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Crystallization of Polystyrene‐ block ‐[Syndiotactic Poly(propylene)] Block Copolymers from Confinement to Breakout
Author(s) -
Ho RongMing,
Chung TsaiMing,
Tsai JingCherng,
Kuo JingChang,
Hsiao Benjamin S.,
Sics Igors
Publication year - 2005
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200400467
Subject(s) - materials science , crystallization , copolymer , polystyrene , small angle x ray scattering , tacticity , isothermal process , morphology (biology) , polymer chemistry , chemical engineering , crystallography , composite material , polymer , optics , scattering , chemistry , polymerization , physics , engineering , genetics , biology , thermodynamics
Summary: Various crystalline textures have been identified in a crystallizable block copolymer system, polystyrene‐ block ‐[syndiotactic poly(propylene)] (PS‐sPP), having a glass‐transition temperature of PS ( T g,PS ) located in the midst of the sPP crystallization window. A confined morphology for the crystallization of sPP was observed while the crystallization temperature of sPP ( T c,sPP ) was less than T g,PS . A further increase in T c,sPP could lead to a breakout in nanostructure. This study revealed the T g effect on crystallization‐induced morphological changes of block copolymers from confinement to breakout.TEM images and one‐dimensional SAXS profiles of PS‐sPP isothermally crystallized at T ODT > T g,PS > T c,sPP (top) and T ODT > T c,sPP > T g,PS (bottom).
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