CN107299414A - The preparation method and product of HMW dextrorotation PLA low molecule amount PLLA blended fiber - Google Patents
The preparation method and product of HMW dextrorotation PLA low molecule amount PLLA blended fiber Download PDFInfo
- Publication number
- CN107299414A CN107299414A CN201710543063.5A CN201710543063A CN107299414A CN 107299414 A CN107299414 A CN 107299414A CN 201710543063 A CN201710543063 A CN 201710543063A CN 107299414 A CN107299414 A CN 107299414A
- Authority
- CN
- China
- Prior art keywords
- hmw
- low molecule
- molecule amount
- preparation
- dextrorotation pla
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
Abstract
The present invention relates to a kind of preparation method of HMW dextrorotation PLA low molecule amount PLLA blended fiber, comprise the following steps：1) HMW dextrorotation PLA and low molecule amount PLLA are passed through into melting mixing, extruding pelletization obtains blend；The mass fraction of HMW dextrorotation PLA is 5~50% in the blend, and the mass fraction of the low molecule amount PLLA is 50~95%；2) blend is subjected to melt spinning, produces HMW dextrorotation PLA low molecule amount PLLA blended fiber.The invention further relates to the product that above-mentioned preparation method is prepared.The preparation method process is simple, and production technology is controllable.Prepared polylactic acid blend fiber has abundant shish kebab superlattice structures, and its crystallinity is 40~60%, and heated dry air shrinkage factor is 3.0~6.0%, and boiling water shrinkage is 0.3~2.0%.
Description
Technical field
The present invention relates to the preparation field of acid fiber by polylactic, and in particular to a kind of HMW dextrorotation PLA-low molecule
Measure the preparation method and product of PLLA blended fiber.
Background technology
PLA (Poly Lactic Acid, PLA) is by the various reproducible natural moneys such as starch, cellulose, polysaccharide
Source by hydrolysis, fermentation be made lactic acid, aggregated obtained new polyester material, be it is a kind of can be degradable it is environmentally friendly
Resin.
PLA has excellent biocompatibility, good mechanical performance and physical property so that it is in packaging, biology
The fields such as medical treatment, automotive electronics have a wide range of applications, and also have potential application value in chemical fibre and non-woven field.
But at this stage, because the crystallization of PLA is slow, even in spinning process under strongly tensile flow field active force, according to
So it is difficult to the PLA fibers for obtaining high-crystallinity (55-60%).And heat endurance poor caused by low-crystallinity (20-30%)
Have a strong impact on its performance.
Acid fiber by polylactic is solved to be to improve its heat endurance using the key issue of limitation.Generally solve its heat endurance
Mode can be by improving its crystallinity, such as Chinese invention patent (A of CN 106366594) is open a kind of three-dimensional containing PLA
The preparation method of the high-toughness polylactic acid blend of compound, this method by nucleator of the dextrorotation PLA of high-optical-purity and
PLLA is mixed at room temperature, obtains the high-toughness polylactic acid blend of the stereo complex containing PLA.This method is logical
Cross raising crystallinity to improve its heat resistance, compared to its heat resistance is improved by crystallinity, the change of crystal habit is to resistance to
Hot improvement is more effective.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of HMW dextrorotation PLA-low molecule
The preparation method and product of PLLA blended fiber are measured, it is super brilliant that this method can improve shish-kebab in blended fiber
The content of lattice structure, and the heated dry air shrinkage factor and boiling water shrinkage of blended fiber can be greatly lowered, acquisition can be extensive
The high heat-resisting blended fiber of application.
Technical scheme provided by the present invention is：
A kind of preparation method of HMW dextrorotation PLA-low molecule amount PLLA blended fiber, including it is as follows
Step：
1) HMW dextrorotation PLA and low molecule amount PLLA are passed through into melting mixing, extruding pelletization is obtained
Blend；The mass fraction of HMW dextrorotation PLA is 5~50%, the left-handed poly- breast of low molecule amount in the blend
The mass fraction of acid is 50~95%；
2) blend is subjected to melt spinning, produces HMW dextrorotation PLA-low molecule amount PLLA blending
Fiber.
In above-mentioned technical proposal, it is blended by HMW dextrorotation PLA and low molecule amount PLLA, and through molten
Melt spinning and obtain blended fiber.On the one hand, HMW dextrorotation PLA (HPDLA) long-chain mutually tangles in blend, such as Fig. 1
It is shown in spinning process, the long-chain entanglement network of overlapped entanglement under outer field action, carry network internal low molecule amount
The deformation of PLLA (hereinafter referred to as LPLLA) short chain, orientation, effectively the presoma of inductive formation shish nucleus, is flowing
Key effect is played in field induction nucleation.
On the other hand, HPDLA is that structure body, HPDLA and LPLLA enantiomers spiral point are found in two kinds of different mappings from LPLLA
There is special CH between subchain3With O=C interaction of hydrogen bond, and this interaction of hydrogen bond can drive Stereocomplex
The generation of crystal, one pack system crystal of the fusing point compared with PDLA or PLLA is high about 50 DEG C.Flow under field action, HPDLA entanglement network
LPLLA can be swept along to be orientated, then be expected to increase the possibility of LPLLA and HPDLA segments contact, reinforcing LPLLA short chains and HPDLA
The interaction of hydrogen bond of long-chain.
By the synergy of above two mechanism, promote the shish-kebab enriched in LPLLA super brilliant using HPDLA
The generation of lattice structure, so as to obtain the polylactic acid blend fiber that heat endurance is significantly improved.
It is preferred that, the step 1) in melting mixing raw material is used as using masterbatch and low molecule amount PLLA.
It is preferred that, the preparation of the masterbatch：HMW dextrorotation PLA and low molecule amount PLLA are dissolved in
Dichloromethane, and pour into ethanol, obtain masterbatch after obtaining sediment, drying.
It is preferred that, the mass ratio of HMW dextrorotation PLA and low molecule amount PLLA is 1 in the masterbatch:
0.9~1.1.More preferably 1:1.
It is preferred that, the step 1) in melting mixing temperature be 220~250 DEG C.More preferably 240 DEG C.
It is preferred that, the step 2) in the condition of melt spinning be：240~265 DEG C of spinning temperature, winding speed 100~
500m/min, 100~180 DEG C of hot gas spring temperature, draw ratio 1~5.
It is preferred that, the weight average molecular weight of the HMW dextrorotation PLA is 5~19 × 105G/mol, low molecule amount is left
The weight average molecular weight for revolving PLA is 1.5~3 × 105g/mol。
The present invention also provides HMW dextrorotation PLA-low molecule amount that a kind of preparation method described above is prepared
PLLA blended fiber.The blended fiber has an abundant shish-kebab superlattice structures, and its crystallinity is 40~
60%, heated dry air shrinkage factor is 3.0~6.0%, and boiling water shrinkage is 0.3~2.0%.
Compared with the existing technology, beneficial effects of the present invention are embodied in：
(1) preparation method process provided by the present invention is simple, and production technology is controllable.
(2) polylactic acid blend fiber fully biodegradable provided by the present invention, thus the fiber cannot be only used for work
Journey field, it may also be used for medicine and hygiene fieldses.
(3) HPDLA long-chains mutually tangle in polylactic acid blend fiber provided by the present invention, under outer field action, mutually
The long-chain entanglement network of overlapping entanglement carry the LPLLA short chains deformation of network internal, orientation, and HPDLA and LPLLA strands it
Between there is strong interaction of hydrogen bond, not only contribute to promote shish generation, and may advantageously facilitate what is generated
Shish stability, and stable shish further triggers the short chain of surrounding unperturbed state to crystallize generation kebab, ultimately forms
Shish-kebab superlattice structures, obtain polylactic acid blend fiber that heat endurance is significantly improved, and its crystallinity is 40~
60%, heated dry air shrinkage factor is 3.0~6.0%, and boiling water shrinkage is 0.3~2.0%.
Brief description of the drawings
Fig. 1 is the schematic flow sheet that blended fiber forms shish-kebab superlattice structures in spinning process.
Embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1
It is 5 × 10 to take weight average molecular weight5G/mol HPDLA is 1.5 × 10 with weight average molecular weight5G/mol LPLLA conducts
Raw material.
10gHPDLA and 10gLPLLA are dissolved in magnetic agitation 3h under 150ml dichloromethane, normal temperature condition, will be mixed molten
Liquid is poured into 50ml absolute ethyl alcohols while stirring, and it is 1 to obtain HPDLA/LPLLA mass ratioes:1 sediment, in vacuum drying oven
In be dried to obtain masterbatch.
By masterbatch above-mentioned 10g and 40g LPLLA, melting extrusion is granulated under the conditions of miniature extruder, 240 DEG C, is obtained
HPDLA/LPLLA blends；
By the blend in 240 DEG C of spinning temperature, speed 100m/min is wound, 100 DEG C of hot gas spring temperature, draw ratio is 2
Melt spinning under conditions of times, is made PLA blended fibers.
Specific method of testing：1) hot air shrinkage of PLA blended fibers is tested using single fiber thermal contraction test instrument, is surveyed
Examination temperature is set as 140 DEG C, testing time 30min.2) boiling shrinkage of PLA blended fibers is tested under standard atmospheric conditions
Rate, testing time 30min.
Percent thermal shrinkage is calculated by below equation：
In formula, L0For the initial length of fiber, L is the final lengths of the fiber after overheat contraction.
It is 5.5% that the PLA blended fibers measure its hot air shrinkage through single fiber thermal contraction test instrument；In normal atmosphere
Under the conditions of measure its boiling water shrinkage for 1.6%, its crystallinity is 42%, and Herman orientation index is 0.18.
Embodiment 2
It is 10 × 10 to take weight average molecular weight5G/mol HPDLA is 1.5 × 10 with weight average molecular weight5G/mol LPLLA makees
For raw material.
10gHPDLA and 10gLPLLA are dissolved in magnetic agitation 3h under 150ml dichloromethane, normal temperature condition, will be mixed molten
Liquid is poured into 50ml absolute ethyl alcohols while stirring, and it is 1 to obtain HPDLA/LPLLA mass ratioes:1 sediment, in vacuum drying oven
In be dried to obtain masterbatch.
By masterbatch above-mentioned 10g and 40g LPLLA, melting extrusion is granulated under the conditions of miniature extruder, 240 DEG C, is obtained
HPDLA/LPLLA blends；
By the blend in 250 DEG C of spinning temperature, speed 120m/min, 120 DEG C of hot gas spring temperature are wound, draw ratio is
Melt spinning under conditions of 2.5 times, is made PLA blended fibers.
The method of testing of hot air shrinkage and boiling water shrinkage such as embodiment 1 is identical.
It is 4.6% that the PLA blended fibers measure its hot air shrinkage through single fiber thermal contraction test instrument；In normal atmosphere
Under the conditions of measure its boiling water shrinkage for 1.3%, its crystallinity is 45%, and Herman orientation index is 0.20.
Embodiment 3
It is 10 × 10 to take weight average molecular weight5G/mol HPDLA is 1.5 × 10 with weight average molecular weight5G/mol LPLLA makees
For raw material.
10gHPDLA and 10gLPLLA are dissolved in magnetic agitation 3h under 150ml dichloromethane, normal temperature condition, will be mixed molten
Liquid is poured into 50ml absolute ethyl alcohols while stirring, and it is 1 to obtain HPDLA/LPLLA mass ratioes:1 sediment, in vacuum drying oven
In be dried to obtain masterbatch.
By masterbatch above-mentioned 10g and 40g LPLLA, melting extrusion is granulated under the conditions of miniature extruder, 220 DEG C, is obtained
HPDLA/LPLLA blends；
By the blend in 255 DEG C of spinning temperature, speed 200m/min, 120 DEG C of hot gas spring temperature are wound, draw ratio is
Melt spinning under conditions of 3.5 times, is made PLA blended fibers.
The method of testing of hot air shrinkage and boiling water shrinkage such as embodiment 1 is identical.
It is 3.9% that the PLA blended fibers measure its hot air shrinkage through single fiber thermal contraction test instrument；In normal atmosphere
Under the conditions of measure its boiling water shrinkage for 1.0%, its crystallinity is 48%, and Herman orientation index is 0.22.
Embodiment 4
It is 17 × 10 to take weight average molecular weight5G/mol HPDLA is 2.5 × 10 with weight average molecular weight5G/mol LPLLA makees
For raw material.
10gHPDLA and 10gLPLLA are dissolved in magnetic agitation 3h under 150ml dichloromethane, normal temperature condition, will be mixed molten
Liquid is poured into 50ml absolute ethyl alcohols while stirring, and it is 1 to obtain HPDLA/LPLLA mass ratioes:1 sediment, in vacuum drying oven
In be dried to obtain masterbatch.
By masterbatch above-mentioned 10g and 40g LPLLA, melting extrusion is granulated under the conditions of miniature extruder, 220 DEG C, is obtained
HPDLA/LPLLA blends；
By the blend in 255 DEG C of spinning temperature, speed 300m/min, 130 DEG C of hot gas spring temperature are wound, draw ratio is
Melt spinning under conditions of 3.5 times, is made PLA blended fibers.
The method of testing of hot air shrinkage and boiling water shrinkage such as embodiment 1 is identical.
It is 3.5% that the PLA blended fibers measure its hot air shrinkage through single fiber thermal contraction test instrument；In normal atmosphere
Under the conditions of measure its boiling water shrinkage for 0.8%, its crystallinity is 51%, and Herman orientation index is 0.23.
Embodiment 5
It is 19 × 10 to take weight average molecular weight5G/mol HPDLA is 3 × 10 with weight average molecular weight5G/mol LPLLA conducts
Raw material.
10gHPDLA and 10gLPLLA are dissolved in magnetic agitation 3h under 150ml dichloromethane, normal temperature condition, will be mixed molten
Liquid is poured into 50ml absolute ethyl alcohols while stirring, and it is 1 to obtain HPDLA/LPLLA mass ratioes:1 sediment, in vacuum drying oven
In be dried to obtain masterbatch.
By masterbatch above-mentioned 15g and 35g LPLLA, melting extrusion is granulated under the conditions of miniature extruder, 240 DEG C, is obtained
HPDLA/LPLLA blends；
By the blend in 260 DEG C of spinning temperature, speed 500m/min is wound, 150 DEG C of hot gas spring temperature, draw ratio is 5
Melt spinning under conditions of times, is made PLA blended fibers.
The method of testing of hot air shrinkage and boiling water shrinkage such as embodiment 1 is identical.
It is 3.2% that the PLA blended fibers measure its hot air shrinkage through single fiber thermal contraction test instrument；In normal atmosphere
Under the conditions of measure its boiling water shrinkage for 0.5%, its crystallinity is 53%, and Herman orientation index is 0.28.
Embodiment 6
It is 10 × 10 to take weight average molecular weight5G/mol HPDLA is 2 × 10 with weight average molecular weight5G/mol LPLLA conducts
Raw material.
10gHPDLA and 10gLPLLA are dissolved in magnetic agitation 3h under 150ml dichloromethane, normal temperature condition, will be mixed molten
Liquid is poured into 50ml absolute ethyl alcohols while stirring, and it is 1 to obtain HPDLA/LPLLA mass ratioes:1 sediment, in vacuum drying oven
In be dried to obtain masterbatch.
By masterbatch above-mentioned 15g and 35g LPLLA, melting extrusion is granulated under the conditions of miniature extruder, 200 DEG C, is obtained
HPDLA/LPLLA blends；
By the blend in 230 DEG C of spinning temperature, speed 500m/min is wound, 150 DEG C of hot gas spring temperature, draw ratio is 5
Melt spinning under conditions of times, is made PLA blended fibers.
The method of testing of hot air shrinkage and boiling water shrinkage such as embodiment 1 is identical.
It is 3.0% that the PLA blended fibers measure its hot air shrinkage through single fiber thermal contraction test instrument；In normal atmosphere
Under the conditions of measure its boiling water shrinkage for 0.3%, its crystallinity is 57%, and Herman orientation index is 0.30.
Comparative example 1
It is 2 × 10 by weight average molecular weight5G/mol LPLLA raw materials 50g is melted under the conditions of 240 DEG C by miniature extruder
Extruding pelletization, obtains LPLLA pellets；
By the pellet in 240 DEG C of spinning temperature, speed 100m/min is wound, 100 DEG C of hot gas spring temperature, draw ratio is 2.5
PLA fibers are made in melt spinning under conditions of times.
The method of testing of hot air shrinkage and boiling water shrinkage such as embodiment 1 is identical.
It is 20% that the PLA fibers measure its hot air shrinkage through single fiber thermal contraction test instrument；In standard atmosphere condition
Under measure its boiling water shrinkage for 7.8%, its crystallinity is 27%, and Herman orientation index is 0.12.
Comparative example 2
It is 2 × 10 by weight average molecular weight5G/mol LPLLA raw materials 50g is melted under the conditions of 240 DEG C by miniature extruder
Extruding pelletization, obtains LPLLA pellets；
By the pellet in 250 DEG C of spinning temperature, speed 300m/min is wound, 120 DEG C of hot gas spring temperature, draw ratio is 4.5
PLA fibers are made in melt spinning under conditions of times.
The method of testing of hot air shrinkage and boiling water shrinkage such as embodiment 1 is identical.
It is 12% that the PLA fibers measure its hot air shrinkage through single fiber thermal contraction test instrument；In standard atmosphere condition
Under measure its boiling water shrinkage for 4.5%, its crystallinity is 30%, and Herman orientation index is 0.14.
Comparative example 3
It is 15 × 10 by weight average molecular weight5G/mol LPLLA raw materials 50g is melted under the conditions of 200 DEG C by miniature extruder
Melt extruding pelletization, obtain LPLLA pellets；
By the pellet in 260 DEG C of spinning temperature, speed 300m/min is wound, 130 DEG C of hot gas spring temperature, draw ratio is 4.5
PLA fibers are made in melt spinning under conditions of times.
The method of testing of hot air shrinkage and boiling water shrinkage such as embodiment 1 is identical.
It is 23% that the PLA fibers measure its hot air shrinkage through single fiber thermal contraction test instrument；In standard atmosphere condition
Under measure its boiling water shrinkage for 8.5%, its crystallinity is 34%, and Herman orientation index is 0.15.
Claims (8)
1. a kind of preparation method of HMW dextrorotation PLA-low molecule amount PLLA blended fiber, it is characterised in that
Comprise the following steps：
1) HMW dextrorotation PLA and low molecule amount PLLA are passed through into melting mixing, extruding pelletization is blended
Thing；The mass fraction of HMW dextrorotation PLA is 5~50% in the blend, the low molecule amount PLLA
Mass fraction is 50~95%；
2) blend is subjected to melt spinning, produces HMW dextrorotation PLA-low molecule amount PLLA blended fiber.
2. the preparation of HMW dextrorotation PLA according to claim 1-low molecule amount PLLA blended fiber
Method, it is characterised in that the step 1) in melting mixing raw material is used as using masterbatch and low molecule amount PLLA.
3. the preparation of HMW dextrorotation PLA according to claim 2-low molecule amount PLLA blended fiber
Method, it is characterised in that the preparation of the masterbatch：HMW dextrorotation PLA and low molecule amount PLLA are dissolved in
Dichloromethane, and pour into ethanol, obtain masterbatch after obtaining sediment, drying.
4. the preparation of HMW dextrorotation PLA according to claim 3-low molecule amount PLLA blended fiber
Method, it is characterised in that the mass ratio of HMW dextrorotation PLA and low molecule amount PLLA is 1 in the masterbatch:
0.9~1.1.
5. the preparation of HMW dextrorotation PLA according to claim 1-low molecule amount PLLA blended fiber
Method, it is characterised in that the step 1) in melting mixing temperature be 220~250 DEG C.
6. the preparation of HMW dextrorotation PLA according to claim 1-low molecule amount PLLA blended fiber
Method, it is characterised in that the step 2) in the condition of melt spinning be：240~265 DEG C of spinning temperature, winding speed 100~
500m/min, 100~180 DEG C of hot gas spring temperature, draw ratio 1~5.
7. the preparation of HMW dextrorotation PLA according to claim 1-low molecule amount PLLA blended fiber
Method, it is characterised in that the weight average molecular weight of the HMW dextrorotation PLA is 5~19 × 105G/mol, low molecule amount
The weight average molecular weight of PLLA is 1.5~3 × 105g/mol。
8. HMW dextrorotation PLA-low molecule that a kind of preparation method as described in claim 1~7 is any is prepared
Measure PLLA blended fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543063.5A CN107299414B (en) | 2017-07-05 | 2017-07-05 | High molecular weight dextrorotation polylactic acid-low molecular weight l-lactic acid blended fiber preparation method and product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543063.5A CN107299414B (en) | 2017-07-05 | 2017-07-05 | High molecular weight dextrorotation polylactic acid-low molecular weight l-lactic acid blended fiber preparation method and product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107299414A true CN107299414A (en) | 2017-10-27 |
| CN107299414B CN107299414B (en) | 2019-11-29 |
Family
ID=60135330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710543063.5A Active CN107299414B (en) | 2017-07-05 | 2017-07-05 | High molecular weight dextrorotation polylactic acid-low molecular weight l-lactic acid blended fiber preparation method and product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107299414B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108129813A (en) * | 2018-01-12 | 2018-06-08 | 浙江海正生物材料股份有限公司 | A kind of polylactic acid resin composition for injected molded polymeric material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08245775A (en) * | 1995-03-08 | 1996-09-24 | Shimadzu Corp | Polylactic acid copolymer and its molding |
| CN102409432A (en) * | 2010-09-19 | 2012-04-11 | 东丽纤维研究所（中国）有限公司 | High heat resistance polylactic acid fiber and preparation method thereof |
| CN102634866A (en) * | 2012-04-25 | 2012-08-15 | 中国科学院宁波材料技术与工程研究所 | Self-enhanced polylactic acid fiber and preparation method thereof |
| CN103088458A (en) * | 2013-01-27 | 2013-05-08 | 彭荣淮 | Pure polylactic acid tows as well as preparation method and cigarette filter trip thereof |
| KR20130112464A (en) * | 2012-04-04 | 2013-10-14 | 현대자동차주식회사 | Sheath-core all-in-one poly lactic acid fiber and a fabrication process thereof |
| CN103451764A (en) * | 2013-08-15 | 2013-12-18 | 苏州龙杰特种纤维股份有限公司 | Heat-resistant polylactic acid fiber and product thereof |
-
2017
- 2017-07-05 CN CN201710543063.5A patent/CN107299414B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08245775A (en) * | 1995-03-08 | 1996-09-24 | Shimadzu Corp | Polylactic acid copolymer and its molding |
| CN102409432A (en) * | 2010-09-19 | 2012-04-11 | 东丽纤维研究所（中国）有限公司 | High heat resistance polylactic acid fiber and preparation method thereof |
| KR20130112464A (en) * | 2012-04-04 | 2013-10-14 | 현대자동차주식회사 | Sheath-core all-in-one poly lactic acid fiber and a fabrication process thereof |
| CN102634866A (en) * | 2012-04-25 | 2012-08-15 | 中国科学院宁波材料技术与工程研究所 | Self-enhanced polylactic acid fiber and preparation method thereof |
| CN103088458A (en) * | 2013-01-27 | 2013-05-08 | 彭荣淮 | Pure polylactic acid tows as well as preparation method and cigarette filter trip thereof |
| CN103451764A (en) * | 2013-08-15 | 2013-12-18 | 苏州龙杰特种纤维股份有限公司 | Heat-resistant polylactic acid fiber and product thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108129813A (en) * | 2018-01-12 | 2018-06-08 | 浙江海正生物材料股份有限公司 | A kind of polylactic acid resin composition for injected molded polymeric material |
| CN108129813B (en) * | 2018-01-12 | 2020-02-14 | 浙江海正生物材料股份有限公司 | Polylactic resin composition for injection molding material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107299414B (en) | 2019-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | Preparation of polylactic acid/TEMPO-oxidized bacterial cellulose nanocomposites for 3D printing via Pickering emulsion approach | |
| Huan et al. | Manufacture of electrospun all-aqueous poly (vinyl alcohol)/cellulose nanocrystal composite nanofibrous mats with enhanced properties through controlling fibers arrangement and microstructure | |
| CA3005917C (en) | Modified fiber and preparation method therefor | |
| Sheng et al. | High-toughness PLA/Bamboo cellulose nanowhiskers bionanocomposite strengthened with silylated ultrafine bamboo-char | |
| Song et al. | Mechanical properties of poly (lactic acid)/hemp fiber composites prepared with a novel method | |
| CN102532837B (en) | Preparation method for high molecular weight polylactic acid steric composite | |
| CN101805937B (en) | Filament bundle for degrading cigarette, preparation method thereof, and preparation method of filter stick | |
| Erdem et al. | Flame retardancy behaviors and structural properties of polypropylene/nano‐SiO2 composite textile filaments | |
| CN105506776B (en) | A kind of modified polylactic acid fiber and preparation method thereof | |
| Aouat et al. | Morphological, mechanical, and thermal characterization of poly (lactic acid)/cellulose multifilament fibers prepared by melt spinning | |
| Butola et al. | Hybrid organic-inorganic POSS (polyhedral oligomeric silsesquioxane)/polypropylene nanocomposite filaments | |
| CN105063796A (en) | High-molecular composite conductive fiber and preparation method thereof | |
| Zhao et al. | Biosynthetic protein and nanocellulose composite fibers with extraordinary mechanical performance | |
| Cayla et al. | Melt spun multifilament yarns of carbon nanotubes-based polymeric blends: Electrical, mechanical and thermal properties | |
| CN105177751A (en) | Colored anti-ultraviolet profiled fine denier polyester filament and preparation method thereof | |
| WO2015029316A1 (en) | Polyester fiber | |
| CN107366038B (en) | It is crosslinked dextrorotation polylactic acid/l-lactic acid blended fiber preparation method and product | |
| CN107299414B (en) | High molecular weight dextrorotation polylactic acid-low molecular weight l-lactic acid blended fiber preparation method and product | |
| CN105177737A (en) | Degradable cigarette filter tip filament bundle and preparation method thereof | |
| Yu et al. | Effective stress transferring interface and mechanical property enhancement of poly (L-lactide)/multi-walled carbon nanotubes fibers | |
| Richardson et al. | Study of nanoreinforced shape memory polymers processed by casting and extrusion | |
| WO2022257394A1 (en) | Biodegradable fiber and manufacturing method therefor | |
| CN106380806A (en) | Conductive polylactic acid composite material composition for hot-melt 3D printing and preparation method thereof | |
| CN106319680B (en) | A kind of manufacturing method of multifunction polyester staple fiber | |
| CN107299413A (en) | The preparation method and product of a kind of height molecular weight PLLA blended fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |