Starch composite material and preparing method

A composite material and starch technology, which is applied in the field of starch composite materials and its preparation, can solve the problems of excessive waste water and poor operability of layered silicate clay expansion and modification, so as to improve the interlayer microenvironment, expand the interlayer spacing, strengthen the Affinity effect

Inactive Publication Date: 2007-04-11
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a green, easy to operate, low-cost and biodegradable starch intercalated layered silicate nanocomposite material preparation method; Poor process characteristics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Sorbitol and montmorillonite are mixed in a high-speed mixer in a ratio of 100:50 in mass ratio, and the mixer rotating speed is 3000 rev / min for 3 minutes, extruded through a screw plastic extruder, and the mixture is fed from a feed port to The extrusion temperature of the machine head is 120°C-130°C-130°C in sequence. After the extruded product is cooled, it is pulverized with a pulverizer to obtain a modified montmorillonite powder for performance testing. The properties are shown in Table 1.

Embodiment 2

[0021] Add urea and montmorillonite to a high-speed mixer in a mass ratio of 100:50 and mix them in a high-speed mixer. The mixer speed is 3000 rpm for 2 minutes and extruded through a screw plastic extruder. The mixture is fed from the feed port to The extrusion temperature of the machine head is 120°C-130°C-130°C in sequence. After the extruded product is cooled, it is pulverized with a pulverizer to obtain a modified montmorillonite powder for performance testing. The properties are shown in Table 1.

Embodiment 3

[0023] Add sorbitol and kaolin into a high-speed mixer in a mass ratio of 100:5 and mix them at a speed of 1000 rpm for 3 minutes. Extrude through a screw plastic extruder. The extrusion temperature is 120°C-130°C-130°C in sequence. After the extrudate is cooled, it is pulverized with a pulverizer to obtain modified kaolin powder for performance testing. The properties are shown in Table 1.

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Abstract

The present invention relates to starch composite material and its preparation process. Specifically, the preparation process includes the following steps: 1. mixing intercalating agent and layer silicate clay in the weight ratio of 100 to (5-100) for 2-3 min and extruding in a screw extruder to form modified layer silicate clay; 2. mixing modified layer silicate clay, starch and starch plasticizer in the weight ratio of (20- 30) to 100 to (0-20) at high speed for 2-3 min, and extruding in a screw extruder at 100-130 deg.c to obtain nanometer starch intercalated layer silicate composite material. The preparation process is environment friendly.

Description

technical field [0001] The invention relates to a starch composite material and a preparation method. Background technique [0002] In the 21st century, the sustainable development of society and the related ecological environment, resources, economy and other issues have been raised to the height of development strategy. More stringent environmental protection laws and regulations have been promulgated, prompting the chemical industry to focus on eliminating or reducing the generation of waste from the source, that is, prevention of pollution sources, rather than treatment after pollution. The development of biodegradable materials has become an important way to solve "white pollution"; it is also an important way to solve the contradiction between sustainable development and economic development. Among the many alternative degradable materials such as aliphatic polyesters, natural polymers and their derivatives, starch is considered to be th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08K9/04
Inventor 马骁飞于九皋
Owner TIANJIN UNIV
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