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Preparation method for gelatin/PHBV (Poly(3-Polyhydroxybutyrate-3-Hydroxyvalerate)) blend film

A technology of blending film and gelatin, applied in the field of preparation of gelatin/PHBV blended film, can solve problems such as poor strength and elasticity, and achieve the effects of good mechanical properties, simple equipment and process, and good biodegradability

Inactive Publication Date: 2013-10-23
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to aim at the shortcomings of gelatin film quality brittleness, poor strength and elasticity, by blending this simple and effective method of improving material performance, gelatin is blended with PHBV which also has good biodegradability and excellent mechanical properties , to provide a preparation method of gelatin / PHBV blend film with ideal comprehensive performance. The method is simple in process, and the product has biodegradability and good mechanical properties. Packaging film or used in biomedical field

Method used

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  • Preparation method for gelatin/PHBV (Poly(3-Polyhydroxybutyrate-3-Hydroxyvalerate)) blend film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 2 g of gelatin into 50 mL of 2,2,2-trifluoroethanol, stir to dissolve it completely, and prepare a gelatin solution with a concentration (w / v) of 4%. Dissolve 2g of PHBV in 50mL of 2,2,2-trifluoroethanol to make a uniform solution with a concentration (w / v) of 4%, then mix the above-mentioned gelatin solution with the PHBV solution, add 0.02g of glycerol, and magnetically After stirring for 45 minutes, the mixed solution was cast on a polytetrafluoroethylene mold, placed in a fume hood to dry at room temperature for 4 hours, and then vacuum-dried at 30°C until the solvent was completely evaporated to obtain a gelatin / PHBV blend film.

Embodiment 2

[0016] Dissolve 2g of gelatin in 40mL of 40°C dimethyl sulfoxide, stir well to obtain a uniform gelatin solution with a concentration (w / v) of 5%; dissolve 3g of PHBV in 50mL of 40°C dimethyl sulfoxide, fully After stirring, a solution with a concentration (w / v) of 6% was obtained. Mix the above 40mL 5% gelatin solution and 50mL 6% PHBV solution, then add 0.05g of glycerol, stir at 40°C for 2h, cast the solution on a mold made of a hydrophobically treated glass plate, and dry at room temperature After 4 hours, put it into a vacuum drying oven at 30° C. and dry until the solvent is completely evaporated to obtain a gelatin / PHBV blend film.

Embodiment 3

[0018] 4 g of gelatin was weighed and dissolved in 50 mL of 2,2,2-trifluoroethanol, and stirred to completely dissolve to prepare a gelatin solution with a concentration (w / v) of 8%. Dissolve 8g of PHBV in 100mL of 2,2,2-trifluoroethanol, and make a uniform solution with a concentration (w / v) of 8% after completely dissolving, then mix the above gelatin solution and PHBV solution, and add 0.24g of ethylene glycol Alcohol, after stirring for 60 minutes, pour the mixed solution on a hydrophobically treated glass plate, put it in a fume hood and dry it at room temperature for 4 hours, then dry it in vacuum at 30°C until the solvent is completely evaporated, and then the gelatin / PHBV blend film can be obtained .

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Abstract

The invention discloses a preparation method for a gelatin / PHBV (Poly(3-Polyhydroxybutyrate-3-Hydroxyvalerate)) blend film, which belongs to the field blending of a natural high molecular material and a synthetic high molecular material. The blend film is prepared by the following steps of: mixing a geltin solution with a PHBV solution; adding a plasticizer; and uniformly stirring, and forming a film with a casting method, wherein the blend film comprises 10-70 percent by mass of the gelatin and 0.1-3 percent by mass of the plasticizer. The raw materials used in the blend film, i.e., the geltin and the PHBV are natural and synthesized degradable high molecular materials respectively which have wide sources and low prices; moreover, the preparation method of the blend film is easy and convenient to operate, and is easy to control; the performance advantages of geltin and PHBV are combined; and the product has biodegradability, is environmentally-friendly, and has contribution to environmental protection.

Description

technical field [0001] The invention relates to a preparation method of a gelatin / PHBV blend film, belonging to the field of blending of natural polymer materials and synthetic polymer materials. Background technique [0002] Gelatin is a cheap and easy-to-obtain renewable natural polymer material, which can be obtained by partial hydrolysis of collagen in animal skin, bone, tendon and ligament tissue. It has extremely excellent physical properties and good biocompatibility, and is used in food , biomedicine and other fields have a wide range of applications. Gelatin has good film-forming properties and good hydrophilicity, which can effectively prevent CO 2 and O 2 However, the gelatin film is brittle and has poor mechanical properties, which limit its wide application in the field of packaging materials. Poly(3-hydroxybutyrate-3-hydroxyvalerate) (ie, PHBV) is a synthetic polymer material with good biodegradability and biocompatibility, and products made of PHBV are bioc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L89/00C08L67/04C08K5/053
Inventor 李亚邵双喜蒋岚
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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