Low-cost method for preparing starch bioplastic

A bioplastic and low-cost technology, applied in the field of low-cost preparation of starch bioplastics, can solve the problems of complex preparation process, poor environmental protection, high energy consumption, etc., and achieve the effect of simple process, low cost and low viscosity

Active Publication Date: 2018-05-04
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a low-cost method for preparing starch bioplastics, which can solve the problems of complex preparation process, high energy consumption, high co

Method used

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  • Low-cost method for preparing starch bioplastic
  • Low-cost method for preparing starch bioplastic

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0031] Example 1

[0032] Mix 18kg of butyl acrylate, 25kg of methyl methacrylate, 12kg of acrylic acid, 2kg of octylphenol polyoxyethylene ether and 43kg of deionized mixture, heat to 48℃ with constant stirring, then add ammonia water to adjust the pH to 7 , Get the polyacrylate precursor, then add 35kg of superfine starch granules, use the ultrasonic frequency of 40kHz, power density of 0.7W / cm 2 The ultrasonic assisted dispersion is uniform; then 1.7kg of dibenzoyl peroxide is added to form the hyperbranched macromolecules that coat the superfine starch particles to obtain the composite starch filler; then 25kg of the composite starch filler and 60kg of poly Ethylene and 15kg of processing aids are pre-mixed in a high-speed mixer, mixed with an extruder, extruded, granulated, cooled and dried, and starch bioplastics can be obtained;

[0033] The starch bioplastic prepared in Example 1 was tested for elongation at break, water absorption and processing cost, and the data obtained...

Example Embodiment

[0034] Example 2

[0035] Mix 15kg of butyl acrylate, 20kg of methyl methacrylate, 10kg of acrylic acid, 1kg of glycerol monostearate and 54kg of deionized mixture, heat to 45°C with constant stirring, then add ammonia to adjust the pH to 6. Obtain the polyacrylate precursor solution, and then add 30kg of superfine starch particles, using an ultrasonic frequency of 38kHz and a power density of 0.6W / cm 2 Ultrasonic assisted dispersion uniformly; then add 1.3kg of special acid tert-butyl peroxide to form hyperbranched macromolecules that coat superfine starch granules to obtain composite starch filler; then take 20kg of composite starch filler and 70kg The polyethylene and 10kg of processing aids are pre-mixed in a high-speed mixer, mixed, extruded, granulated by an extruder, cooled and dried to obtain starch bioplastics;

[0036] The starch bioplastic prepared in Example 2 was tested for elongation at break, water absorption and processing cost, and the data obtained is shown in Tab...

Example Embodiment

[0037] Example 3

[0038] Mix 20kg of butyl acrylate, 30kg of methyl methacrylate, 15kg of acrylic acid, 3kg of sodium dodecylbenzene sulfonate and 32kg of deionized mixture, heat to 50℃ with constant stirring, then add ammonia water to adjust the pH to 8. Obtain the polyacrylate precursor solution, and then add 40kg of superfine starch particles, using an ultrasonic frequency of 45kHz and a power density of 0.8W / cm 2 The ultrasonic assisted dispersion is uniform; then 2.1kg of diisopropyl peroxydicarbonate is added to form hyperbranched macromolecules that coat the superfine starch particles to obtain composite starch filler; then 30kg of composite starch filler and 50kg The polyethylene and 20kg of processing aids are pre-mixed in a high-speed mixer, mixed, extruded, granulated by an extruder, cooled and dried to obtain starch bioplastics;

[0039] The starch bioplastic prepared in Example 3 was tested for elongation at break, water absorption and processing cost, and the data ob...

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Abstract

The invention belongs to the technical field of plastic preparation and provides a low-cost method for preparing starch bioplastic. The method comprises the following steps: preparing a precursor solution from butyl acrylate, methyl methacrylate, acrylic acid, an emulsifier and deionized water; adding starch superfine particles and performing ultrasonic dispersion; further adding an initiator to initiate a polymerization reaction to generate a hyperbranched polymer, and coating the starch superfine particles in a cavity; performing extrusion granulation with matrix resin and processing auxiliaries to obtain the starch bioplastic. Compared with traditional methods, the method provided by the invention has the advantages of simple preparation process, easily available raw materials, low energy consumption, low processing difficulty, relatively low cost and high environmental friendliness; moreover, the prepared starch bioplastic has relatively good water resistance, physical and mechanical properties and the like and can be applied to large-scale popularization and production.

Description

technical field [0001] The invention belongs to the technical field of plastic preparation and provides a low-cost method for preparing starch bioplastics. Background technique [0002] In recent years, with the continuous rise of international crude oil prices and the increasingly tight oil resources, the economic and environmental significance of bio-based materials has become increasingly apparent, and the internal driving force for industrial development has continued to increase. Starch-based plastics, as a class of bio-based materials, have made some major breakthroughs in production technology in recent years, basically overcome the cost and performance constraints in the industrial production process, and have achieved rapid development. [0003] Starch is a natural polyglucose macromolecule, which widely exists in the fruit, root, stem and leaf of plants in the form of granules. Starch is composed of two parts, amylose and amylopectin. Starches from different sourc...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L3/02C08L33/12
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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