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Method for improving water resistance and compliance of polyvinyl alcohol film with poly(p-dioxanone) and polycaprolactone-polyethylene glycol

A polydioxanone and polyvinyl alcohol film technology, which is applied in the field of polymer film preparation, can solve the problems of polyvinyl alcohol film being hydrophilic and rigid, lacking in water resistance and flexibility, etc., and achieves easy control and water resistance. Improved flexibility and flexibility, easy operation

Inactive Publication Date: 2016-07-13
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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Preparation of polyvinyl alcohol-polydioxanone graft copolymer

[0015] Add 19 grams of polyvinyl alcohol (molecular weight: 82,000) and 10.5 grams of carboxy-terminated polydioxanone monoundecyl ether (molecular weight: 2,400) into the dry reactor, add 285 ml of dimethyl sulfoxide, and then add 0.058 grams N,N' -Dicyclohexylcarbodiimide, stirred and reacted at 27°C for 2 days under an inert atmosphere, terminated the reaction, and obtained the target product by filtration, dialysis, and drying;

[0016] 2) Preparation of polyvinyl alcohol film modified by polydioxanone and polycaprolactone-polyethylene glycol

[0017] Add 10 grams of polyvinyl alcohol-polydioxanone graft copolymer and 37 ml of dimethyl sulfoxide solvent in the drying reactor, and add polycaprolactone-polyethylenimide accounting for 2% of the total weight of the modified membrane. Diol (molecular weight: 5100), stirred and mixed at 45°C for 55 minutes under an inert atmosphere, formed into a film b...

Embodiment 2

[0020] 1) Preparation of polyvinyl alcohol-polydioxanone graft copolymer

[0021] Add 22 grams of polyvinyl alcohol (molecular weight: 88,000) and 11.6 grams of carboxy-terminated polydioxanone monoundecyl ether (molecular weight: 2,500) into the dry reactor, add 312 ml of dimethyl sulfoxide, and then add 0.039 grams N,N' -Diisopropylcarbodiimide, stirred and reacted at 30°C for 3 days under an inert atmosphere, terminated the reaction, and obtained the target product by filtration, dialysis, and drying;

[0022] 2) Preparation of polyvinyl alcohol film modified by polydioxanone and polycaprolactone-polyethylene glycol

[0023] Add 9.9 grams of polyvinyl alcohol-polydioxanone graft copolymer and 36 ml of dimethyl sulfoxide solvent in the drying reactor, and add polycaprolactone-polyethylene oxide that accounts for 3% of the total weight of the modified membrane. Diol (molecular weight: 5300), stirred and mixed at 48°C for 58 minutes under an inert atmosphere, formed into a f...

Embodiment 3

[0026] 1) Preparation of polyvinyl alcohol-polydioxanone graft copolymer

[0027] Add 22.6 grams of polyvinyl alcohol (molecular weight: 93,000) and 12 grams of carboxy-terminated polydioxanone monoundecyl ether (molecular weight: 2,600) into the dry reactor, add 333 ml of dimethyl sulfoxide, and then add 0.061 g of 3-ethyl-1-(3-dimethylaminopropyl) carbodiimide was stirred and reacted at 33°C for 4 days under an inert atmosphere, the reaction was terminated, and the target product was obtained by filtration, dialysis and drying;

[0028] 2) Preparation of polyvinyl alcohol film modified by polydioxanone and polycaprolactone-polyethylene glycol

[0029] Add 9.5 grams of polyvinyl alcohol-polydioxanone graft copolymer and 34 ml of dimethyl sulfoxide solvent in the drying reactor, and add polycaprolactone-polyethylenimide accounting for 2% of the total weight of the modified membrane. Diol (molecular weight: 5500), stirred and mixed at 51°C for 60 minutes under an inert atmosph...

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PUM

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Abstract

The invention discloses a method for improving the water resistance and compliance of a polyvinyl alcohol film with poly(p-dioxanone) and polycaprolactone-polyethylene glycol. The method adopts the steps of: 1) synthesis of polyvinyl alcohol-poly(p-dioxanone) graft copolymer: adding carboxyl terminated poly(p-dioxanone) monoundecyl ether, a solvent, a condensing agent and polyvinyl alcohol into a drying reactor, carrying out stirring reaction at 27-33DEG C for 2-4d, then terminating the reaction, and performing filtering, dialyzing and drying to obtain a target object; and 2) preparation of the polyvinyl alcohol film modified with poly(p-dioxanone) and polycaprolactone-polyethylene glycol: adding the polyvinyl alcohol-poly(p-dioxanone) graft copolymer, polycaprolactone-polyethylene glycol and a solvent into a drying reactor, conducting mixing at 45-51DEG C for 55-60min, then performing film formation by tape casting, and carrying out drying, thus obtaining the target object of the invention. The preparation process involved in the invention is simple and is easy to master, and the obtained modified film has substantially improved water resistance and compliance.

Description

technical field [0001] The invention relates to a method for improving the water resistance and flexibility of a polyvinyl alcohol film, belonging to the technical field of polymer film preparation. Background technique [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. Polydioxanone is a biological material with excellent biocompatibility and biodegradability, good hydrophobicity and good flexibility. Polycaprolactone-polyethylene glycol is a biomaterial with excellent biocompatibility and biodegradability, polycaprolactone has good hydrophobicity and flexibility, polyethylene glycol is flexible and compatible with polyethylene Alcohol has better blendability. First, the polydioxanone segment is introduce...

Claims

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Application Information

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IPC IPC(8): C08L87/00C08J5/18C08G81/02
CPCC08L87/005C08G81/024C08G2230/00C08J5/18C08J2387/00C08J2487/00C08L2201/06C08L2203/16
Inventor 申红望朱国全
Owner SHANDONG UNIV OF TECH