Polyvinyl alcohol-acorn starch-gulcomannan composite material and preparation method thereof

A technology of polyvinyl alcohol and glucomannan, which is applied in the field of biological materials, can solve the problem of high preparation cost of composite materials, and achieve the effects of low cost, simple preparation process, high tensile strength and bending strength

Active Publication Date: 2015-06-10
浙江维泰生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been reports on the preparation of new membrane materials by blending polyvinyl alcohol with sodium alginate and chitosan. Although the mechanical strength of the composite material has been effectively improved, the preparation cost of the composite material is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A polyvinyl alcohol-acorn starch-glucomannan composite material, comprising the following components in parts by weight: 36 parts of polyvinyl alcohol, 15 parts of acorn starch, 8 parts of glucomannan, octadecyl 2 parts of trimethylammonium bromide, 2 parts of talc, 1 part of aluminum oxide, 1 part of o-sulfonylimide and 1 part of polyethylene glycol.

[0020] The preparation method comprises the steps of:

[0021] (1) Add raw materials except polyvinyl alcohol to 500 times the volume of water, react at 60°C for 6 hours, filter, dry the solid, and set aside;

[0022] (2) Dissolve and disperse the solid obtained in step (1) in N,N-dimethylformamide, stir evenly to form a suspension, let stand, and set aside;

[0023] (3) Add polyvinyl alcohol to the suspension prepared in step (2), and keep it warm at 40°C for 8 hours to form a composite sol, which is then coated on glass by casting method, and kept at a constant temperature of 40°C in vacuum After drying for 24 hours,...

Embodiment 2

[0025] A polyvinyl alcohol-acorn starch-glucomannan composite material, comprising the following components in parts by weight: 40 parts of polyvinyl alcohol, 18 parts of acorn starch, 10 parts of glucomannan, cetyl 3 parts of trimethylammonium bromide, 3 parts of talc, 1 part of aluminum oxide, 2 parts of o-sulfonylimide and 2 parts of polyethylene glycol.

[0026] The preparation method comprises the steps of:

[0027] (1) Add raw materials except polyvinyl alcohol to 600 times the volume of water, react at 70°C for 5 hours, filter, dry the solid, and set aside;

[0028] (2) Dissolve and disperse the solid obtained in step (1) in N,N-dimethylformamide, stir evenly to form a suspension, let stand, and set aside;

[0029] (3) Add polyvinyl alcohol to the suspension prepared in step (2), and keep it warm at 45°C for 7.5h to form a composite sol, which is then coated on glass by casting method, and kept at a constant temperature of 45°C After vacuum drying for 16 hours, the po...

Embodiment 3

[0031] A polyvinyl alcohol-acorn starch-glucomannan composite material, comprising the following components in parts by weight: 42 parts of polyvinyl alcohol, 20 parts of acorn starch, 12 parts of glucomannan, octadecyl 3 parts of dimethyl benzyl ammonium bromide, 3 parts of talc, 2 parts of aluminum oxide, 2 parts of o-sulfonylimide and 2 parts of polyglycolic acid.

[0032] The preparation method comprises the steps of:

[0033] (1) Add raw materials except polyvinyl alcohol to 700 times the volume of water, react at 80°C for 3.5 hours, filter, dry the solid, and set aside;

[0034] (2) Dissolve and disperse the solid obtained in step (1) in N,N-dimethylformamide, stir evenly to form a suspension, let stand, and set aside;

[0035] (3) Add polyvinyl alcohol to the suspension prepared in step (2), and keep it warm at 50°C for 7 hours to form a composite sol, which is then coated on glass by casting method, and kept at a constant temperature of 50°C in vacuum After drying fo...

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PUM

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Abstract

The invention provides a polyvinyl alcohol-acorn starch-gulcomannan composite material and a preparation method thereof. The polyvinyl alcohol-acorn starch-gulcomannan composite material comprises, by weight, 36-48 parts of polyvinyl alcohol, 15-25 parts of acorn starch, 8-16 parts of gulcomannan, 2-5 parts of quaternary ammonium salt, 2-5 parts of talc, 1-3 parts of aluminum oxide, 1-2 parts of saccharin and 1-2 parts of plasticizer. The preparation method comprises the steps that (1) the raw materials except the polyvinyl alcohol are added into water, heating is performed for a reaction, and filtering and drying are performed for standby use; (2) obtained solid is dissolved and dispersed into N,N-dimethylformamide to form a suspension, and the suspension is placed in a standing mode for standby use; (3) the polyvinyl alcohol is added into the suspension, the suspension is kept at the temperature ranging from 40 DEG C to 60 DEG C for 6-8 h, glass is coated with a film through a tape casting method, and vacuum drying at the constant temperature is performed to obtain the polyvinyl alcohol-acorn starch-gulcomannan composite material. The obtained polyving akohol-acorn starch-gulcomannan composite material has higher tensile strength and bending strength and is lower in cost, the preparation technology is simple, and the polyvinyl alcohol-acorn starch-gulcomannan composite material is suitable for large scale production.

Description

technical field [0001] The invention relates to the field of biological materials, in particular to a polyvinyl alcohol-acorn starch-glucomannan composite material and a preparation method thereof. Background technique [0002] Polyvinyl alcohol is a non-toxic, non-irritating, hydrophilic synthetic polymer with excellent biocompatibility and biodegradability, and can form a smooth and tear-resistant film. It is a good biomedical Material. It has been reported that polyvinyl alcohol, sodium alginate, and chitosan are blended to prepare new membrane materials. Although the mechanical strength of the composite material is effectively improved, the preparation cost of the composite material is relatively high. Therefore, the blending modification of polyvinyl alcohol still needs further research. Contents of the invention [0003] Purpose of the invention: The purpose of the invention is to provide a polyvinyl alcohol-acorn starch-glucomannan composite material with good...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L3/02C08L5/02C08L5/04C08K13/02C08K3/22C08K3/34C08K5/19C08K5/435
Inventor 殷飞李永超郭玉芹
Owner 浙江维泰生物技术有限公司
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