Journal
REACTIVE & FUNCTIONAL POLYMERS
Volume 73, Issue 2, Pages 421-430Publisher
ELSEVIER
DOI: 10.1016/j.reactfunctpolym.2012.06.009
Keywords
Shape memory polymers; Switching temperature; Epoxy resin; Elastic memory composite; Shape memory foam
Funding
- Council for Scientific and Industrial Research (CSIR), India
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This review analyses the progress in the field of shape memory epoxy resins (SMEPs). Partial crystallisation and vitrification are the basis of shape memory effect in SMEPs. Several synthetic approaches for SMEPs, their composites and foams have been reviewed. Strategically incorporated thermally reversible segments induce the shape memory effect in epoxy resins. By varying the nature and concentration of shape memory segments, wide range of shape memory properties and transition temperatures (shape memory temperatures) can be achieved. Triple shape memory, self-healability and electroactive capability are some of the additional features that can be created in SMEPs. Among the thermoset resins, shape memory epoxies are the most attractive systems because of the ease of processability, composite forming properties and dimensional stability. Shape memory epoxy polymers that can be processed into elastic memory composites are candidate materials in the processing of many smart engineering systems. In this background, a review consolidating the progress in SMEP has contemporary relevance. The present article takes a stock of the trend in SMEP with a view to assess the direction of future initiatives in this area. It is concluded that there is tremendous scope for research leading to technological evolution in the field of SMEP. (C) 2012 Elsevier Ltd. All rights reserved.
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