Accession Number:

ADA165205

Title:

Acidolysis of Poly(4-Methyl-1,3-Dioxolane).

Descriptive Note:

Technical rept.,

Corporate Author:

MASSACHUSETTS UNIV AMHERST DEPT OF POLYMER SCIENCE AND ENGINEERING

Report Date:

1986-01-10

Pagination or Media Count:

26.0

Abstract:

The onset of decomposition of poly4-methyl-1,3-dioxolane was lowered from 70 degs. by 0.1 weight p-toluene sulfuric acid to 170 degs. producing more than 81 yield of monomer. Protonation forms cyclic oxonium ion followed by depolymerization. Minor products are isomers of hydroxymethyl-2-hydroxyl-2-methyl ethyl ether and bis2-hydroxyl-2-methyl ethoxylmethane rearrangements of the oxonium ions. The first order rate constant of acidolysis of poly4-methyl-1,3-dioxolane is ca. 8.5 kcalmole which is much smaller than about 17 kcalmole for the acidolysis of poly1,3-dioxolane.

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE