화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.16, No.2, 256-260, March, 2010
DOI10.1016/j.jiec.2009.10.006  Export Citation
Preparation and characterization of shape memory polymer networks based on carboxylated telechelic poly(ε-caprolactone)/epoxidized natural rubber blends
Young-Wook Chang†, Joon-Phil Eom, Jae-Gu Kim, Hee-Taik Kim, and Dong-Kook Kim1
  • Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea
  • 1Department of Applied Chemistry, Hanyang University, Ansan 426-791, Republic of Korea
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Shape memory polymer networks were prepared from blends of end-carboxylated telechelic poly(ε-caprolactone) (XPCL) and epoxidized natural rubber (ENR). The XPCL/ENR blends can form cross linked structure via interchain reaction between the reactive groups of each polymer during molding at high temperature. Degree of crosslinking of the blend network and their thermomechanical properties were characterized by gel content measurement, DSC and DMA. We found that the degree of crosslinking and crystalline melting transition temperatures was dependent upon the blend compositions as well as the molecular weight of the XPCL segment in the blends. The blends showed a good shapememory behavior such as good shape fixity as well as a high final recovery rate when they exhibit crystalline melting transition with a sufficiently high degree of crosslinking. And the response temperature of the recovery was well matched with T(m) of the samples.
Keywords:End-carboxylated polycaprolactone;Epoxidized natural rubber;Self-vulcanizable blends;Shape memory behavior;Thermomechanical properties
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