ISSN:
0449-2951
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The photoelastic properties of tightly crosslinked networks formed from expoxy resins were investigated in the rubbery and in the glassy states. The following resins were used: bisphenol-diepoxy, resorcinol-diepoxy, and trisphenol-triepoxy resins. The anisotropy Δa of the links, the degree of crosslinking N, and the rigidity of the network were varied independently and the variation of the stress-optical constant with these parameters measured at different temperatures. The results indicate the strong influence of a parameter g depending upon the interactions between the links of the network. g and Δa contribute to the value of the stress-optical constant in opposite directions and can partially compensate each other. If this parameter is introduced in order to account for the interchain interactions, the theory of rubber photoelasticity can account qualitatively for the photoelastic behavior of these networks.
Additional Material:
12 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1964.100020215
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