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Equilibrium Melting Temperature of Poly(ferrocenyl dimethylsilane) in Homopolymers and Lamellar Diblock Copolymers with Polystyrene
Author(s) -
Xu Jianjun,
Bellas Vasilios,
Jungnickel Bernd,
Stühn Bernd,
Rehahn Matthias
Publication year - 2010
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200900718
Subject(s) - dimethylsilane , copolymer , lamellar structure , polymer chemistry , polystyrene , materials science , crystallization , melting temperature , melting point , chemical engineering , polymer , composite material , engineering
The equilibrium melting temperature, T m,0 , of poly(ferrocenyl dimethylsilane) (PFDMS) is re‐investigated using two PFDMS homopolymers and a PS‐ b ‐PFDMS copolymer (PS: polystyrene). The melting temperatures of samples crystallized at different crystallization temperatures, T c , were found to depend in a nonlinear fashion on T c . Consequently, the Hoffmann–Weeks approach fails in determining T m,0 . The more reliable Gibbs–Thomson approach results in a T m,0 = (215 ± 11) °C for the PFDMS homopolymers, and a T m,0 = (179 ± 5) °C for the PFDMS microphases in the lamellar PS‐ b ‐PFDMS diblock copolymer.