POLYMERIZATION OF STYRENE BY DIPHENYLZINC-ADDITIVE SYSTEMS .3. PH(2)ZN-ZNCL2 AND PH(2)ZN-CUCL2 SYSTEMS

Authors
RABAGLIATI FM TERRAZA CA AYAL HA
Citation
Fm. Rabagliati et al., POLYMERIZATION OF STYRENE BY DIPHENYLZINC-ADDITIVE SYSTEMS .3. PH(2)ZN-ZNCL2 AND PH(2)ZN-CUCL2 SYSTEMS, Boletin de la Sociedad Chilena de Quimica, 40(3), 1995, pp. 241-245
Citations number
11
Categorie Soggetti
Chemistry
Journal title
Boletin de la Sociedad Chilena de Quimica → ACNP
ISSN journal
03661644
Volume
40
Issue
3
Year of publication
1995
Pages
241 - 245
Database
ISI
SICI code
0366-1644(1995)40:3<241:POSBDS>2.0.ZU;2-3
Abstract
The present paper reports the polymerization of styrene using diphenyl zinc-zinc dichloride, Ph(2)Zn-ZnCl2, and diphenylzinc-copper dichlorid e, Ph(2)Zn-CuCl2 systems. Our results indicate that additives, accordi ng both to their nature and their molar ratio additive/Ph(2)Zn, are de terminant regarding conversion to polymer. These systems generate at l east two types of active species with bimodal molecular weight distrib utions. The obtained polystyrene, PSt, were mostly atactic but the one s obtained with Ph(2)Zn-ZnCl2 systems showed a melting temperature sig nal at region over than 230 degrees C suggesting the presence of a por tion of syndiotactic PSt.