SYNTHESIS OF 4,4’ AZOBIS (4 CYANOPENTANOYL p METHYLANILIDE) AND USE AS AN INITIATOR FOR RADICAL BLOCK COPOLYMERIZATION

DONG Lishuang; QIU Kunyuan; LU Wenkui; CHEN Dequan

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SYNTHESIS OF 4,4’ AZOBIS (4 CYANOPENTANOYL p METHYLANILIDE) AND USE AS AN INITIATOR FOR RADICAL BLOCK COPOLYMERIZATION

Research Article | 更新时间：2021-03-19

- SYNTHESIS OF 4,4’ AZOBIS (4 CYANOPENTANOYL p METHYLANILIDE) AND USE AS AN INITIATOR FOR RADICAL BLOCK COPOLYMERIZATION
- Acta Polymerica Sinica Issue 1, Pages: 91-96(1997)
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- Published：20 February 1997，
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DONG Lishuang, QIU Kunyuan, LU Wenkui, CHEN Dequan. SYNTHESIS OF 4,4’ AZOBIS (4 CYANOPENTANOYL p METHYLANILIDE) AND USE AS AN INITIATOR FOR RADICAL BLOCK COPOLYMERIZATION. [J]. Acta Polymerica Sinica (1):91-96(1997)
DOI：

DONG Lishuang, QIU Kunyuan, LU Wenkui, CHEN Dequan. SYNTHESIS OF 4,4’ AZOBIS (4 CYANOPENTANOYL p METHYLANILIDE) AND USE AS AN INITIATOR FOR RADICAL BLOCK COPOLYMERIZATION. [J]. Acta Polymerica Sinica (1):91-96(1997) DOI：

摘要

合成了一类新型的含偶氮基和对甲苯基氨基甲酰基的多功能引发剂

４

４’-偶氮二（４-氰基戊酰对甲苯胺）．测定其偶氮键热分解反应为一级反应

分解活化能为１２４.６ＫＪ·ｍｏｌ－１．利用引发剂中对甲苯氨基甲酰与Ｃｅ（ＩＶ）盐的氧化还原引发单体聚合

得到含有偶氮端的预聚物

它在６５℃热分解引发另一单体聚合生成嵌段共聚物．纯化后的共聚物

经ＩＲ等结构表征为嵌段共聚物。

Abstract

A new kind polyfunctional initiator 4

4’ azobis (4 cyanopentanoyl p methyl anilide)(ACPMA) has been synthesized from 4

4' azobis (4 cyano pentanoic acid) via two steps reactions. The thermal decomposition rate of ACPMA in DMF was determined by nitrogen evolution technique at 65

80℃

respectively. It was found that the decomposition reaction follow first order kinetic and the activation energy was calculated to be 124 6 KJ/mol -1. The prepolymer containing azo end group can be obtained from the polymerization of monomer

such as acrylonitrile(AN)

acrylamide(AAM) using Ce (IV)ion and ACPMA as a redox initiator.The p-methylphenylaminocarbamoyl group would react with Ce(IV)ion to form a nitrogen center radical to initiate monomer polymerization and the azo group is reserved.When the prepolymer obtained was mixed with methyl methacrylate (MMA) in DMF reacted at 65℃

the decomposition of azo group took place and resulting macromolecular carbon center radical would initiate MMA to block copolymerization.The purified block copolymers were characterized by IR analysis.

关键词

多功能引发剂４４’-偶氮二（４-氰基戊酰对甲苯胺）自由基嵌段共聚合

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