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Nonisothermal crystallization kinetics of polypropylene/polypropylene‐ g ‐polystyrene/polystyrene blends
Author(s) -
Li Jinge,
Li Huayi,
Ke Yucai,
Li Qian,
Zhang Liaoyun,
Hu Youliang
Publication year - 2010
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.32861
Subject(s) - crystallization , polypropylene , polystyrene , materials science , differential scanning calorimetry , kinetics , activation energy , polymer chemistry , avrami equation , copolymer , chemical engineering , thermodynamics , crystallization of polymers , composite material , polymer , chemistry , physics , quantum mechanics , engineering
The nonisothermal crystallization kinetics of polypropylene (PP), PP/polystyrene (PS), and PP/PP‐ g ‐PS/PS blends were investigated with differential scanning calorimetry at different cooling rates. The Jeziorny modified Avrami equation, Ozawa method, and Mo method were used to describe the crystallization kinetics for all of the samples. The kinetics parameters, including the half‐time of crystallization, the peak crystallization temperature, the Avrami exponent, the kinetic crystallization rate constant, the crystallization activation energy, and the F ( T ) and a parameters were determined. All of the results clearly indicate that the PP‐ g ‐PS copolymer accelerated the crystallization rate of the PP component in the PP/PP‐ g ‐PS/PS blends. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011