Bicomponent fiber of polylactic acid and polyethylene butanediol succinate

A technology of poly(lactic acid, polybutylene succinate) and polybutylene succinate, applied in fiber treatment, conjugated synthetic polymer artificial filament, filament/thread forming, etc., can solve the problem of biodegradability Poor properties, difficulty in synthesis of high molecular weight polyaliphatic polyester, etc.

Inactive Publication Date: 2010-04-14
WUJIANG YINGXIANG CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through research, it is found that the biodegradability of aromatic polyesters containing benzene rings in the main polymer chain is poor, while the biodegradability of aliphatic polyesters synthesized from dibasic acids and dibasic alcohols, hydroxy acids or lactides is relatively poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] 1. Preparation of polysuccinic acid succinate: the raw materials are butanediol and succinic acid, and the molar ratio of addition is 1.10 to 1.15; the catalyst is p-toluenesulfonic acid and stannous chloride, and the addition amount of p-toluenesulfonic acid 100×10 of the amount of butanediol -6 , the amount of stannous chloride added is 400×10 of the amount of butanediol -6 . The catalyst is first dissolved in a small amount of butanediol at 100°C and configured as a butanediol solvent. Then mix it with the remaining butanediol and succinic acid to form a slurry and enter the reactor. In the continuous polymerization process, the esterification reaction is completed through two esterification tanks under normal pressure and reduced pressure, and the polycondensation reaction is completed through two tanks of pre-condensation and final polycondensation. . Synthetic process of polybutylene succinate:

[0019] condition

Ester I

Esterification II

...

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Abstract

The invention discloses a bicomponent fiber of polylactic acid and polyethylene butanediol succinate, which is characterized in that the polylactic acid and the polyethylene butanediol succinate are firstly obtained by polymerization; the two different polymers are respectively melted in the process of spinning silk and are combined into a single fiber in the last moment before extrusion to obtain a degradable fiber with puffing performance.

Description

technical field [0001] The invention relates to the field of fiber preparation, in particular to a poly(lactic acid polybutylene succinate) bicomponent fiber. Background technique [0002] As people pay more and more attention to environmental protection, biodegradable polymer materials (plastics, rubber, fibers, etc.) have become a research hotspot in countries all over the world. There are more and more types of degradable fibers, and their applications involve many fields such as medical, clothing, fishery, construction, sanitation, decoration, and industrial processing. Through research, it is found that the biodegradability of aromatic polyesters containing benzene rings in the main polymer chain is poor, while the biodegradability of aliphatic polyesters synthesized from dibasic acids and dibasic alcohols, hydroxy acids or lactides is relatively poor. Well, among them, polylactic acid and polybutylene succinate have a melting point higher than 100°C, have application ...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01D5/098D01D5/32
Inventor 沈家康王国柱赵广兵钮真荣
Owner WUJIANG YINGXIANG CHEM FIBER
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