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AuthorChilders, Christopher H.
AuthorHassan, Mohammad K.
AuthorMauritz, Kenneth A.
AuthorWiggins, Jeffrey S.
Available date2016-09-25T10:13:42Z
Publication Date2016-03
Publication NameArabian Journal of Chemistryen_US
Identifierhttp://dx.doi.org/10.1016/j.arabjc.2015.08.010
CitationChristopher H. Childers, Mohammad K. Hassan, Kenneth A. Mauritz, Jeffrey S. Wiggins, Molecular scale cure rate dependence of thermoset matrix polymers, Arabian Journal of Chemistry, Volume 9, Issue 2, March 2016, Pages 206-218.
ISSN18785352
URIhttp://www.sciencedirect.com/science/article/pii/S1878535215002506
URIhttp://hdl.handle.net/10576/4767
AbstractThis manuscript demonstrates the molecular scale cure rate dependence of di-functional epoxide based thermoset polymers cured with amines. A series of cure heating ramp rates were used to determine the influence of ramp rate on the glass transition temperature (Tg) and sub-Tg transitions and the average free volume hole size in these systems. The networks were comprised of 3,3′-diaminodiphenyl sulfone (33DDS) and diglycidyl ether of bisphenol F (DGEBF) and were cured at ramp rates ranging from 0.5 to 20°C/min. Differential scanning calorimetry (DSC) and NIR spectroscopy were used to explore the cure ramp rate dependence of the polymer network growth, whereas broadband dielectric spectroscopy (BDS) and free volume hole size measurements were used to interrogate networks’ molecular level structural variations upon curing at variable heating ramp rates. It was found that although the Tg of the polymer matrices was similar, the NIR and DSC measurements revealed a strong correlation for how these networks grow in relation to the cure heating ramp rate. The free volume analysis and BDS results for the cured samples suggest differences in the molecular architecture of the matrix polymers due to cure heating rate dependence.
SponsorQatar University’s Center for Advanced Materials’ Start-Up grant. AFOSR Award Number FA9550-13-1-0103; and Dr. Gregg Bogucki and Dr. Stephen Heinz from Boeing Research and Technology for their kind financial support and collaboration.
Languageen
PublisherElsevier B.V.
SubjectThermoset
SubjectCure heating ramp rate
SubjectNear infrared spectroscopy
SubjectDifferential scanning calorimetry
SubjectDielectric spectroscopy
SubjectPolymer network growth and architecture
TitleMolecular scale cure rate dependence of thermoset matrix polymers
TypeArticle
Pagination206-218
Issue Number2
Volume Number9
Open Access user License http://creativecommons.org/licenses/by-nc-nd/4.0/


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