Copolymerization of vinyl chloride with sulphur dioxide-I molecular association between vinyl chloride and sulphur dioxide

Cais R.E. and O'Donnell J.H. (1975) Copolymerization of vinyl chloride with sulphur dioxide-I molecular association between vinyl chloride and sulphur dioxide. European Polymer Journal, 11 11: 749-754. doi:10.1016/0014-3057(75)90111-1


Author Cais R.E.
O'Donnell J.H.
Title Copolymerization of vinyl chloride with sulphur dioxide-I molecular association between vinyl chloride and sulphur dioxide
Journal name European Polymer Journal   Check publisher's open access policy
ISSN 0014-3057
Publication date 1975-01-01
Sub-type Article (original research)
DOI 10.1016/0014-3057(75)90111-1
Volume 11
Issue 11
Start page 749
End page 754
Total pages 6
Subject 1605 Policy and Administration
2507 Polymers and Plastics
Abstract The formation of VC-SO2 and VC-(SO2)2 complexes in liquid mixtures of vinyl chloride (VC) and sulphur dioxide has been shown by (a) the freezing point composition diagram and (b) chemical shifts in the PMR spectrum of VC over the complete composition range. It is postulated that SO2 can associate with the CC bond and the Cl atom. These complexes may be involved in the copolymerization and influence the composition and stereochemistry of the product. PMR spectra of VC-SO2-ethane(E) mixtures with [SO2] ≫ [E] ≥ [VC] gave Kv = 2·0 ± 0·5, 1·5 ± 0·1 and 1·1 ± 0·3 at 232·6, 272·6 and 301·3 K with ΔHf 0Hf = -6·6 ± 1·4 kJ mol-1 for the VC -(SO2)2 complex. The chemical shift of the trans β-proton was twice that of the other two protons. indicating that SO2 adopts an asymmetric orientation to the double bond.
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 13 Sep 2016, 14:14:54 EST by System User