Some aspects of the living isobutylene polymerization

Tibor Kelen, Tibor Kelen, Lajos Balogh, Istvan Majoros, G. Deák

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The possibilities of increasing the livingness in cationic isobutylene polymerizations has been investigated. It has been assumed that the living chain‐end is polarized but non‐dissociated and relatively stable, therefore, i) shifting of the dissociation equilibrium by adding salts with common or non‐common anion in excess, and ii) increasing of the stability of the chain‐end by complexing it with electrondonors, may increase the livingness of the system. Indeed, the addition of n‐Bu4NCl or n‐Bu4NI to systems with BCl3 or TiCl4 coinitiators, as well as the addition of dimethyl sulphoxide as electrondonor in a broad concentration range, improved the living character. The possibility of complexation of the chain‐end by the monomer has also been supported

Original languageEnglish
Pages (from-to)325-338
Number of pages14
JournalMacromolecular Symposia
Volume67
Issue number1
DOIs
Publication statusPublished - 1993

Fingerprint

Cationic polymerization
Living polymerization
Dimethyl sulfoxide
butenes
Dimethyl Sulfoxide
Complexation
Anions
Negative ions
polymerization
Salts
Monomers
monomers
dissociation
anions
salts
titanium tetrachloride
isobutylene

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Some aspects of the living isobutylene polymerization. / Kelen, Tibor; Kelen, Tibor; Balogh, Lajos; Majoros, Istvan; Deák, G.

In: Macromolecular Symposia, Vol. 67, No. 1, 1993, p. 325-338.

Research output: Contribution to journalArticle

Kelen, Tibor ; Kelen, Tibor ; Balogh, Lajos ; Majoros, Istvan ; Deák, G. / Some aspects of the living isobutylene polymerization. In: Macromolecular Symposia. 1993 ; Vol. 67, No. 1. pp. 325-338.
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