DSC monitoring of the cure kinetics of a castor oil-based polyurethane
Differential scanning calorimetry (DSC) has been used to monitor the reaction between castor oil and isophorone diisocyanate (IPDI), using a non-isothermal method, at different heating rates. The NCO/OH ratio in these systems was 1, so that the concentration of NCO and OH groups could be considered...
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Published in | Thermochimica acta Vol. 427; no. 1; pp. 31 - 36 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.03.2005
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | Differential scanning calorimetry (DSC) has been used to monitor the reaction between castor oil and isophorone diisocyanate (IPDI), using a non-isothermal method, at different heating rates. The NCO/OH ratio in these systems was 1, so that the concentration of NCO and OH groups could be considered equivalent during all the experiments. Despite the complexity of the system, in which different order kinetics are possible, as well as physically controlled diffusion processes, data were fitted to a simple kinetic model, of apparent order
n, apparent activation energy
E
A, and apparent frequency factor
A
0. The dependency of these parameters on heating rate was used to analyze kinetics of polymerization of these systems. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0040-6031 1872-762X |
DOI: | 10.1016/j.tca.2004.08.010 |