Premium
Melting and curie transition behavior of blends of vinylidenefluoride‐tetrafluoroethylene copolymer and polymethylmethacrylate
Author(s) -
Cho Jae Whan
Publication year - 1991
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990240308
Subject(s) - tetrafluoroethylene , curie temperature , materials science , miscibility , copolymer , differential scanning calorimetry , glass transition , polymer chemistry , curie , crystallization , polymer , thermodynamics , composite material , condensed matter physics , ferromagnetism , physics
Thermal properties were investigated using differential scanning calorimetry of blends of vinylidenefluoride‐tetrafluoroethylene (VDF‐TFE) copolymer and polymethylmethacrylate. Curie transition behavior was strongly dependent on the crystallization temperature. A Curie temperature was shown in pure VDF‐TFE copolymer and in the blend with 91 wt % VDF‐TFE copolymer, which were crystallized above the Curie temperature. The samples crystallized above the Curie temperature showed higher melting temperatures than those crystallized below the Curie temperature, resulting in an upturn of slope at high temperatures in the Hoffman‐Weeks plot. The polymer‐polymer interaction parameter was calculated to be −0·165 at 130°C from the equilibrium melting temperatures, indicating miscibility of the two components.