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Tea polyphenol antibacterial degradable plastic film composite and preparation method thereof

A plastic film and composite material technology, applied in the field of degradable plastic film composite materials, can solve problems such as insufficient mechanical properties, achieve good dispersion and fluidity, good mechanical properties, and improve water resistance.

Inactive Publication Date: 2017-06-09
安徽省阜阳市国泰彩印包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are insufficient mechanical properties

Method used

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Embodiment

[0019] A kind of degradable plastic film composite material of tea polyphenol antibacterial, is made by the raw material of following parts by weight (g):

[0020] Starch 42, polyvinyl alcohol 31, urea 0.5, glycerol 3, L-proline 6, NaOH 4, nano TiO 2 7. Manganese stearate 6, kaolin 8, chitosan 6, sodium carboxymethyl cellulose 9, attapulgite 12, graphene oxide 4, polyethyleneimine 5, vinyl acetate 8, tea polyphenol 5, propane Calcium phosphate 4, ethyl p-hydroxypropionate 3, acetic acid, deionized water in proper amount.

[0021] A method for preparing a tea polyphenol antibacterial degradable plastic film composite material, characterized in that, the steps are as follows:

[0022] a. Dissolve L-proline 1:30 in deionized water, add NaOH and stir for 1 hour to obtain liquid A, and add nano-TiO 2 Disperse in deionized water at 1:20, sonicate for 1h to obtain liquid B, add liquid A dropwise to liquid B under magnetic stirring, stir at 70-80°C for 1h, heat up to 90-100°C, evapo...

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PUM

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Abstract

The invention discloses a tea polyphenol antibacterial degradable plastic film composite and a preparation technology thereof. The tea polyphenol antibacterial degradable plastic film composite is characterized by adopting starch, polyvinyl alcohol, urea, glycerin, L-proline, NaOH, nano TiO2, manganese stearate, kaolin, chitosan, sodium carboxymethylcellulose, attapulgite, graphene oxide, polyethyleneimine, vinyl acetate, tea polyphenol, calcium propionate, ethyl p-hydroxyl propyl formate and the like as raw materials. In the invention, nano TiO2 is modified by proline sodium to obtain a composite catalyst; and by adopting kaolin as a bioactivator and manganese stearate as a degradation accelerator, a biodegradable composite film is prepared. Sodium carboxymethylcellulose is added and blended with attapulgite and chitosan to obtain a composite. The starch is modified by vinyl acetate, and a biodegradable composite is prepared through grafting copolymerization; and due to the static binding force between graphene oxide and polyethyleneimine, the barrier property of the composite film is improved, and the oxygen permeability is lowered.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a tea polyphenol antibacterial degradable plastic film composite material and a preparation process thereof. Background technique [0002] In order to protect the environment and alleviate the shortage of petroleum resources, the use of petroleum-based plastic materials should be reduced, and bio-based degradable and environmentally friendly plastic materials should be developed and utilized. Biodegradable materials have excellent biocompatibility and environmental friendliness, and become The focus of research in the field of packaging materials. [0003] Cong Hongjie used starch (St) and polyvinyl alcohol (PVA) as the main raw materials in his master's degree thesis "Preparation and Thermal Decomposition Kinetics of Degradable Plastic Films", adding urea (crosslinking agent), glycerin Alcohol (plasticizer), the St / PVA completely biodegradable plastic film was prepared throug...

Claims

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Application Information

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IPC IPC(8): C08L51/02C08L29/04C08L1/28C08L5/08C08L79/02C08K13/06C08K9/04C08K3/22C08K5/098C08K3/34C08K3/04C08J5/18C08F251/00C08F218/08
CPCC08F251/00C08J5/18C08J2351/02C08J2401/28C08J2405/08C08J2429/04C08J2479/02C08K2201/011C08K2201/014C08K2201/018C08L51/02C08L2201/06C08L2201/14C08L2203/16C08L2205/035C08L29/04C08L1/286C08L5/08C08L79/02C08K13/06C08K9/04C08K2003/2241C08K5/098C08K3/346C08K3/04C08F218/08
Inventor 丁自峰
Owner 安徽省阜阳市国泰彩印包装有限公司
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