STUDY ON THE POLYMERIZATION OF ACRYLONITRILE INITIATED BY "CAGE" VANADYL(IV) POLY (OXIME- IMIDODIACETATE)-THIOUREA SYSTEM

WU Jin-yuan; YANG Yi-guang; YANG Chao-xiong

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STUDY ON THE POLYMERIZATION OF ACRYLONITRILE INITIATED BY "CAGE" VANADYL(IV) POLY (OXIME- IMIDODIACETATE)-THIOUREA SYSTEM

Research Article | 更新时间：2021-03-19

- STUDY ON THE POLYMERIZATION OF ACRYLONITRILE INITIATED BY "CAGE" VANADYL(IV) POLY (OXIME- IMIDODIACETATE)-THIOUREA SYSTEM
- Acta Polymerica Sinica Issue 4, Pages: 391-397(1992)
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- Published：20 August 1992，
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WU Jin-yuan, YANG Yi-guang, YANG Chao-xiong. STUDY ON THE POLYMERIZATION OF ACRYLONITRILE INITIATED BY "CAGE" VANADYL(IV) POLY (OXIME- IMIDODIACETATE)-THIOUREA SYSTEM. [J]. Acta Polymerica Sinica (4):391-397(1992)
DOI：

WU Jin-yuan, YANG Yi-guang, YANG Chao-xiong. STUDY ON THE POLYMERIZATION OF ACRYLONITRILE INITIATED BY "CAGE" VANADYL(IV) POLY (OXIME- IMIDODIACETATE)-THIOUREA SYSTEM. [J]. Acta Polymerica Sinica (4):391-397(1992) DOI：

摘要

研究了笼形聚肟偕亚氨二乙酸钒(CPV)-硫脲(TU)体系在硝酸溶液中引发丙烯腈(AN)聚合反应.表观聚合速度(RP)是 RP=1.0×108e(-10.500/RT)[AN]1.0[CPV]1.0[TU]1.5[HNO3]3.0 聚合诱导期(τ)随反应温度和物料浓度发生变化

可表示为 1/τ=5.2×109e-12.800/RT[AN]1.0[CPV]1.0[TU]1.5[HNO3]3.0实验结果表明

聚合反应以单基终止为特征

可能是和高分子载体较大的空间位阻有关.

Abstract

The polymerization of acrylonitrile (AN) in aqueous nitricacid initiated by "cage" vanadyl(IV) poly (oxime-imidodiacetate) (CPV)-thiourea (TU) system has been investigated. The overall rate of polymerization isRP = 10×108e-10.500 /RT[AN]1.0[CPV]1.0[TU]1.5[HNO3]3.0The length of the induction period (r) varies with the polymerization temperature and the substrate concentrations. It may be written as1/τ = 5.2×109e-12.800/RT[AN]1.0[CPV]1.0[TU]1.5[HNO3]3.0 These results suggests that the chain radicals are terminated via bimolecular reaction predomintately.Possibly

it is affected by the steric hindrance of the bulky polymer supporter.

关键词

笼形高分子负载催化剂聚肟谐氨羧合钒-硫脲引发体系丙烯腈聚合动力学

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