Thermal properties of ruthenium alkylidene-polymerized dicyclopentadiene

Thermal properties of ruthenium alkylidene-polymerized dicyclopentadiene

Differential scanning calorimetry (DSC) analysis of ring opening methatesis polymerization (ROMP) derived polydicyclopentadiene (PDCPD) revealed an unexpected thermal behavior. A recurring exothermic signal can be observed in the DSC analysis after an elapsed time period. This exothermic signal was...

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Bibliographic Details
Main Authors: Yuval Vidavsky, Yotam Navon, Yakov Ginzburg, Moshe Gottlieb, N. Gabriel Lemcoff
Format: Article
Language:English
Published: Beilstein-Institut 2015-08-01
Series:Beilstein Journal of Organic Chemistry
Subjects:
glass-transition temperature
polydicyclopentadiene
ring opening metathesis polymerization
ruthenium-catalyzed olefin metathesis
thermoset polymers
Online Access:https://doi.org/10.3762/bjoc.11.159
Description
Summary:Differential scanning calorimetry (DSC) analysis of ring opening methatesis polymerization (ROMP) derived polydicyclopentadiene (PDCPD) revealed an unexpected thermal behavior. A recurring exothermic signal can be observed in the DSC analysis after an elapsed time period. This exothermic signal was found to be proportional to the resting period and was accompanied by a constant increase in the glass-transition temperature. We hypothesize that a relaxation mechanism within the cross-linked scaffold, together with a long-lived stable ruthenium alkylidene species are responsible for the observed phenomenon.
ISSN:1860-5397

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