NDLI: Thermal behavior of blends based on a thermoplastic-modified epoxy resin with a crosslinking density variation

Content Provider	Springer Nature Link
Author	Rico, Maite López, Joaquín Bouza, Rebeca Bellas, Rosa
Copyright Year	2011
Abstract	The thermal behavior of blends based on a polystyrene (PS) and several epoxy-amine systems where amino groups were provided by a monoamine (MA) and a diamine (DA) mixed in different proportions was investigated. This way, the crosslinking density of epoxy-amine polymer was controlled and continuously changed from a linear polymer (epoxy-MA) to a highly crosslinked polymer (epoxy-DA). The effect of the MA–DA proportion and PS modifier on the thermal stability, glass transition, and polymerization reaction was studied by differential scanning calorimetry and thermogravimetric analysis. The MA–DA ratio and modifier proportion did not affect the reaction heat but affected the reactivity. The thermal stability and glass transition temperature increased by increasing the DA proportion in the blend as a result of the higher degree of crosslinking. A study of miscibility of blends based on glass transitions was performed. The thermoplastic-modified materials generally showed two glass transitions with values close to the those of the pure materials, indicating that the mixtures were separated into phases.
Starting Page	599
Ending Page	606
Page Count	8
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	105
Issue Number	2
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-03-06
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Thermoplastic/thermoset blends Thermal stability Glass transition temperature Polymerization reaction Miscibility Analytical Chemistry Physical Chemistry Inorganic Chemistry Measurement Science and Instrumentation Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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