乙烯系单体自由基聚合的阻聚效应研究 Ⅺ.羟胺类化合物对醋酸乙烯酯和丙烯腈自由基聚合的影响及链转移常数的测定

张自义; 李兆陇; 拜延龙; 吕志珍

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乙烯系单体自由基聚合的阻聚效应研究 Ⅺ.羟胺类化合物对醋酸乙烯酯和丙烯腈自由基聚合的影响及链转移常数的测定

研究简报 | 更新时间：2021-03-19

- 乙烯系单体自由基聚合的阻聚效应研究 Ⅺ.羟胺类化合物对醋酸乙烯酯和丙烯腈自由基聚合的影响及链转移常数的测定
- INHIBITING EFFECT OF RADICAL POLYMERIZATION FOR VINYL MONOMERS XI.Studies on the Inhibition and Their Chain Transfer Constants of Substituted Hydroxylamine Compounds in Bulk Polymerization of Vinyl Acetate and Acrylonitrile
- 高分子学报 1990年第2期页码：239-243
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- 纸质出版日期：1990-4-20，
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张自义, 李兆陇, 拜延龙, 吕志珍. 乙烯系单体自由基聚合的阻聚效应研究 Ⅺ.羟胺类化合物对醋酸乙烯酯和丙烯腈自由基聚合的影响及链转移常数的测定[J]. 高分子学报, 1990,(2):239-243.

Zhang Zi-yi, LI Zhao-long, BAI Yan-long, LU Zhi-zhen. INHIBITING EFFECT OF RADICAL POLYMERIZATION FOR VINYL MONOMERS XI.Studies on the Inhibition and Their Chain Transfer Constants of Substituted Hydroxylamine Compounds in Bulk Polymerization of Vinyl Acetate and Acrylonitrile[J]. Acta Polymerica Sinica, 1990,(2):239-243.
张自义, 李兆陇, 拜延龙, 吕志珍. 乙烯系单体自由基聚合的阻聚效应研究 Ⅺ.羟胺类化合物对醋酸乙烯酯和丙烯腈自由基聚合的影响及链转移常数的测定[J]. 高分子学报, 1990,(2):239-243. DOI：

Zhang Zi-yi, LI Zhao-long, BAI Yan-long, LU Zhi-zhen. INHIBITING EFFECT OF RADICAL POLYMERIZATION FOR VINYL MONOMERS XI.Studies on the Inhibition and Their Chain Transfer Constants of Substituted Hydroxylamine Compounds in Bulk Polymerization of Vinyl Acetate and Acrylonitrile[J]. Acta Polymerica Sinica, 1990,(2):239-243. DOI：

摘要

Abstract

The effects of the addition of 2.38×10-2 to 2.86×10-2 M AIBN and 8.8×10-2 to 6.1×10-4 M six substituted hydroxylamines

such as

N-diethlhydroxylamine (DEHA)

N'-diisopro-pylhydroxylamine (DIPHA)

N-hydroxyl-mofpholine ; (MPHA)

6-tetramethyl-4-hydro xyl-piperidinehydroxylamine (TMHPHA)

N-phenylhydroxylamine (PHA) and N

N'-diph-enylhydroxyamine (DPHA) at 60℃ on the bulk polymerization of vinyl acetate (VAC) and .acrylonitrile (AN) has been studied respectively. The results showed that all six hydroxyla-mines exhibited inhibiting properties. The effect is more pronounced for VAC than for AN. At the sametime the chain transfer constants (Cs) of these compounds in bulk polymerization of VAC and AN has been calculated respectively by Mayo equation. The result demonstrated that the Cs value for VAC in bulk polymerization is larger than that of AN under same condition. These differences not only depend on the structure of six hydroxylamines and the nitroxide ra-dical derved from them in reaction

but also on the electron-donating or electronaccepting pro-perties of monomers used and radicals formed.

关键词

自由基聚合阻聚效应取代羟胺链转移常数醋酸乙烯酯丙烯腈

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