CN106977932A - A kind of method that MPEGPLA improves polypropylene sorrel water resistance and compliance with condensing model - Google Patents
A kind of method that MPEGPLA improves polypropylene sorrel water resistance and compliance with condensing model Download PDFInfo
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- CN106977932A CN106977932A CN201710362650.4A CN201710362650A CN106977932A CN 106977932 A CN106977932 A CN 106977932A CN 201710362650 A CN201710362650 A CN 201710362650A CN 106977932 A CN106977932 A CN 106977932A
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- polyacrylic acid
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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
- C08L87/00—Compositions of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
- C08L87/005—Block or graft polymers not provided for in groups C08L1/00 - C08L85/04
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
- C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C08G81/024—Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G
- C08G81/027—Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G containing polyester or polycarbonate sequences
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2387/00—Characterised by the use of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2473/00—Characterised by the use of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups C08J2459/00 - C08J2471/00; Derivatives of such polymers
- C08J2473/02—Polyanhydrides
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Abstract
The present invention discloses a kind of method that MPEGPLA improves polypropylene sorrel water resistance and compliance with condensing model, using following steps：1）The synthesis of polyacrylic acid MPEGPLA graft copolymers：Add hydroxy-end capped MPEGPLA, solvent, condensing agent and polyacrylic acid in dry reactor, stirring reaction 2~3 days, terminating reaction obtains object；2）MPEGPLA and the polypropylene sorrel of polyacids anhydride modification preparation：Polyacrylic acid MPEGPLA graft copolymers, condensing model and solvent are added in dry reactor, after stirring is mixed 50~60 minutes, with the tape casting film forming and drying, object of the present invention is obtained.Preparation technology of the present invention is simple, be easy to grasp, and gained Modified Membrane water resistance and compliance are greatly improved.
Description
Technical field
The present invention relates to a kind of method being improved to polypropylene sorrel water resistance and compliance, belong to thin polymer film
Preparing technical field.
Background technology
Polyacrylic acid is a kind of biomaterial with good biocompatibility and biodegradability, polypropylene sorrel
It can be used as artificial skin etc., but polypropylene sorrel hydrophily is too strong and more stiff, lacks preferable water resistance and compliance, so that
Its application is limited to a certain extent.MPEGPLA（The weight ratio of polyethylene glycol and PLA is 10/90）It is with excellent life
The biomaterial of thing compatibility and biodegradability, with good hydrophobicity and compliance.Condensing model is with excellent
The biomaterial of biocompatibility and biodegradability, with good hydrophobicity.MPEGPLA segments are first introduced into polypropylene
Sour segment formation polyacrylic acid-MPEGPLA graft copolymers, then again meet condensing model segment addition polyacrylic acid-MPEGPLA
Graft copolymer formation blend, is made modified polypropene sorrel, so as to drastically increase the water resistance of polypropylene sorrel and soft
It is pliable.
The content of the invention
It is preferable to polypropylene sorrel water resistance and submissive it is an object of the invention to provide a kind of simple to operate and effect
The method that property is improved.Its technical scheme is：
A kind of method that MPEGPLA improves polypropylene sorrel water resistance and compliance with condensing model, it is characterised in that：In Modified Membrane
The molecular weight of polyacrylic acid segment is that the molecular weight of 81000~87000, MPEGPLA segments is 2300~2500, condensing model segment
Molecular weight be 5100~6000；Its method of modifying uses following steps：
1）The synthesis of polyacrylic acid-MPEGPLA graft copolymers：Hydroxy-end capped MPEGPLA is added in dry reactor, it is molten
Under agent, condensing agent and polyacrylic acid, inert atmosphere, in 27~34 DEG C of stirring reactions 2~3 days, terminating reaction, by filtering, thoroughly
Analyse, dry, obtain object；
2）MPEGPLA and the polypropylene sorrel of polyacids anhydride modification preparation：In dry reactor add polyacrylic acid-
Under MPEGPLA graft copolymers, condensing model and solvent, inert atmosphere, after 46~51 DEG C of stirrings are mixed 50~60 minutes, with stream
Prolong method film forming and drying, obtain object.
A kind of described MPEGPLA improves the method for polypropylene sorrel water resistance and compliance, step 1 with condensing model）In,
MPEGPLA is poly- using mono methoxy polyethylene glycol（D,L）Lactic acid copolymer（The weight ratio of polyethylene glycol and PLA is 10/
90）, the mol ratio of MPEGPLA and polyacrylic acid is 15~25:1.
A kind of described MPEGPLA improves the method for polypropylene sorrel water resistance and compliance, step 1 with condensing model）In,
Condensing agent is usedN,N’- dicyclohexylcarbodiimide,N,N’- DIC or 3- ethyls -1-（3- diformazans ammonia third
Base）The mol ratio of carbodiimide, condensing agent and polyacrylic acid is 1.07~1.9:1, solvent uses dimethyl sulfoxide (DMSO), and reactant is molten
Liquid concentration is 5~15 g:100 ml.
A kind of described MPEGPLA improves the method for polypropylene sorrel water resistance and compliance, step 2 with condensing model）In,
Condensing model is using poly- [1,3- pairs（To carboxyphenoxy）Propane-SA] copolymer,（1,3- is double（To carboxyphenoxy）Propane
Mol ratio with SA is 70/30, and mass percent of the condensing model in Modified Membrane is 2~4%, and solvent is sub- using dimethyl
Sulfone, mixture solution concentration is 25~30 g:100 ml.
Compared with prior art, its advantage is the present invention：
1st, the method that a kind of described MPEGPLA and condensing model improve polypropylene sorrel water resistance and compliance, anti-using esterification
Should with blending two kinds of means, it is simple to operate, be easy to grasp；
2nd, described polyacrylic acid modified film water resistance and compliance are enhanced.
Embodiment
Embodiment 1
1）The preparation of polyacrylic acid-MPEGPLA graft copolymers
19.5 grams of polyacrylic acid are added in dry reactor（Molecular weight is 81000）With 10.4 grams of hydroxy-end capped MPEGPLA
（Molecular weight is 2300）, 292 ml dimethyl sulfoxide (DMSO)s are added, 0.061 gram is addedN,N’- dicyclohexylcarbodiimide, indifferent gas
Under atmosphere, in 27 DEG C of stirring reactions 2 days, terminating reaction by filtering, dialysis, was dried, obtains object；
2）MPEGPLA and the polypropylene sorrel of polyacids anhydride modification preparation
10 grams of polyacrylic acid-MPEGPLA graft copolymers and 37 ml dimethyl sulfoxide solvents are added in dry reactor, separately
Add the condensing model for accounting for Modified Membrane gross weight 2%（Molecular weight is 5100）, under inert atmosphere, in 46 DEG C of stirring mixing 50 minutes, use
The tape casting film forming, object is dried to obtain in 50 DEG C of vacuum drying chambers.
After tested：The surface contact angle and its elongation at break of object and water of the present invention respectively than improving before modified
12.1 ° and 9.3%.
Embodiment 2
1）The preparation of polyacrylic acid-MPEGPLA graft copolymers
21.1 grams of polyacrylic acid are added in dry reactor（Molecular weight is 85000）With 11.2 grams of hydroxy-end capped MPEGPLA
（Molecular weight is 2400）, 321 ml dimethyl sulfoxide (DMSO)s are added, 0.039 gram is addedN,N’- DIC, indifferent gas
Under atmosphere, in 30 DEG C of stirring reactions 3 days, terminating reaction by filtering, dialysis, was dried, obtains object；
2）MPEGPLA and the polypropylene sorrel of polyacids anhydride modification preparation
10 grams of polyacrylic acid-MPEGPLA graft copolymers and 36.5 ml dimethyl sulfoxide solvents are added in dry reactor,
It is another to add the condensing model for accounting for Modified Membrane gross weight 3%（Molecular weight is 5500）, under inert atmosphere, in 48 DEG C of stirring mixing 55 minutes,
The tape casting film forming is used, object is dried to obtain in 50 DEG C of vacuum drying chambers.
After tested：The surface contact angle and its elongation at break of object and water of the present invention respectively than improving before modified
12.6 ° and 9.8%.
Embodiment 3
1）The preparation of polyacrylic acid-MPEGPLA graft copolymers
20.8 grams of polyacrylic acid are added in dry reactor（Molecular weight is 87000）With 11.3 grams of hydroxy-end capped MPEGPLA
（Molecular weight is 2500）, 313 ml dimethyl sulfoxide (DMSO)s are added, 0.058 gram of 3- ethyls -1- is added（3- dimethylaminopropyls）Carbon two
Under imines, inert atmosphere, in 34 DEG C of stirring reactions 2 days, terminating reaction by filtering, dialysis, was dried, obtains object；
2）MPEGPLA and the polypropylene sorrel of polyacids anhydride modification preparation
9.5 grams of polyacrylic acid-MPEGPLA graft copolymers and 35 ml dimethyl sulfoxide solvents are added in dry reactor, separately
Add the condensing model for accounting for Modified Membrane gross weight 4%（Molecular weight is 6000）, under inert atmosphere, in 51 DEG C of stirring mixing 60 minutes, use
The tape casting film forming, object is dried to obtain in 50 DEG C of vacuum drying chambers.
After tested：The surface contact angle and its elongation at break of object and water of the present invention respectively than improving before modified
12.9 ° and 10.6%.
Claims (4)
1. a kind of method that MPEGPLA improves polypropylene sorrel water resistance and compliance with condensing model, it is characterised in that：Modified Membrane
The molecular weight of middle polyacrylic acid segment is that the molecular weight of 81000~87000, MPEGPLA segments is 2300~2500, condensing model chain
The molecular weight of section is 5100~6000；Its method of modifying uses following steps：
1）The synthesis of polyacrylic acid-MPEGPLA graft copolymers：Hydroxy-end capped MPEGPLA is added in dry reactor, it is molten
Under agent, condensing agent and polyacrylic acid, inert atmosphere, in 27~34 DEG C of stirring reactions 2~3 days, terminating reaction, by filtering, thoroughly
Analyse, dry, obtain object；
2）MPEGPLA and the polypropylene sorrel of polyacids anhydride modification preparation：In dry reactor add polyacrylic acid-
Under MPEGPLA graft copolymers, condensing model and solvent, inert atmosphere, after 46~51 DEG C of stirrings are mixed 50~60 minutes, with stream
Prolong method film forming and drying, obtain object.
2. a kind of MPEGPLA according to claim 1 improves the side of polypropylene sorrel water resistance and compliance with condensing model
Method, it is characterised in that：Step 1）In, MPEGPLA is poly- using mono methoxy polyethylene glycol（D,L）Lactic acid copolymer（Polyethylene glycol
Weight ratio with PLA is 10/90）, the mol ratio of MPEGPLA and polyacrylic acid is 15~25:1.
3. a kind of MPEGPLA according to claim 1 improves the side of polypropylene sorrel water resistance and compliance with condensing model
Method, it is characterised in that：Step 1）In, condensing agent is usedN,N’- dicyclohexylcarbodiimide,N,N’- DIC
Or 3- ethyls -1-（3- dimethylaminopropyls）The mol ratio of carbodiimide, condensing agent and polyacrylic acid is 1.07~1.9:1, solvent
Using dimethyl sulfoxide (DMSO), reactant solution concentration is 5~15 g:100 ml.
4. a kind of MPEGPLA according to claim 1 improves the side of polypropylene sorrel water resistance and compliance with condensing model
Method, it is characterised in that：Step 2）In, condensing model is using poly- [1,3- pair（To carboxyphenoxy）Propane-SA] copolymer,
（1,3- is double（To carboxyphenoxy）The mol ratio of propane and SA is 70/30, mass percent of the condensing model in Modified Membrane
For 2~4%, solvent uses dimethyl sulfoxide (DMSO), and mixture solution concentration is 25~30 g:100 ml.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542480A (en) * | 2016-03-07 | 2016-05-04 | 山东理工大学 | Method for improving water resistance and flexibility of polyvinyl alcohol film through polycaprolactone and P(CPP-SA)-polyethylene glycol |
| CN105566664A (en) * | 2016-03-16 | 2016-05-11 | 山东理工大学 | Method for improving water resistance and flexibility of polyvinyl alcohol film by using poly(trimethylene carbonate) and polyanhydride (P(CPP-SA))-polyvinylpyrrolidone |
| CN105566922A (en) * | 2016-03-07 | 2016-05-11 | 山东理工大学 | Method for improving water resistance and compliance of polyvinyl alcohol film with poly trimethylene carbonate and P (CPP-SA)-polyethylene glycol |
| CN105566663A (en) * | 2016-03-07 | 2016-05-11 | 山东理工大学 | Method for improving water resistance and compliance of polyvinyl alcohol film with poly (p-dioxanone) and P (CPP-SA)-polyethylene glycol |
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2017
- 2017-05-22 CN CN201710362650.4A patent/CN106977932A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542480A (en) * | 2016-03-07 | 2016-05-04 | 山东理工大学 | Method for improving water resistance and flexibility of polyvinyl alcohol film through polycaprolactone and P(CPP-SA)-polyethylene glycol |
| CN105566922A (en) * | 2016-03-07 | 2016-05-11 | 山东理工大学 | Method for improving water resistance and compliance of polyvinyl alcohol film with poly trimethylene carbonate and P (CPP-SA)-polyethylene glycol |
| CN105566663A (en) * | 2016-03-07 | 2016-05-11 | 山东理工大学 | Method for improving water resistance and compliance of polyvinyl alcohol film with poly (p-dioxanone) and P (CPP-SA)-polyethylene glycol |
| CN105566664A (en) * | 2016-03-16 | 2016-05-11 | 山东理工大学 | Method for improving water resistance and flexibility of polyvinyl alcohol film by using poly(trimethylene carbonate) and polyanhydride (P(CPP-SA))-polyvinylpyrrolidone |
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