Acidolysis of Poly(4-Methyl-1,3-Dioxolane).
MASSACHUSETTS UNIV AMHERST DEPT OF POLYMER SCIENCE AND ENGINEERING
Pagination or Media Count:
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.
- Polymer Chemistry