POSS-enhanced shape-memory copolymer of polynorbornene derivate and polycyclooctene through ring-opening metathesis polymerization

Autor:	Jisen Jiang, Chi Zeng, Meiran Xie, Dan Yang, Danyi Gao
Rok vydání:	2011
Předmět:	Materials science Polymers and Plastics General Chemical Engineering General Chemistry Shape-memory alloy Metathesis Grafting Biochemistry Thermogravimetry Polymerization Polymer chemistry Materials Chemistry Copolymer Side chain Environmental Chemistry Ring-opening metathesis polymerisation
Zdroj:	Reactive and Functional Polymers. 71:1096-1101
ISSN:	1381-5148
DOI:	10.1016/j.reactfunctpolym.2011.08.009
Popis:	A copolymer consisting of polycyclooctene (PCOE) and poly(5-norbornene-exo,exo-2,3-dicarboxylic anhydride) (PNBEDCA) was firstly synthesized through ring-opening metathesis polymerization, and then the obtained copolymer P(COE-co-NBEDCA) was readily modified by grafting reaction of NBEDCA units with polyhedral oligomeric silsesquioxanes (POSS) to afford a novel functionalized copolymer P(COE-co-NBEDCA-g-POSS), in which carboxyl and POSS as side chains attached to polynorbornene backbones. The copolymers were characterized by means of thermogravimetry, wide-angle X-ray diffraction, and stress–strain measurements. The shape memory effect of the copolymer was evaluated by dynamical mechanical analysis and shape recovery speed. Having the properties of the good shape fixity and the large shape recovery, the POSS-enhanced copolymer is expected to use as a potential shape memory material.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b35ed2107acfb2bc8e03aa66aa08cccb https://doi.org/10.1016/j.reactfunctpolym.2011.08.009 Zobrazit plný text záznamu Full Text from ScienceDirect