Investigation of 1,3,5-tris(2-metoxypropane)benzene/BCl3 initiated living isobutylene polymerization by C13 and B11 NMR spectroscopy

M. Zsuga, Lajos Balogh, Tibor Kelen, J. Borbély

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The living carbocationic polymerization of isobutylene initiated by 1,3,5-tris(2-methoxypropane) benzene (TriCumOMe)/BCl3 system was investigated by C13 and B11 NMR spectroscopy. The reaction between the TriCumOMe and BCl3 at-30°C in CH2Cl2 after 15 mins reaction time resulted in 1,3,5-tris(2-chloropropane) benzene (TriCumCl) and methyl-dichloroboronite (BCl2OMe). The same system in the presence of isobutylene yielded three-arm star, chlorine terminated telechelic polyisobutylene and BCl2OMe. No counterions, i.e., BCl3OMe{circled dash}, BCl4{circled dash}, or neutral boron complexes, e.g., TriCumOMe, 3BCl3 could be detected. The simultaneous measurement of static permittivity (direct monitoring method) showed different reaction rate patterns in the case of AMI method, and when the TriCumOMe+BCl3 mixture was aged and the polymerization was started by isobutylene.

Original languageEnglish
Pages (from-to)335-340
Number of pages6
JournalPolymer Bulletin
Volume23
Issue number3
DOIs
Publication statusPublished - Mar 1990

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Living polymerization
butenes
Benzene
Nuclear magnetic resonance spectroscopy
polymerization
benzene
nuclear magnetic resonance
Chlorine
polyisobutylene
spectroscopy
Reaction rates
Stars
Boron
Permittivity
Polymerization
reaction time
chlorine
Monitoring
boron
reaction kinetics

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Investigation of 1,3,5-tris(2-metoxypropane)benzene/BCl3 initiated living isobutylene polymerization by C13 and B11 NMR spectroscopy. / Zsuga, M.; Balogh, Lajos; Kelen, Tibor; Borbély, J.

In: Polymer Bulletin, Vol. 23, No. 3, 03.1990, p. 335-340.

Research output: Contribution to journalArticle

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abstract = "The living carbocationic polymerization of isobutylene initiated by 1,3,5-tris(2-methoxypropane) benzene (TriCumOMe)/BCl3 system was investigated by C13 and B11 NMR spectroscopy. The reaction between the TriCumOMe and BCl3 at-30°C in CH2Cl2 after 15 mins reaction time resulted in 1,3,5-tris(2-chloropropane) benzene (TriCumCl) and methyl-dichloroboronite (BCl2OMe). The same system in the presence of isobutylene yielded three-arm star, chlorine terminated telechelic polyisobutylene and BCl2OMe. No counterions, i.e., BCl3OMe{circled dash}, BCl4{circled dash}, or neutral boron complexes, e.g., TriCumOMe, 3BCl3 could be detected. The simultaneous measurement of static permittivity (direct monitoring method) showed different reaction rate patterns in the case of AMI method, and when the TriCumOMe+BCl3 mixture was aged and the polymerization was started by isobutylene.",
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