Starch modified full-biobased PBSA biodegradable plastics and preparation method therefor

A biodegradable plastic and starch modification technology, applied in the field of biodegradable plastics, can solve the problems of high carbon dioxide, consumption of petroleum resources, etc., to reduce consumption, solve white pollution, and improve mechanical properties.

Inactive Publication Date: 2018-12-07
JINING MING SHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The raw materials of PBSA are succinic acid, adipic acid and butanediol. Although PBSA plastic is a biodegradable plastic, judging from the current industrialized production equipment, its three sources of raw materials are still from petrochemical industry. Extracted, so PBSA plastic consumes petroleum resources and produces more carbon dioxide during the production process

Method used

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  • Starch modified full-biobased PBSA biodegradable plastics and preparation method therefor
  • Starch modified full-biobased PBSA biodegradable plastics and preparation method therefor
  • Starch modified full-biobased PBSA biodegradable plastics and preparation method therefor

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Experimental program
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Embodiment 1

[0038] The preparation of embodiment 1 starch-modified PBSA biodegradable plastics

[0039] (1) The ratio (mass ratio) of raw materials is as follows:

[0040]

[0041] (2) According to the above raw material ratio, it is prepared by the following steps:

[0042] (1) Synthesize full bio-based PBSA biodegradable resin according to the above method;

[0043] (2) Dry a certain amount of bio-based PBSA and cornstarch at 25 degrees and 0-5000 Pa for 2.0 hours;

[0044] (3) Add dry bio-based PBSA, cornstarch, bisphenol A, dibutyl hydroxytoluene, triethyl citrate, epoxy soybean oil, zinc stearate into the high mixer and mix for 15 minutes;

[0045] (4) extruding and granulating the obtained mixed material through a twin-screw extruder to obtain starch-bio-based PBSA composite plastic particles;

[0046] (5) The composite plastic can be made into various fully bio-based biodegradable plastic film materials through film blowing.

Embodiment 2

[0047] Embodiment 2 Preparation of starch-modified bio-based PBSA biodegradable plastics

[0048] (1) The ratio (mass ratio) of raw materials is as follows:

[0049]

[0050] (2) According to the above raw material ratio, it is prepared by the following steps:

[0051] (1) Synthesize full bio-based PBSA biodegradable resin according to the above method;

[0052] (2) Dry a certain amount of bio-based PBSA and cornstarch at 25 degrees and 0-5000 Pa for 3 hours;

[0053] (3) Add dry bio-based PBSA, starch, acetyl tri-n-butyl citrate, resorcinol dihydroxyethyl ether, butyl hydroquinone, epoxidized soybean oil, stearic acid into the high mixer calcium mix for 20 minutes;

[0054] (4) extruding and granulating the obtained mixed material through a twin-screw extruder to obtain starch-PBSA composite plastic particles;

[0055] (5) The composite plastic can be made into various fully bio-based biodegradable plastic film materials through film blowing.

Embodiment 3

[0056] Embodiment 3 Preparation of starch-modified bio-based PBSA biodegradable plastics

[0057] (1) The ratio (mass ratio) of raw materials is as follows:

[0058]

[0059] (2) According to the above raw material ratio, it is prepared by the following steps:

[0060] (1) Synthesize full bio-based PBSA biodegradable resin according to the above method;

[0061] (2) Dry a certain amount of bio-based PBSA and tapioca starch at 25 degrees and 0-5000 Pa for 3 hours;

[0062] (3) Add dried bio-based PBSA, tapioca starch, maleic anhydride, glyceryl triacetate, butyl hydrodiphenol, 1,4-butanediol, and zinc stearate into the high-mixer and mix for 25 minute;

[0063] (4) extruding and granulating the obtained mixed material through a twin-screw extruder to obtain starch-PBSA composite plastic pellets;

[0064] (5) The composite plastic can be made into various fully bio-based biodegradable plastic film materials through film blowing.

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Abstract

The invention discloses starch modified full-biobased PBSA biodegradable plastics and a preparation method therefor. The preparation method comprises the steps: (1) providing full-biobased polybutylene succinate/adipate (PBSA); (2) subjecting the full-biobased PBSA and starch to vacuum drying separately; (3) adding the dried full-biobased PBSA, the dried starch, a chain extender, an antioxidant, aplasticizer, a lubricant and a thermal stabilizer into a high-speed mixer, and carrying out uniform mixing; (4) subjecting the obtained mixed material to extruded granulating by a twin-screw extruder; and (5) carrying out film blowing on the composite plastic granules at a certain temperature, thereby obtaining the starch modified full-biobased PBSA biodegradable plastics. According to the starchmodified full-biobased PBSA biodegradable plastics prepared by the method disclosed by the invention, after composite modification, the requirements on complete degradation are met, meanwhile, the mechanical properties of pure PBSA resin are enhanced, the production cost is reduced effectively, and thus, the marketing is better facilitated.

Description

technical field [0001] The invention relates to the technical field of biodegradable plastics, in particular to a starch-modified full bio-based PBSA biodegradable plastic and a preparation method thereof. Background technique [0002] At present, with the continuous development of the national economy, the consumption of plastic products is increasing, and synthetic plastics are playing an increasingly important role in production and life. However, since most of the plastic products cannot be degraded after being discarded, they exist for a long time, and the continuous accumulation has caused serious white pollution. Environmentally friendly plastic products are becoming more and more urgent and have aroused extensive interest of researchers. Among them, degradable resins have become a research hotspot due to their degradation characteristics and economic characteristics. [0003] Polybutylene teresuccinate / adipate (PBSA) is a completely biodegradable polyester material,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L3/02C08K5/11C08K5/103C08L91/00C08K5/13C08K5/098
CPCC08J5/18C08J2367/02C08J2403/02C08K2201/014C08L67/02C08L2201/06C08L2203/16C08L2205/03C08L3/02C08L91/00C08K5/11C08K5/13C08K5/098C08K5/103
Inventor 施晓旦邵威
Owner JINING MING SHENG NEW MATERIALS CO LTD
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