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Study on poly( ε ‐caprolactone)‐based shape memory copolymer fiber prepared by bulk polymerization and melt spinning
Author(s) -
Meng Qinghao,
Hu Jinlian
Publication year - 2008
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.985
Subject(s) - materials science , shape memory alloy , differential scanning calorimetry , composite material , melt spinning , caprolactone , fiber , spinning , dynamic mechanical analysis , polyurethane , copolymer , polymerization , ultimate tensile strength , shape memory polymer , glass transition , polymer , thermodynamics , physics
In this paper, a poly( ε ‐caprolactone) (PCL)‐based shape memory polyurethane fiber was prepared by melt spinning. The shape memory switching temperature was the melting transition temperature of the soft segment phase mainly composed of PCL at 47°C. The mechanical properties especially shape memory effect were explicitly characterized by thermomechanical cyclic tensile testing. The results suggest that the prepared fiber has shape memory effects. The prepared 40 denier shape memory fiber had a tenacity of about 1.0 cN/dtex, and strain at break 562–660%. The shape fixity ratio reached 84% and the recovery ratio reached 95% under drawing at high temperature and thermal recovery testing. 1 Finally, the fiber thermal/mechanical properties were measured using differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). Copyright © 2007 John Wiley & Sons, Ltd.