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Process for producing crosslinked material of polylactic acid and crosslinked material of polylactic acid

A technology of polylactic acid and cross-linking monomer is applied in the field of preparing polylactic acid cross-linking material and polylactic acid cross-linking material, which can solve the problems of not discussing resin products, lack of flexibility, etc.

Inactive Publication Date: 2008-03-12
SUMITOMO ELECTRIC FINE POLYMER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The patent document proposes that the above-mentioned modified biodegradable resin has improved flexibility and adhesion, but does not discuss whether it can maintain the shape of the resin product at a temperature equal to or higher than the glass transition temperature of polylactic acid, thus leaving the improvement Space
In addition, the flexibility of this resin is also insufficient because the elongation of the resin after rupture ranges from about 1.7% to 3.4%, see Table II on page (7) of Patent Document 1

Method used

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  • Process for producing crosslinked material of polylactic acid and crosslinked material of polylactic acid
  • Process for producing crosslinked material of polylactic acid and crosslinked material of polylactic acid
  • Process for producing crosslinked material of polylactic acid and crosslinked material of polylactic acid

Examples

Experimental program
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Effect test

Embodiment 1

[0138] As the polylactic acid, pelletized polylactic acid LACEA H-280 manufactured by Mitsui Chemicals was used. A plasticizer containing a rosin derivative as its main component ("Lactcizer GP-2001" manufactured by Arakawa Chemical industries, LTD.) and TAIC (an allylic type crosslinking monomer) were prepared, and then processed by using an extruder ( PCM30 manufactured by Ikegai LTD.), a mixture of polylactic acid and plasticizer was melt-extruded at a barrel temperature of 160°C, while TAIC was dripped at a constant rate to the pellet supply of the extruder by a peristaltic pump (perista pump) parts, and then add them to the polylactic acid.

[0139] The content ratios of the plasticizer containing a rosin derivative as its component and TAIC in 100 wt% polylactic acid were adjusted to 15 wt% and 7 wt%, respectively. The extruded product was cooled in water, and then pelletized using a pelletizer to prepare a pelletized polylactic acid composition including polylactic aci...

Embodiment 2

[0143] The polylactic acid cross-linked material was obtained in the same manner as that used in Example 1, except that, relative to 100 wt% polylactic acid, the content ratio of the plasticizer containing rosin derivatives as its main component was 18 wt%, and the electron radiation dose was 30kGy .

Embodiment 3

[0145] The same procedure as that used in Example 1 was used except that the plasticizer containing rosin derivatives as its main component was contained in an amount of 20 wt % relative to 100 wt % of polylactic acid, and the electron radiation dose was 60 kGy.

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Abstract

A crosslinked material of polylactic acid produced by loading polylactic acid with a plasticizer containing at least a rosin derivative or a plasticizer containing a dicarboxylic acid derivative or / and glycerol derivative and a crosslinking monomer, blending them into a polylactic acid composition, molding the composition into a desired shape, and exposing the molding to ionizing radiation so as to effect crosslinking.

Description

technical field [0001] The present invention relates to a kind of method for preparing biodegradable polylactic acid cross-linked material, and thus prepared polylactic acid cross-linked material, more particularly, the present invention relates to biodegradable polylactic acid cross-linked material, and this material can be used In the field of using plastic products including structures such as films, containers and chassis, and plastic components, especially for solving problems concerning the disposal of used plastic products. Background technique [0002] Petroleum synthetic polymer materials used in many different films and containers are currently causing several social problems such as in their individual disposal processes, global warming due to heat and gases consumed in the incineration process, burning of gases and Harmful effects on food and human health caused by toxic substances present in combustion residues, and reduction of available waste landfill sites. ...

Claims

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Application Information

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IPC IPC(8): C08J7/00C08K5/10C08L67/04C08L93/04C08L101/16
Inventor 金泽进一川野清
Owner SUMITOMO ELECTRIC FINE POLYMER INC
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