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Method for improving water resisting property and flexibility of polyvinyl alcohol film by means of poly trimethylene carbonate and poly lactic acid-glycolic acid

A technology of polytrimethylene carbonate and polylactic acid glycolic acid, which is applied in the field of polymer film preparation, can solve the problems of polyvinyl alcohol film hydrophilic stiffness, lack of water resistance and flexibility, etc., and achieve easy grasp and water resistance And the effect of improved flexibility and easy operation

Inactive Publication Date: 2016-06-22
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyvinyl alcohol is a biomaterial with good biocompatibility and biodegradability. Polyvinyl alcohol film can be used as artificial skin, etc., but the hydrophilicity of polyvinyl alcohol film is too strong and stiff, and lacks good Water resistance and flexibility, which limits its application to some extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Preparation of polyvinyl alcohol-polytesan methyl carbonate

[0018] Add 18 grams of polyethylene alcohol (83000) and 10 grams of carboxyl carbonic carbonate single dulate (a molecular weight of 2500) at the dry reactor (83000) and 10 grams of carboxyl carboxyl seal.gram N, n ' -The two -ring self -carbon two amine, under an inert atmosphere, stir at 30 ° C for 2 days, terminate the reaction, get the target through filtering, dialysis, drying

[0019] 2) Polyvinyl-polytesan metal carbonate-polymapilic acid ethanol acid dual-closure of polymer

[0020] Add 10 grams of polyethylene alcohol-polyethyl carbonate penetration cluster and 4.6 gram carboxyl seal-end polymium ethanol (molecular metering) at a closure of polyethyl carbonate and 4.6 grams of carboxyl carboxyl., Then add 0.031 grams N, n ' -The two -ring self -carbon two amine, under an inert atmosphere, stir at 30 ° C for 2 days, terminate the reaction, get the target through filtering, dialysis, drying

[0021] 3) ...

Embodiment 2

[0025] 1) Preparation of polyvinyl alcohol-polytesan methyl carbonate

[0026] Add 18.2 grams of polyethylene glycol (88000) and 9.8 grams of carboxyl carbonic carbonate single dulate (molecular weight) with a 9.8 gram carboxyl sealing end, add 265ml second methyl -based sub -cricket, and then add 0.032gram N, n ' -Dimbly carbon amine, under an inert atmosphere, stir at 32 ° C for 3 days, terminate the reaction, get the target through filtering, dialysis, drying

[0027] 2) Polyvinyl-polytesan metal carbonate-polymapilic acid ethanol acid dual-closure of polymer

[0028] Add 10.3 grams of polyethylene alcohol-polytesan methyl carbonate closer club and 4.6 grams of carboxyl sealing ethyl ether acid single duoline (molecular weight) at a cluster of polytesan metal carbonate (2200)., Then add 0.019 grams N, n ' -Dimbly carbon amine, under an inert atmosphere, stir at 32 ° C for 3 days, terminate the reaction, get the target through filtering, dialysis, drying

[0029] 3) Preparation ...

Embodiment 3

[0033] 1) Preparation of polyvinyl alcohol-polytesan methyl carbonate

[0034] Add 18.3 grams of polyethylene glycol (93000) and 10.3 grams of carboxyl carbonic carbonate single -dulate (molecular weight) with a molecular amount (93000) and 10.3 grams of carboxyl carboxyl.Gram-1- (3-dimethyl aminopenyl) carbon amine, under an inert atmosphere, stir at 34 ℃ for 2 days, terminate the reaction, obtain the target through filtering, dialysis, drying, and dry;

[0035] 2) Polyvinylene-polytesam methyl carbonate-polymapilic acid ethanol acid dual-closure of polymer

[0036] Add 10 grams of polyethylene alcohol-polyethyl carbonate penetration cluster and 4.4 grams of carboxyl sealing end polymium ethanol (molecular weight) at a closure of closure of polyethylene carbonate and 4.4 grams of carboxyl carboxyl.Then add 0.027 grams of 3-ethyl-1- (3-dihyun ammonia propylene) carbon dizide. In an inert atmosphere, stir at 33 ° C for 4 days, terminate the reaction, and obtain the target through f...

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PUM

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Abstract

The invention discloses a method for improving the water resisting property and flexibility of a polyvinyl alcohol film by means of poly trimethylene carbonate and poly lactic acid-glycolic acid. The method comprises the following steps that firstly, carboxyl end capped poly trimethylene carbonate single lauryl ether, solvent, a condensing agent and polyvinyl alcohol are added into a reactor, and after reaction, polyvinyl alcohol-poly trimethylene carbonate grafted copolymer is obtained; secondly, the polyvinyl alcohol-poly trimethylene carbonate grafted copolymer, carboxyl end capped poly lactic acid-glycolic acid single lauryl ether, solvent and a condensing agent are added into the reactor, and after reaction, polyvinyl alcohol-poly trimethylene carbonate poly lactic acid-glycolic acid bi-grafted copolymer is obtained; thirdly, the polyvinyl alcohol-poly trimethylene carbonate poly lactic acid-glycolic acid bi-grafted copolymer, poly trimethylene carbonate single lauryl ether and solvent are added into the reactor and mixed to form the film, and the target object is obtained. The preparing technology is simple and easy to grasp, and the water resisting property and flexibility of the modified film are greatly improved.

Description

Technical field [0001] The invention involves a method of improving the water resistance and softness of polyethylene glycol membranes, which belongs to the field of polymer thin film preparation technology. Background technique [0002] Polyvinyl alcohol is a good biocompatibility and biodegradable biological material. Polyethylene glycol membrane can be used as artificial skin, etc.The water resistance and softness are limited to its application to a certain extent.Polytesam methyl carbonate and pool (D, L-lactic acid) ethanol acid (the weight ratio of lactic acid and ethanol acid is 90 / 10) is a biomass with excellent biocompatibility and biodegradable.Hydrophobicity and softness.First introduce polyethyl carbonate chain segments into polyethylene glycol chain segments to form polyethylene-polytesam methyl carbonate jackets, and then introduced polymalite ethanol to polyvinyl alcohol-polytesam methyl carbonatePolyvinyl-poly-polytecar carbonate-polystumin ethanol acid dilute pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L87/00C08L69/00C08G81/02C08J5/18
CPCC08G81/027C08J5/18C08J2387/00C08J2469/00C08L87/005C08L2203/16C08L69/00
Inventor 申红望朱国全
Owner SHANDONG UNIV OF TECH
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