Characterization of shape memory behaviour of CTBN-epoxy resin system

Kavitha, and Revathi, A and Sandhya, Rao and Shylaja, Srihari and Dayananda, GN (2012) Characterization of shape memory behaviour of CTBN-epoxy resin system. J of Polymer Research, 19 (9894).

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    Abstract

    Novel epoxy based shape memory polymers (SMPs) were prepared by blending bifunctional epoxy resin with varying content (0, 5, 10 and 15 wt %) of Carboxyl-Terminated Butadiene Acrylonitrile (CTBN) rubber and cured with a cyclo-aliphatic amine hardener. The epoxy/CTBN blends were chemically characterized by epoxy content and gel time measurements. Neat resin castings were prepared for conducting shape memory tests. The glass transition temperature (Tg) of the test sample was measured in order to fix the deformation temperature (Ttrans). Shape memory (SM) cyclic tests were conducted on both unmodified and CTBN modified epoxy samples in order to comparatively assess their SM behavior. Compared to unmodified epoxy SMPs, the CTBN modified epoxy SMPs exhibited a significant increase in the number of SM cycles, which is attributed to the toughening effect of the CTBN phase.

    Item Type: Journal Article
    Uncontrolled Keywords: Epoxy, CTBN, Shapememory, Glass transition temperature, Shape recovery
    Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
    Division/Department: CSMST, CSMST, CSMST, CSMST, CSMST
    Depositing User: Dr. Sandhya Rao
    Date Deposited: 28 Jun 2012 09:51
    Last Modified: 26 Sep 2012 09:47
    URI: http://nal-ir.nal.res.in/id/eprint/10491

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