Starch based thermoplastic material and preparation method thereof

A thermoplastic material and starch technology, applied in the field of thermoplastic materials, can solve the problems of unsolvable materials and the difficulty of large-scale application of thermoplastic starch-based materials, and achieve the effects of high biomass content, low cost and excellent thermoplastic performance.

Active Publication Date: 2015-09-09
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The current thermoplastic starch-based materials cannot solve the four problems of material thermoplasticity, strong hydrophilicity, mechanical properties and plasticizer migration, so thermoplastic starch-based materials are difficult to apply on a large scale

Method used

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  • Starch based thermoplastic material and preparation method thereof
  • Starch based thermoplastic material and preparation method thereof
  • Starch based thermoplastic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 100 parts of modified starch 1 and 0.5 part of potassium persulfate (produced by Sinopharm Group Chemical Reagent Co., Ltd.) were dispersed in 200 parts of water, ultrasonically dispersed to obtain an emulsion, and 100 parts of methyl acrylate (Sinopharm Group Chemical Reagent Co., Ltd.) were added. Production), stirred and reacted in a water bath at 70°C for 12 hours, added a small amount of ethanol to break the emulsion, and dried by suction filtration.

[0052] The starch-based thermoplastic material was hot-pressed by a flat vulcanizer to obtain a sheet with a thickness of 1 mm, and was cut into a standard sample according to relevant standards for mechanical property testing. The test results are listed in Table 1.

Embodiment 2

[0054] Except that the modified starch 1 was changed to modified starch 2, and 0.5 parts of potassium persulfate (produced by Sinopharm Chemical Reagent Co., Ltd.) was changed to 5 parts of ammonium persulfate (produced by Sinopharm Chemical Reagent Co., Ltd.), all the other conditions were the same Example 1.

[0055] The starch-based thermoplastic material was hot-pressed by a flat vulcanizer to obtain a 1mm-thick sheet, which was cut into standard specimens for mechanical performance testing according to relevant standards. The test results are listed in Table 1.

Embodiment 3

[0057] Disperse 100 parts of modified starch 3 and 1 part of sodium persulfate (produced by Sinopharm Chemical Reagent Co., Ltd.) in 1000 parts of water, ultrasonically disperse to obtain an emulsion, add 300 parts of ethyl acrylate (produced by Sinopharm Chemical Reagent Co., Ltd. Production), stirred and reacted in a water bath at 70°C for 12 hours, added a small amount of ethanol to break the emulsion, and dried by suction filtration.

[0058] The starch-based thermoplastic material was hot-pressed by a flat vulcanizer to obtain a sheet with a thickness of 1 mm, and was cut into a standard sample according to relevant standards for mechanical property testing. The test results are listed in Table 2.

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PUM

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Abstract

The invention discloses a starch based thermoplastic material and a preparation method thereof. The thermoplastic material is prepared from polymerization of components comprising, by weight, 100 parts of modified starch, 100-300 parts of monomers, 0.5-10 parts of initiators and 200-1000 parts of water. The modified starch is prepared from components comprising, by weight, 100 parts of natural starch, 0-200 parts of solvent, 10-50 parts of catalysts and 1-50 parts of modifiers. The preparation method includes that that the starch based thermoplastic material is prepared from the components according to the stated amounts after polymerization reaction. Plasticizing processing of starch can be realized without adding of plasticizers and blending with other materials, production efficiency is high, the thermoplastic material is low in cost, simple in process, controllable in performance, and applicable to preparation of thermoplastic materials with various performance requirements.

Description

technical field [0001] The invention relates to the field of thermoplastic materials, in particular to a starch-based thermoplastic material and a preparation method. Background technique [0002] Since the mid-to-late 1990s, my country’s grain harvest has been bumper year after year, and the national grain inventory has reached the highest level in history. According to statistics, even if the purchase volume of the year is not considered, the existing inventory of state-owned grain enterprises can meet the sales volume of more than one year. At present, there are a large amount of old and aged grains in our country. These grains cannot be used as human rations, and can only be used in low-value and high-pollution industries such as papermaking. Some crops such as cassava and kudzu root can only be used for industrial production due to their low nutritional value. Starch has the advantages of degradability, low price, rich sources, and easy modification. If starch can be a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/10C08F220/14C08F220/18
Inventor 东为富孙钰杰马丕明陈明清李婷
Owner JIANGNAN UNIV
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