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Preparation method of thermoplastic konjac glucomannan/poly butylenes succinate blending material

A technology of polybutylene succinate and konjac glucomannan is applied in the field of preparation of thermoplastic konjac glucomannan/polybutylene succinate blend material, which can solve the problem of high price and characteristics of PBS. The problems of low viscosity and high melt index can achieve the effect of low cost, good processing performance and improved processing performance.

Inactive Publication Date: 2014-05-21
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of PBS is high, the crystallinity is high, the molecular weight is low, the intrinsic viscosity is low, the melt index is high, and there are certain problems in processing and application, which limits its popularization and application.

Method used

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  • Preparation method of thermoplastic konjac glucomannan/poly butylenes succinate blending material
  • Preparation method of thermoplastic konjac glucomannan/poly butylenes succinate blending material
  • Preparation method of thermoplastic konjac glucomannan/poly butylenes succinate blending material

Examples

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Effect test

Embodiment 1

[0025] A preparation method of thermoplastic konjac glucomannan / polybutylene succinate blend material, comprising the following steps:

[0026] Take 80 parts of thermoplastic konjac glucomannan and 20 parts of polybutylene succinate according to the weight ratio, add them to a high-speed mixer and stir for 5 minutes, dry at a temperature of 35°C for 12 hours, and add the above blended materials to the twin-screw In an extruder, melt and blend for 8 minutes at 130°C and 0.5 MPa, extrude, cool, and pelletize to obtain a cylindrical particle blend material with a diameter of 2-3mm and a length of 3-4mm. The prepared blended material is processed into a thermoplastic konjac glucomannan / polybutylene succinate composite film (sheet) through a single-screw extrusion device (screw diameter 20-50mm, aspect ratio 25-40:1) .

Embodiment 2

[0028] A preparation method of thermoplastic konjac glucomannan / polybutylene succinate blend material, comprising the following steps:

[0029] Take 70 parts of thermoplastic konjac glucomannan, 30 parts of polybutylene succinate, 1 part of glycerin, and 6 parts of polycaprolactone according to the weight ratio, add them to a high-speed mixer and stir for 8 minutes, and dry at a temperature of 40 ° C. After 11 hours, put the above blend into a twin-screw extruder, melt and blend for 10 minutes at 140°C and 0.3MPa, extrude, cool, and pelletize to obtain 2-3mm in diameter and 3-4mm in length. Cylindrical particle blend material. The prepared blended material is processed into a konjac glucomannan / polybutylene succinate composite film or plate through a single-screw extrusion device (screw diameter 20-50mm, aspect ratio 25-40:1).

Embodiment 3

[0031] A preparation method of thermoplastic konjac glucomannan / polybutylene succinate blend material, comprising the following steps:

[0032] Take 60 parts of thermoplastic konjac glucomannan by weight, 40 parts of polybutylene succinate, 2 parts of polyethylene glycol, and 10 parts of polycaprolactone, and add them to the high-speed mixer and stir for 10 minutes. Dry at 45°C for 10 hours, put the above blend into a twin-screw extruder, melt and blend at 150°C and 0.6MPa for 12 minutes, extrude, cool and pelletize to obtain a diameter of 2-3mm and a length of 3mm. -4mm cylindrical particle blend material. The prepared blended material is processed into a konjac glucomannan / polybutylene succinate composite film or plate through a single-screw extrusion device (screw diameter 20-50mm, aspect ratio 25-40:1).

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Abstract

The invention discloses a preparation method of a thermoplastic konjac glucomannan / poly butylenes succinate blending material. The method is characterized by comprising the following steps of: preparing 1-99 parts by weight of thermoplastic konjac glucomannan, 1-99 parts by weight of poly butylenes succinate, 0-10 parts by weight of plasticizing agent and 0-20 parts by weight of compatibilizer, and mixing and stirring for 5-20 minutes to obtain a blending material; drying the blending material at the temperature of 30-50 DEG C for 9-12 hours; and adding the dried blending material into a double screw plastic extruder, fusing and blending at the temperature of 130-200 DEG C and under the pressure of 0.1-1MPa for 5-10 minutes, extruding, molding, cooling, and pelletizing to obtain the blending material. The method has a simple process; and the obtained blending material has excellent thermoplastic processing property and mechanical property in plastic extruding, blow molding, injection molding and foaming processes, and can be used for preparing films, plates, sheets, foamed materials, injection-molded materials, and the like.

Description

technical field [0001] The invention belongs to the field of biomass resource utilization and degradable materials, and relates to a preparation method of a thermoplastic konjac glucomannan / polybutylene succinate blend material. The prepared thermoplastic konjac glucomannan / polybutylene succinate blend material can be widely used in the fields of packaging, medicine, chemical industry, agriculture and environmental protection. Background technique [0002] Traditional plastic products are discarded after being used and discarded. Because they are not degradable, they have caused serious white pollution. White pollution is constantly destroying the environment on which we live. Many fertile fields have reduced production, land has become deserted, and rivers have been blocked, causing floods. Human beings are working hard to find ways to eliminate the harm caused by "white pollution" to people. In recent years, the solution to the harm of "white pollution" to human beings is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/02C08L67/02C08L71/00C08K5/053C08K5/12C08K5/11C08K5/1539B29C47/92B29B9/06B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/92514B29C2948/92704B29C2948/92895
Inventor 林晓艳李先红罗学刚刘锋
Owner SOUTHWEAT UNIV OF SCI & TECH
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