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Studies on the δ‐form complex in the syndiotactic polystyrene–organic molecule system. II. Structural investigation of the δ‐form with p ‐ and m ‐xylene isomers
Author(s) -
Sivakumar Muthusamy,
Yamamoto Yusuke,
Amutharani Devaraj,
Tsujita Yoshiharu,
Yoshimizu Hiroaki,
Kinoshita Takatoshi
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12474
Subject(s) - polystyrene , tacticity , mole fraction , differential scanning calorimetry , polymer chemistry , xylene , thermogravimetric analysis , solvent , infrared spectroscopy , molecule , chemistry , materials science , organic chemistry , polymer , thermodynamics , polymerization , physics , benzene
Syndiotactic polystyrene (sPS) membranes containing different mole fractions of p ‐xylene were prepared by a solution‐casting procedure. Complex formation between sPS and xylene was studied by thermogravimetric analysis and Fourier transform infrared spectroscopy. The stability and desorption behavior of the sPS–guest solvent and phase transitions were studied by differential scanning calorimetry. The formation of the δ‐form complex in the presence of different mole fractions of xylene isomers was analyzed and confirmed. The mole fraction of p ‐xylene in the dried membrane was found to be higher than that of the corresponding mole fraction in the isomer solvent solution used for casting. This was attributed to the preferential complexing ability of p ‐xylene with sPS. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2882–2887, 2003