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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

AI Technical Summary

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 cost and poor environmental protection of traditional starch bioplastics, and make the prepared bioplastics water-resistant and physical-mechanical. Good performance, easy to promote large-scale production

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
Effect test

Embodiment 1

[0032] Mix 18kg of butyl acrylate, 25kg of methyl methacrylate, 12kg of acrylic acid, 2kg of octylphenol polyoxyethylene ether and 43kg of deionized water, heat to 48°C and keep stirring, then add ammonia water to adjust the pH to 7 , to obtain the polyacrylate precursor solution, and then add 35kg of starch ultrafine particles, using an ultrasonic frequency of 40kHz and a power density of 0.7W / cm 2 Ultrasonic assisted dispersion is uniform; then add 1.7kg of dibenzoyl peroxide to form a hyperbranched macromolecule that coats starch ultrafine particles to obtain a composite starch filler; then take 25kg of composite starch filler and 60kg of poly Premix ethylene and 15kg of processing aids in a high-speed mixer, knead, extrude, and granulate with an extruder, and then cool and dry to obtain starch bioplastics;

[0033] The starch bioplastic prepared in Example 1 was tested for elongation at break, water absorption and processing cost, and the obtained data are shown in Table 2...

Embodiment 2

[0035] Mix 15kg of butyl acrylate, 20kg of methyl methacrylate, 10kg of acrylic acid, 1kg of glyceryl monostearate and 54kg of deionized, heated to 45°C and keep stirring, then add ammonia water to adjust the pH to 6, Obtain the polyacrylate precursor solution, then add 30kg of starch ultrafine particles, using an ultrasonic frequency of 38kHz and a power density of 0.6W / cm 2Ultrasonic assisted dispersion is uniform; then add 1.3kg of tertiary butyl peroxide to form a hyperbranched macromolecule that coats starch ultrafine particles in it to obtain a composite starch filler; then take 20kg of composite starch filler and 70kg 10kg of polyethylene and 10kg of processing aids are pre-mixed in a high-speed mixer, mixed, extruded, and granulated by an extruder, and 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 obtained data are shown in Table 2.

Embodiment 3

[0038] Mix 20kg of butyl acrylate, 30kg of methyl methacrylate, 15kg of acrylic acid, 3kg of sodium dodecylbenzenesulfonate and 32kg of deionized water, heat to 50°C and keep stirring, then add ammonia water to adjust the pH to 8. Obtain the polyacrylate precursor solution, then add 40kg of starch ultrafine particles, using an ultrasonic frequency of 45kHz and a power density of 0.8W / cm 2 Ultrasonic assisted dispersion is uniform; then add 2.1kg of diisopropyl peroxydicarbonate to form a hyperbranched macromolecule that coats starch ultrafine particles in it to obtain a composite starch filler; then take 30kg of composite starch filler and 50kg The polyethylene and 20kg of processing aids are pre-mixed in a high-speed mixer, mixed, extruded, and granulated by an extruder, and 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 obtained data are show...

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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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