๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Kinetics and mechanism of the cationic polymerization of trioxane. I. Crystallization during polymerization

โœ Scribed by Yeong-Tarng Shieh; Show-An Chen

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
208 KB
Volume
37
Category
Article
ISSN
0887-624X

No coin nor oath required. For personal study only.

โœฆ Synopsis

Cationic polymerizations of trioxane in 1,2-ethylene dichloride and benzene were heterogeneous and reversible. Phase separation accompanying with crystallization occurred during the polymerization. Three morphological changes were found in the course of the polymerization as were investigated by dilatometry and precipitation method. Based on the findings of morphological changes and three reversible processes for the polymerization, a rate equation was proposed to describe the polymerization. The proposed rate equation was fairly good in describing the experimental data, and kinetics constants including K p , K d , K p ะˆ, K d ะˆ, M l eq , M s eq , and K dis /K cr for the polymerization at 30, 40, and 50ยฐC in 1,2-ethylene dichloride and benzene were obtained. Factors that affected the kinetics constants were discussed.

๐Ÿ“œ SIMILAR VOLUMES

Kinetics and mechanism of the cationic p
Kinetics and mechanism of the cationic polymerization of trioxane. II. Consideration of hydride transfer
โœ Yeong-Tarng Shieh; Mao-Jung Yeh; Show-An Chen ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 149 KB ๐Ÿ‘ 1 views

The occurrence of hydride-transfer reactions during the cationic polymerization of trioxane was demonstrated, and rate constants were obtained. The donor of hydride ions in the transfer reactions was the monomer. The hydride-transfer reaction was a first-order reaction with respect to the concentrat

Elucidation of the miniemulsion stabiliz
Elucidation of the miniemulsion stabilization mechanism and polymerization kinetics
โœ Christopher D. Anderson; E. David Sudol; Mohamed S. El-Aasser ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 106 KB ๐Ÿ‘ 1 views

## Abstract Styrene/hexadecane miniemulsions were polymerized at 50ยฐC using a redox initiator. The miniemulsions and their corresponding latexes were characterized in terms of size, polymerization rate, and surface properties. The resulting data were analyzed to elucidate the miniemulsion stabiliza