Reaction Kinetics Analyses of Amine-Cured Epoxies: First Shell Substitution Effects

Kinetic reaction theory was used to model first shell substitution effects for several amine-cured epoxy resins, subject to the constraint of intermolecular reactions. Moment analysis will allow numerical simulations to be extended beyond the gel point. Functionalities for several chemical moieties...

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Bibliographic Details
Published inMacromolecules Vol. 27; no. 8; pp. 2045 - 2053
Main Authors Noureddini, H., Zhang, C.-Q., Timm, D. C.
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 01.04.1994
Subjects
Applied sciences
Chemical properties
Exact sciences and technology
Polymer industry, paints, wood
Properties and testing
Technology of polymers
Epoxy resin
Diamine
Kinetic model
Experimental test
Curing(plastics)
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Summary:Kinetic reaction theory was used to model first shell substitution effects for several amine-cured epoxy resins, subject to the constraint of intermolecular reactions. Moment analysis will allow numerical simulations to be extended beyond the gel point. Functionalities for several chemical moieties were correlated as a function of conversion. Simulations also incorporated population density distribution dynamics. Analyses of several oligomers clearly demonstrated the dependency of oligomeric weight fractions on first shell substitution effects and conversion. The ratio of rate constants for reactions of secondary amino hydrogens relative to reactions of primary amino hydrogens ranged from 0.5-1.2 for the resins analyzed.
Bibliography:ark:/67375/TPS-SX86SNS5-9
istex:84A81B22D03FCA03B65AF3943E8F30BCC62EC02A
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0024-9297
1520-5835
DOI:10.1021/ma00086a011