Microcrystalline cellulose and polycaprolactone reinforced starch-based full-biodegradable blending material and preparation method thereof

A technology of microcrystalline cellulose and polycaprolactone is applied in the field of starch-based fully biodegradable blend materials and their preparation, and can solve the problems of increased production cost of starch-based materials, limited application of starch-based materials, complicated preparation process, etc. , to achieve the effect of convenient preparation process, excellent mechanical properties and simple components

Inactive Publication Date: 2013-04-03
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The blended materials of polycaprolactone and starch have been studied, but it is necessary to add a large amount of polycaprolactone to make the starch-based material achieve better mechanical properties, and the addition of a large amount of polycaprolactone will inevitably lead to starch Substantial increase in base material production costs
Although some other reinforcing agents used in starch-based materials can impro...

Method used

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  • Microcrystalline cellulose and polycaprolactone reinforced starch-based full-biodegradable blending material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 40 grams of microcrystalline cellulose and add it to 600 grams of glycerin under stirring to make it more evenly dispersed. Then put the dispersed mixed solution in an ultrasonic instrument for 30 minutes so that the microcrystalline cellulose is fully dispersed and uniform.

[0028] (2) Put the starch in a superfine pulverizer to refine it to 400 mesh.

[0029] (3) Weigh 857 grams of polycaprolactone and place it in a vacuum drying oven to fully dry it.

[0030] (4) Weigh 2000 grams of the refined starch obtained in step (2), put it in a high-speed mixer and mix it at high speed for 10 minutes, then add the microcrystalline cellulose and glycerin mixture dispersed in glycerin in step (1) to the high-speed mixer Mix in a mixer with the refined starch for 10 minutes at high speed, mix well, take out the mixture, seal it and let it stand for 1 day before use.

[0031] (5) Put the resting material obtained in step (4), the material in step (3) and 40 grams of s...

Embodiment 2

[0035] (1) Weigh 80 grams of microcrystalline cellulose, add 600 grams of glycerin under stirring to make the dispersion more uniform. Then put the dispersed mixed solution in an ultrasonic instrument for 30 minutes so that the microcrystalline cellulose is fully dispersed and uniform.

[0036] (2) Put the starch in a superfine pulverizer to refine it to 400 mesh.

[0037] (3) Weigh 500 grams of polycaprolactone and place it in a vacuum drying oven to fully dry it.

[0038] (4) Weigh 2000 grams of the refined starch obtained in step (2), put it in a high-speed mixer and mix it at high speed for 10 minutes, then add the microcrystalline cellulose and glycerin mixture dispersed in glycerin in step (1) to the high-speed mixer Mix in a mixer with the refined starch for 10 minutes at high speed, mix well, take out the mixture, seal it and let it stand for 1 day before use.

[0039] (5) Put the resting material obtained in step (4), the material in step (3) and 40 grams of silane ...

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Abstract

The invention relates to a microcrystalline cellulose and polycaprolactone reinforced starch-based full-biodegradable blending material and a preparation method thereof. The microcrystalline cellulose and polycaprolactone reinforced starch-based full-biodegradable blending material comprises the following components in parts by weight: 100 (as a base number) of starch, 0.1-10 of microcrystalline cellulose, 1-100 of polycaprolactone, 0.1-10 of coupling agent, and 10-50 of glycerol. The preparation method comprises the steps: dispersing microcrystalline cellulose; refining the starch; drying polycaprolactone; evenly mixing microcrystalline cellulose and the refined starch; evenly mixing microcrystalline cellulose and the refined starch, polycaprolactone and the coupling agent; and pelletizing to obtain granules. The starch-based blending material reinforced by microcrystalline cellulose and polycaprolactone is tripled obviously in tensile strength, has excellent mechanical property and full-biodegradation property, is simple in raw materials, and convenient to prepare, and can be used for producing various materials and be widely applied in the field of degradable plastics.

Description

technical field [0001] The invention relates to a starch-based fully biodegradable blend material reinforced by microcrystalline cellulose and polycaprolactone and a preparation method thereof. Background technique [0002] In recent years, global environmental and resource issues have led to challenges for petroleum-based plastic materials, and degradable polymer materials have attracted much attention because of their degradability and no pollution to the environment. Among them, starch is an important class of natural polymers. It is widely used in the research of plastic materials because of its environmental friendliness, renewable, abundant sources, and cheap price. It has become a research hotspot in degradable plastics [Chiellini E ., Solaro R. Biodegradable polymeric materials. Advanced Materials, 1996, 8(4):305-313.]. However, the molecular structure characteristics of starch itself lead to the infeasibility of its direct molding processing, so it is necessary to ...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08L67/04C08L1/02
Inventor 刘文勇陈一江萍杨军红李祥刚黄宇刚刘跃军
Owner HUNAN UNIV OF TECH
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