Copolymerization of the lithium salt of 2-acrylamido-2-methylpropanesulfonic acid with N-vinylpyrrolidinone. Effect of ionic strength

被引：0

作者：

Kurenkov, V.F. ^{[1
]}

Zajtseva, O.A. ^{[1
]}

Karyagina, S.V. ^{[1
]}

机构：

[1] Kazan State Technological Univ., ul. Karla Marksa 68, Kazan', Tatarstan, 420015, Russia

来源：

Vysokomolekularnye Soedineniya. Ser.A Ser.B Ser.C - Kratkie Soobshcheniya | 2002年 / 44卷 / 02期

关键词：

Acrylic monomers - Electrostatics - Free radical polymerization - Ionic strength - Lithium compounds - pH - Rate constants - Reaction kinetics - Solutions;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The kinetics of free-radical copolymerization of the lithium salt of 2-acrylamido-2-methylpropanesulfonic acid (M1) with N-vinylpyrrolidinone (M2) in water and the aqueous solutions of Li2CO3 at pH 9 and 50°C were studied. The reaction rate and the molecular masses of the produced copolymers increase as the concentrations of M1 and M2 rise and pass through a maximum as a function of the monomer mixture composition. The effective rate constant increases as the ionic strength μ of solution grows but does not change at μ1/2 greater than unity. The results were interpreted taking into account the state of the ionogenic groups of monomer M1 and of the growing chains in the course of copolymerization, as well as the specificity of electrostatic interactions between reacting particles under the conditions studied.

引用

页码：226 / 232