CHARACTERIZATION OF POLY(N-VINYLCARBAZOLE) OBTAINED VIA ASYMMETRICAL POLYMERIZATION

Authors
CHEN CF SU Q LIU WH CHEN YM XI F
Citation
Cf. Chen et al., CHARACTERIZATION OF POLY(N-VINYLCARBAZOLE) OBTAINED VIA ASYMMETRICAL POLYMERIZATION, Journal of macromolecular science. Pure and applied chemistry, A34(4), 1997, pp. 655-663
Citations number
30
Categorie Soggetti
Polymer Sciences
Journal title
Journal of macromolecular science. Pure and applied chemistry → ACNP
ISSN journal
10601325
Volume
A34
Issue
4
Year of publication
1997
Pages
655 - 663
Database
ISI
SICI code
1060-1325(1997)A34:4<655:COPOVA>2.0.ZU;2-B
Abstract
The characterizations of poly(N-vinylcarbazole) (PVCZ) obtained via as ymmetrical polymerization have been studied by using H-1-NMR spectrum, UV spectrum, DSC, and GPC analysis. The tacticities, i.e., the isotac tic diad mole fractions, were found to increase when using the initiat or AIBN to the catalyst (-)Sp(+)(+)CSA(*-), and the extinction coeffi cients to decrease. Bimodal molecular weight distribution (MWD)s were caused by two propagating species of the free ions and the ion-pairs d uring the polymerization process.