 min. mierzonym w temperaturze 135°C pod naciskiem 2,16 kg i temperaturach topnienia od 110 do 120°C oraz od 140 do 155°C, którą to mieszaninę uzupełnia się sproszkowanym talkiem w ilości 25-35% masowych, którego głównym składnikiem jest (97%) uwodniony krzemian magnezu (KWM) o mediana wielkości cząstek (D<sub>50</sub>) równą 4,5 µm, pH 9,1 i powierzchnią właściwą 6 m<sup>2</sup>/g otrzymując 100% masowych składników mieszaniny, którą miesza się mechanicznie w mieszalniku lub ręcznie, po czym tak sporządzoną mieszaninę PLA, PLA/PBAT i KWM przy pomocy wykalibrowanego dozownika wolumetrycznego wyposażonego w ślimak wprowadza się do strefy zasilania (3) wytłaczarki wieloślimakowej, korzystnie dwuślimakowej współbieżnej, w której układzie uplastyczniającym poddaje się działaniu sił ścinających w strefie sprężania (4), a następnie uplastycznioną w strefie uplastyczniania (5) i ujednorodnioną w strefie intensywnego mieszania (7) mieszaninę poprzez strefę dozowania (9) przetłacza się do głowicy wytaczarskiej formującej wyrób, który po uformowaniu w znany sposób chłodzi się i sezonuje się w temperaturze otoczenia.The subject of the application is a method of producing a biodegradable polymer composite based on poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) characterized in that poly(lactic acid) (PLA) in the form of granules in the amount of 50 -70% by mass with a density of 1240 kg/m<sup>3</sup>, a melt flow rate (MFR) from 3 g/10 min. measured at 190°C under a pressure of 2.16 kg, moisture content (W) below 0.4%, stereochemical purity (L-isomer content) 96%, melting point 155°C and tensile strength 45 MPa, mixed with previously granulated polymer composition of poly(butylene adipate-co-terephthalate) (PBAT) and PLA in the amount of 5-15% by weight with a density of 1370 kg/m<sup>3</sup> to 1400 kg/m<sup>3< /sup>, mass flow rate (MFR) 6.75 g/10 min. measured at 135°C under a pressure of 2.16 kg and melting points of 110 to 120°C and 140 to 155°C, the mixture being supplemented with talc powder in the amount of 25-35% by mass, the main component of which is (97 %) hydrated magnesium silicate (KWM) with a median particle size (D<sub>50</sub>) of 4.5 µm, pH 9.1 and a specific surface area of 6 m<sup>2</sup>/g to give 100 mass % of the components of the mixture, which is mechanically mixed in a mixer or manually, and then the mixture of PLA, PLA/PBAT and KWM prepared in this way is fed into the feed zone (3) of a multi-screw extruder, preferably a co-rotating twin screw, in whose plasticizing system is subjected to shear forces in the compression zone (4), and then plasticized in the plasticizing zone (5) and homogenized in the intensive mixing zone (7), the mixture is pumped through the dosing zone (9) to the boring head forming the product, which after formed in a known manner, cooled and seasoned at ambient temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL439951A PL244349B1 (en) | 2021-12-21 | 2021-12-21 | Method of producing a biodegradable polymer composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL439951A PL244349B1 (en) | 2021-12-21 | 2021-12-21 | Method of producing a biodegradable polymer composite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL439951A1 true PL439951A1 (en) | 2023-06-26 |
| PL244349B1 PL244349B1 (en) | 2024-01-15 |
Family
ID=86945239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL439951A PL244349B1 (en) | 2021-12-21 | 2021-12-21 | Method of producing a biodegradable polymer composite |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL244349B1 (en) |
-
2021
- 2021-12-21 PL PL439951A patent/PL244349B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL244349B1 (en) | 2024-01-15 |
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