Polymerisation of diethylene glycol bis-allyl carbonate up to high degrees of conversion

Hill D.J.T., O'Donnell J.H., Perera M.C.S. and Pomery P.J. (1997) Polymerisation of diethylene glycol bis-allyl carbonate up to high degrees of conversion. European Polymer Journal, 33 5: 649-658.

Author Hill D.J.T.
O'Donnell J.H.
Perera M.C.S.
Pomery P.J.
Title Polymerisation of diethylene glycol bis-allyl carbonate up to high degrees of conversion
Journal name European Polymer Journal   Check publisher's open access policy
ISSN 0014-3057
Publication date 1997
Sub-type Article (original research)
Volume 33
Issue 5
Start page 649
End page 658
Total pages 10
Subject 1605 Policy and Administration
2507 Polymers and Plastics
Abstract The polymerisation of diethylene glycolbis-allyl carbonate to high conversion was investigated by ESR, FTIR and DMA techniques. The ESR spectrum was simulated using a two line, a three line and a broad line spectral component. These spectral components were assigned to the propagating radical, a mobile allyl radical and a less mobile allyl radical formed on a crosslink. The change in the resonance frequency of the ESR cavity during polymerisation was demonstrated to be sensitive to gel formation. ESR and FTIR data show that the restriction in the mobility of the system occurred well after gel formation making this system different from the vinyl systems. The ESR and FTIR data were used to calculate the rate constants for propagation, termination, transfer and reinitiation at high conversion. The chain transfer constant was not found to change with conversion. The DMA data shows that the extent of cyclisation during the polymerisation is about 20-25%.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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