Aliphatic-aromatic copolyester and PLA (Poly Lactic Acid) block copolymer and production method and application thereof and composition containing block copolymer

A technology of block copolymer and production method, applied in the field of polymer materials, can solve the problems of waste plastics, incompatibility hindering material performance, white pollution, etc., and achieve good strength, broad ecological and economic benefits, The effect of good toughness and elongation at break

Active Publication Date: 2012-09-12
HANGZHOU XINFU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While plastics bring convenience to human beings, they also bring some problems: 1. A large amount of waste plastics, especially the environmental pollution (white pollution) c

Method used

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  • Aliphatic-aromatic copolyester and PLA (Poly Lactic Acid) block copolymer and production method and application thereof and composition containing block copolymer
  • Aliphatic-aromatic copolyester and PLA (Poly Lactic Acid) block copolymer and production method and application thereof and composition containing block copolymer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1: Put 5kg of dry aliphatic-aromatic copolyester Q in a dry and nitrogen-replaced reactor, heat up to 100 degrees, adjust the stirring speed to 20rpm, and wait until the aliphatic-aromatic copolyester Q is complete After melting, 5 kg of lactide was added and replaced with nitrogen 3 times. After stirring for 30 minutes, 0.5% of the total weight of the mixture was added with catalyst stannous octoate and reacted for 24 hours. After the reaction is over, add phosphoric acid stabilizer, continue to stir and react for 30 minutes, and then vacuum to devolatilize. The block copolymer PLA-Q-PLA was obtained.

[0029] The catalyst in the first embodiment can be at least one of organic alkaline earth metal compounds, organic transition metal compounds, rare earth organic compounds, aluminum, germanium, tin, and antimony organic compounds, or a mixture thereof. Specifically, tin octoate, stannous octoate, and ethyl acetate can be used. One or more mixtures of base zinc, a...

Example Embodiment

[0030] Example 2: Put 3kg of dry aliphatic-aromatic copolyester Q in a dry and nitrogen-replaced reactor, heat up to 250 degrees, adjust the stirring speed to 20rpm, and wait until the aliphatic-aromatic copolyester Q is complete After melting, 7 kg of lactide was added and replaced with nitrogen 3 times. After stirring for 30 minutes, 0.01% of the total weight of the mixture was added with stannous octoate and reacted for 3 hours. After the reaction is over, add phosphoric acid stabilizer, continue to stir and react for 30 minutes, and then vacuum to devolatilize. The block copolymer PLA-Q-PLA was obtained.

Example Embodiment

[0031] Example 3: Put 7kg of dry aliphatic-aromatic copolyester Q in a dry and nitrogen-replaced reactor, heat up to 200 degrees, adjust the stirring speed to 20rpm, and wait until the aliphatic-aromatic copolyester Q is complete After melting, 3 kg of lactide was added and replaced with nitrogen 3 times. After stirring for 30 minutes, 5% of the total weight of the mixture was added with diethyl zinc and reacted for 12 hours. After the reaction is over, add phosphoric acid stabilizer, continue to stir and react for 30 minutes, and then vacuum to devolatilize. The block copolymer PLA-Q-PLA was obtained.

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Abstract

The invention discloses an aliphatic-aromatic copolyester and PLA (Poly Lactic Acid) block copolymer and a production method and an application thereof and a composition containing the block copolymer, which belong to the technical field of high molecular materials. The aliphatic-aromatic copolyester and PLA block copolymer consists of aliphatic-aromatic copolyester Q and a PLA block, and is taken as a biodegradable material; and the block copolymer can be prepared into a modified PLA material and a modified aliphatic-aromatic copolyester Q material. A product prepared with the method has wide production benefit and economic benefit.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an aliphatic-aromatic copolyester and PLA block copolymer, a production method, application and a composition containing the block copolymer. Background technique [0002] With the development of the world economy, human beings use more and more plastics, and the scope of use is more and more extensive. While plastics bring convenience to human beings, they also bring some problems: 1. A large amount of waste plastics, especially the environmental pollution (white pollution) caused by plastic bags. 2. The raw material petroleum resources for producing plastics are limited. [0003] The bio-based degradable plastic polylactic acid (PLA) can be biodegraded into CO under water-oxygen moderate conditions 2 and H 2 O, and the raw material of PLA comes from plant corn. The discovery and development of PLA have solved two problems encountered by the traditional...

Claims

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Application Information

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IPC IPC(8): C08G63/688C08G63/685C08G63/08C08L67/04C08L67/00
Inventor 莫国军戴清文方柏勇肖湘莲王青青刘英
Owner HANGZHOU XINFU TECH CO LTD
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