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Method used for improving water resistance and flexibility of polyacrylic acid film with poly(trimethylene carbonate) and polycaprolactone

A technology of polytrimethylene carbonate and polyacrylic acid film, which is applied in the field of polymer film preparation, can solve the problems of polyacrylic acid film's hydrophilic stiffness, lack of water resistance and flexibility, etc., and achieve easy grasp, water resistance and flexibility Enhanced performance and easy operation

Inactive Publication Date: 2017-07-28
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyacrylic acid is a biomaterial with good biocompatibility and biodegradability. Polyacrylic acid film can be used as artificial skin, etc., but polyacrylic acid film is too hydrophilic and stiff, and lacks good water resistance. and flexibility, which limits its application to a certain extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Preparation of polyacrylic acid-polycaprolactone graft copolymer

[0015] Add 20 g polyacrylic acid (molecular weight 82000) and 9.5 g hydroxyl-terminated polycaprolactone monolauryl ether (molecular weight 2100) into the dry reactor, add 291 ml dimethyl sulfoxide, and then add 0.062 g N,N' -Dicyclohexylcarbodiimide, under an inert atmosphere, stirred and reacted at 26°C for 2 days, terminated the reaction, obtained the target product by filtration, dialysis, and drying;

[0016] 2) Preparation of polyacrylic acid film modified by polytrimethylene carbonate and polycaprolactone

[0017] Add 10 grams of polyacrylic acid-polycaprolactone graft copolymer and 37 ml of dimethyl sulfoxide solvent in the drying reactor, and add polytrimethylene carbonate monotridecane accounting for 1% of the total weight of the modified membrane Base ether (molecular weight: 4600), stirred and mixed at 46°C for 50 minutes under an inert atmosphere, formed a film by casting method, and dri...

Embodiment 2

[0020] 1) Preparation of polyacrylic acid-polycaprolactone graft copolymer

[0021] Add 21 g of polyacrylic acid (molecular weight: 85,000) and 10.2 g of hydroxyl-terminated polycaprolactone monolauryl ether (molecular weight: 2,200) into the dry reactor, add 311 ml of dimethyl sulfoxide, and then add 0.039 g N,N' -Diisopropylcarbodiimide, stirred and reacted at 28°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 polyacrylic acid film modified by polytrimethylene carbonate and polycaprolactone

[0023] Add 10.1 grams of polyacrylic acid-polycaprolactone graft copolymer and 36.5 ml of dimethyl sulfoxide solvent in the dry reactor, and add polytrimethylene carbonate monotridecane accounting for 2% of the total weight of the modified membrane Base ether (molecular weight: 4800), stirred and mixed at 48°C for 55 minutes under an inert atmosphere, formed a film by castin...

Embodiment 3

[0026] 1) Preparation of polyacrylic acid-polycaprolactone graft copolymer

[0027] Add 22.3 g of polyacrylic acid (molecular weight: 91000) and 10.8 g of hydroxyl-terminated polycaprolactone monolauryl ether (molecular weight: 2400) into the dry reactor, add 323 ml of dimethyl sulfoxide, and then add 0.058 g 3-Ethyl-1-(3-dimethylaminopropyl) carbodiimide, under an inert atmosphere, stirred and reacted at 31°C for 2 days, terminated the reaction, and obtained the target product by filtration, dialysis, and drying;

[0028] 2) Preparation of polyacrylic acid film modified by polytrimethylene carbonate and polycaprolactone

[0029] Add 9.5 grams of polyacrylic acid-polycaprolactone graft copolymer and 35 ml of dimethyl sulfoxide solvent in the drying reactor, and add polytrimethylene carbonate monotridecane accounting for 3% of the total weight of the modified membrane Base ether (molecular weight: 5200), stirred and mixed at 51°C for 60 minutes under an inert atmosphere, forme...

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PUM

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Abstract

The invention discloses a method used for improving water resistance and flexibility of polyacrylic acid film with poly(trimethylene carbonate) and polycaprolactone. The method comprises following steps: 1, synthesis of a polyacrylic acid-polycaprolactone grafted copolymer, wherein hydroxyl-terminated polycaprolactone monododecyl ether, a solvent, a condensing agent, and polyacrylic acid are delivered into a dried reactor, an obtained mixture is stirred for 2 to 3 days of reaction, and reaction is stopped so as to obtain an object product; 2, preparation of the polyacrylic acid film modified with poly(trimethylene carbonate) and polycaprolactone, wherein the polyacrylic acid-polycaprolactone grafted copolymer, poly(trimethylene carbonate) monotridecyl ether, and the solvent are delivered into the dried reactor, stirring reaction is carried out for 50 to 60min, tape casting is adopted for film forming, and a film product is obtained via drying. The method is simple and convenient; and the water resistance and the flexibility of the obtained polyacrylic acid film are improved greatly.

Description

technical field [0001] The invention relates to a method for improving the water resistance and flexibility of polyacrylic acid films, and belongs to the technical field of polymer film preparation. Background technique [0002] Polyacrylic acid is a biomaterial with good biocompatibility and biodegradability. Polyacrylic acid film can be used as artificial skin, etc., but polyacrylic acid film is too hydrophilic and stiff, and lacks good water resistance. and flexibility, which limits its application to a certain extent. Polytrimethylene carbonate and polycaprolactone are biomaterials with excellent biocompatibility and biodegradability, good hydrophobicity and flexibility. First, the polycaprolactone segment is introduced into the polyacrylic acid segment to form a polyacrylic acid-polycaprolactone graft copolymer, and then the polytrimethylene carbonate segment is added to the polyacrylic acid-polycaprolactone graft copolymer to form The blend is used to prepare a modif...

Claims

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Application Information

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IPC IPC(8): C08L87/00C08L69/00C08J5/18C08G81/02
CPCC08L87/005C08G81/027C08G2230/00C08J5/18C08J2387/00C08J2469/00C08L2201/06C08L2203/16C08L69/00
Inventor 申红望朱国全
Owner SHANDONG UNIV OF TECH