Starch/cellulose/PBAT composite film and preparation method thereof

A composite film and cellulose technology, applied in the direction of grain processing, etc., can solve the problems of low strength, less filling, poor processing efficiency, etc., and achieve the effect of good processing performance, low cost, and reduced production cost

Active Publication Date: 2021-08-13
NINGBO UNIV
View PDF10 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose a starch / cellulose / PBAT composite film and its preparation method for the existing PBAT / starch composite film with less filling capacity, low strength and poor processing efficiency.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Starch/cellulose/PBAT composite film and preparation method thereof
  • Starch/cellulose/PBAT composite film and preparation method thereof
  • Starch/cellulose/PBAT composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The preparation method of the starch / cellulose / PBAT composite film of embodiment 1, comprises the following steps:

[0048] 1) Put 100 parts of starch and 2 parts of cellulose acetate into a planetary ball mill for dry ball milling. The grinding medium is zirconia balls, the temperature is 50°C, the revolution speed of the ball mill is 50 rpm, the rotation speed is 100 rpm, and the ball milling time is 40 minutes to obtain pre-dispersed starch / cellulose;

[0049] 2) The raw material PBAT is divided into two parts, wherein, the mass fraction ratio of the first part PBAT and the starch added in the step 1) is 2:100, the mass fraction ratio of the second part PBAT and the starch added in the step 1) is 48:100;

[0050] 3) Add 15 parts of plasticizer, the first part of PBAT, 1 part of stabilizer and 1 part of coupling agent to the planetary ball mill equipped with pre-dispersed starch / cellulose in step 1) for dry ball milling, and the grinding medium adopts oxidation Zir...

Embodiment 6

[0060] The preparation method of the starch / cellulose / PBAT composite film of embodiment 6, comprises the following steps:

[0061] 1) Add 100 parts of starch and 5 parts of cellulose acetate into a planetary ball mill for dry ball milling. The grinding medium is ceramic balls, the temperature is 60°C, the revolution speed of the ball mill is 55 rpm, the rotation speed is 110 rpm, and the ball milling time is 40 minutes to obtain pre-dispersed starch / fiber white;

[0062] 2) The raw material PBAT is divided into two parts, wherein, the mass fraction ratio of the first part PBAT and the starch added in the step 1) is 3:100, the mass fraction ratio of the second part PBAT and the starch added in the step 1) is 57:100;

[0063] 3) Add 5 parts of plasticizer, the first part of PBAT, 2 parts of stabilizer and 2 parts of coupling agent into the planetary ball mill equipped with pre-dispersed starch / cellulose in step 1) for dry ball milling, and the grinding medium is ceramic Balls,...

Embodiment 11

[0073] The preparation method of the starch / cellulose / PBAT composite film of embodiment 11, comprises the following steps:

[0074] 1) Add 100 parts of starch and 7 parts of cellulose acetate into a planetary ball mill for dry ball milling. The grinding medium is zirconia balls. The temperature is 60°C, the revolution speed of the ball mill is 60 rpm, the rotation speed is 110 rpm, and the ball milling time is 40 minutes to obtain pre-dispersed starch / cellulose;

[0075] 2) The raw material PBAT is divided into two parts, wherein, the mass fraction ratio of the first part PBAT and the starch added in the step 1) is 4:100, the mass fraction ratio of the second part PBAT and the starch added in the step 1) is 66:100;

[0076] 3) Add 24 parts of plasticizer, the first part of PBAT, 3 parts of stabilizer and 1 part of coupling agent into the planetary ball mill equipped with pre-dispersed starch / cellulose in step 1) for dry ball milling, and the grinding medium adopts oxidation ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a starch/cellulose/PBAT composite film which comprises the following components in parts by mass: 100 parts of starch, 1-10 parts of modified cellulose, 5-20 parts of a plasticizer, 0.5-4 parts of a lubricant, 0.5-4 parts of a stabilizer, 1-5 parts of a coupling agent, 2-10 parts of an adhesive and 50-100 parts of PBAT. The composite film is good in mechanical property and retrogradation resistance, good in processability, high in processing efficiency, simple in preparation process, low in cost and suitable for large-scale production, and the actual filling amount can reach 60%. The starch/cellulose/PBAT composite master batch premixed composite material is directly prepared by creatively utilizing a ball milling method. The dispersity of reinforcement cellulose in a PBAT/starch matrix is improved while refining treatment is carried out, starch is plasticized and grafted with cellulose, and a particle reinforcing effect is achieved. The starch is entangled with PBAT molecules, and high-strength and easy-to-process thermoplastic starch is obtained through mechanochemical modification.

Description

technical field [0001] The invention relates to the field of biodegradable plastics, in particular to a starch / cellulose / PBAT composite film and a preparation method thereof. Background technique [0002] People's awareness of environmental protection is increasing day by day, and biodegradable plastics show a huge market space. Polybutylene adipate / terephthalate (PBAT) is formed by direct esterification and melt polycondensation of adipic acid, terephthalic acid and 1,4-butanediol under catalytic conditions. It is a complete A new type of biodegradable green plastic with good ductility and biocompatibility, which can be used in film, bag packaging and other fields. Compared with traditional plastics such as PE, after PBAT is discarded, it can be completely degraded into CO under composting conditions. 2 And water, so as to solve the problem of "white pollution" of traditional plastics, it is one of the fastest growing and most widely used biodegradable plastics. However,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L67/02C08L1/12C08L23/08C08K5/00C08K5/21C08K5/053C08K5/20C08K5/10C08K5/544C08K5/5425C08K5/548C08J5/18B02C17/10B02C17/20
CPCC08J5/18B02C17/10B02C17/20C08J2303/02C08J2467/02C08J2401/12C08J2423/08C08K5/00C08K5/21C08K5/053C08K5/20C08K5/10C08K5/544C08K5/5425C08K5/548
Inventor 郎海涛钱少平田佳榕王雅萱
Owner NINGBO UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap