Biodegradable starch-based resin composition

A resin composition and biodegradation technology, applied in the field of starch-based resin compositions, can solve the problems of complex utilization, complex formulation and process, and high production cost, and achieve the effects of broad application prospects, elimination of white pollution, and good environmental benefits.

Inactive Publication Date: 2016-06-08
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production methods and patented products of starch-based plastics at home and abroad have more or less degradation and mechanical properties, and many formulas and processes are quite complicated and the production cost is too high. There is no way to obtain them in actual production. Well utilized, there are very few mature products with real market significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The biodegradable starch-based resin composition of this embodiment includes:

[0027] 30 parts starch

[0028] 50 parts of starch and acrylate graft copolymer

[0029] 20 parts of acrylate homopolymer,

[0030] The above are parts by weight.

[0031] The composition is a homogeneous mixture formed by graft polymerization or mechanical mixing.

[0032] The above-mentioned starch is corn starch.

[0033] The graft copolymer of starch and acrylate is a graft copolymer of starch and methyl acrylate, and the acrylate homopolymer is a methyl acrylate homopolymer.

[0034] The grafting amount of starch and acrylate graft copolymer is 20%.

[0035] Extrude the above-mentioned material at 100°C, water content of 18% (the biodegradable starch-based resin composition is added to the foaming agent water, and the water content after mixing is 18%), and the sheet is extruded at 20MPa, and measured at room temperature The performance is:

[0036] Tensile strength>45Mpa, tensile modulus>200MPa, elo...

Embodiment 2

[0045] The biodegradable starch-based resin composition of this embodiment includes:

[0046] 30 parts starch

[0047] 50 parts of starch and acrylate graft copolymer

[0048] 15 parts of acrylate homopolymer,

[0049] The above are parts by weight.

[0050] The biodegradable starch-based resin composition further includes 5 parts by weight of water.

[0051] The composition is a homogeneous mixture formed by graft polymerization or mechanical mixing.

[0052] The above-mentioned starch is sorghum starch.

[0053] The graft copolymer of starch and acrylate is a graft copolymer of starch and butyl acrylate, and the acrylate homopolymer is a butyl acrylate homopolymer.

[0054] The grafting amount of starch and acrylate graft copolymer is 30%.

[0055] The above-mentioned materials are extruded at 100°C, (the water content of the biodegradable starch-based resin composition and the foaming agent), the water content is 20%, and the sheet is 20MPa. The properties measured at room temperature are...

Embodiment 3

[0065] The biodegradable starch-based resin composition of this embodiment includes:

[0066] 30 parts starch

[0067] 50 parts of starch and acrylate graft copolymer

[0068] 10 parts of acrylate homopolymer,

[0069] The above are parts by weight.

[0070] The biodegradable starch-based resin composition further includes 16 parts by weight of water.

[0071] The composition is a homogeneous mixture formed by graft polymerization or mechanical mixing.

[0072] The above-mentioned starch is wheat starch.

[0073] The graft copolymer of starch and acrylate is a graft copolymer of starch and methyl acrylate. The acrylate homopolymer is a mixture of methyl acrylate homopolymer and butyl acrylate homopolymer, methyl acrylate homopolymer and butyl acrylate. The amount of homopolymer mixture is 1:1.

[0074] The grafting amount of starch and acrylate graft copolymer is 45%.

[0075] The above-mentioned materials are extruded at 100°C, (the water content of the biodegradable starch-based resin com...

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Abstract

The invention relates to a biodegradable starch-based resin composition. The biodegradable starch-based resin composition is characterized by comprising, by weight, 30-90 parts of starch, 10-50 parts of starch and acrylic ester grafted copolymers and 0.1-40 parts of acrylic ester homopolymers. The biodegradable starch-based resin composition has the advantages that raw materials for the biodegradable starch-based resin composition can come from wide sources, are low in cost and are easily available, and the biodegradable starch-based resin composition is superior to domestic like products in the aspects of service performance, biodegradable performance, price and the like; the biodegradable starch-based resin composition can be completely decomposed and quickly absorbed by microorganisms in soil after being reused, is free of environmental pollution and has an excellent environmental benefit and a broad application prospect; research and development of the biodegradable starch-based resin composition have a positive significance on relieving 'white pollution' and scarcity of petroleum resources, and the biodegradation starch-based resin composition has excellent economical and social benefits.

Description

(1) Technical field [0001] The invention belongs to the technical field of biodegradable materials, and specifically relates to a biodegradable starch-based resin composition. (2) Background technology [0002] With the rapid development of plastics industry technology, an increasing number of plastic products have brought near-destructive disasters to the environment; a large amount of plastic waste has been abandoned in the social environment, and the "white pollution" created has become the most difficult problem in all countries. . However, the treatment of "white pollution" from the consumer terminal has little effect. To fundamentally solve the environmental pollution problem of waste plastics, it is necessary to replace the existing plastic products with degradable and easily degradable plastic products. [0003] Starch has the characteristics of being renewable, cheap, easy to store and easy to transport. Under certain conditions, it can undergo various reactions and deriv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/02C08L3/02C08L33/08C08K3/34C08J9/08
CPCC08L51/02C08J9/08C08J2203/02C08J2303/02C08J2333/08C08J2351/02C08J2403/02C08J2433/08C08J2451/02C08L3/02C08L33/08C08L2201/06C08L2203/14C08L2205/025C08L2205/03C08L2205/035C08L2205/24C08K3/34
Inventor 刘明张菡英
Owner SHANDONG NORMAL UNIV
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