Shape Memory Polymers Based on Polyhedral Oligomeric Silsesquioxane Grafted with Poly(ethylene glycol)s

Content Provider	Semantic Scholar
Author	Park, Haneum Chae, Jeongwan Sang, Jeong-Seon Oh, Kyung Wha Park, Juhyun
Copyright Year	2019
Abstract	Shape memory polymers that can be contracted or expanded on external environmental stimulus such as temperature or pH variation have been one of the most important materials for biomedical or smart fiber applications. In this study, we prepared polymers that presented shape memory characteristics at a low temperature by introducing a poly(ethylene glycol) (PEG400) with a melting temperature of 4 C into the structure units of the polymers. We first synthesized polyhedral oligomeric silsesquioxane (POSS) grafted with PEG400, followed by cross-linking reaction with a linear polyurethane that had diisocyanates at both chain ends and structure units of PEG400. The resulting network polymer presented a shape memory effect at its glass transition temperature around the melting point of PEG400 as confirmed by dynamic mechanical analysis.
Starting Page	106
Ending Page	112
Page Count	7
File Format	PDF HTM / HTML
DOI	10.7317/pk.2019.43.1.106
Volume Number	43
Alternate Webpage(s)	https://www.cheric.org/PDF/PK/PK43/PK43-1-0106.pdf
Alternate Webpage(s)	https://doi.org/10.7317/pk.2019.43.1.106
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article