INVESTIGATION OF MECHANISM OF INITIATION OF POLYMERIZATION OF CYCLIC ACETALS BY PROTIC AND APROTIC ACIDS

被引：4

作者：

ROZENBERG, BA ^{[1
]}

KOMAROV, BA ^{[1
]}

PONOMARE.TI ^{[1
]}

ENIKOLOP.NS ^{[1
]}

机构：

[1] ACAD SCI USSR, CHEM PHYS INST, MOSCOW, USSR

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1973年 / 11卷 / 01期

关键词：

CHEMICAL REACTIONS - Reaction Kinetics - FLUORINE COMPOUNDS - POLYMERIZATION - Catalysts;

D O I：

10.1002/pol.1973.170110101

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The kinetics of polymerization of 1. 3-dioxolan and degradation of polydioxolan catalyzed by boron trifluoride etherate have been studied in methylene chloride solution. The S-shape kinetic curves is found to be due to the autocatalytic action of the macromolecules formed. Effective participation of macromolecules in the initiation process has been confirmed on the basis of the relationship of the rate constants of boron trifluoride etherate reactions with cyclic monomer and with the polymer chain as well as by the decrease of the induction period on addition of the polymer or its low molecular weight analog, methylal, to the polymerization system.

引用

页码：1 / 5

页数：5