期刊
REACTIVE & FUNCTIONAL POLYMERS
卷 71, 期 11, 页码 1096-1101出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.reactfunctpolym.2011.08.009
关键词
Ring-opening metathesis polymerization (ROMP); Polycyclooctene (PCOE); Polynorbornene (PNBE) derivative; Polyhedral oligomeric silsesquioxanes (POSS); Shape memory polymer (SMP)
资金
- National Natural Science Foundation of China [21074036, 50973030]
- Shanghai Municipality Commission [0852nm03200]
- Open Foundation of East China Normal University
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. (C) 2011 Elsevier Ltd. All rights reserved.
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