Epoxy based Shape Memory Polymers (SMEPs) of varying crosslinking densities were prepared by reacting an aromatic epoxy resin, Diglycidyl Ether of Bisphenol A (DGEBA) with different aliphatic amines varying in chain lengths, triethylenetetramine (TETA), 2,2′ethylenedioxybisethylamine (EDEA) and 4,7,10-Trioxa-1, 13-Tridecanediamine (TTD). Shape memory tests were conducted for all three SMEPs by deforming the samples at temperatures greater than their Tg in flexure (3 point bending). The effect of crosslinking density (CLD), shape fixing temperature (Tfix) and shape recovery temperature (Trec) on shape memory behaviour of SMEPs were studied systematically. In terms of the chemical structure, the results showed that with the increase in CLD, glass transition temperature (Tg) increased with an associated reduction in the shape recovery behaviour. However, superior shape memory behaviour was observed for lower CLD SMEPs. With respect to the process parameters, as the Tfix was lowered below the Tg, % shape fixity increased and the recovery curves shifted towards higher temperature. When Trec was increased above the Tg, recovery rate increased.
Journal of The Institution of Engineers (India): Series D – Springer Journals
Published: Jun 1, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera