J. Inst. Eng. India Ser. D https://doi.org/10.1007/s40033-018-0158-3 ORIGINAL CONTRIBUTION Effect of Chemistry and Process Parameters on Shape Recovery Behaviour of Shape Memory Epoxies in Flexure 1 2 1 . . Kavitha V. Rao G. S. Ananthapadmanabha G. N. Dayananda Received: 11 January 2018 / Accepted: 2 April 2018 The Institution of Engineers (India) 2018 Abstract Epoxy based Shape Memory Polymers (SMEPs) Introduction of varying crosslinking densities were prepared by reacting an aromatic epoxy resin, Diglycidyl Ether of Bisphenol A Shape memory polymers (SMPs) are smart materials that (DGEBA) with different aliphatic amines varying in chain have the ability to remember their permanent shape and in lengths, triethylenetetramine (TETA), 2,2 ethylenedioxy- the process recover large strains imposed on them by the bisethylamine (EDEA) and 4,7,10-Trioxa-1, 13-Tride- application of external stimuli, such as temperature and canediamine (TTD). Shape memory tests were conducted pressure [1–3]. In general, an SMP sample is strained at for all three SMEPs by deforming the samples at temper- higher temperatures ([ T ), cooling it to below its T with g g atures greater than their T in ﬂexure (3 point bending). the constraint ﬁxes the temporary shape and ﬁnally original The effect of crosslinking density (CLD),
Journal of The Institution of Engineers (India): Series D – Springer Journals
Published: Jun 1, 2018
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