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Supercritical CO 2 assisted processing of polystyrene/nylon 1212 blends and CO 2 ‐induced epitaxy on nylon 1212
Author(s) -
Chang Yuning,
Xu Qun,
Han Buxing,
Wang Yudong,
Liu Minying,
Zhao Qingxiang
Publication year - 2004
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.20152
Subject(s) - polystyrene , materials science , scanning electron microscope , differential scanning calorimetry , nylon 6 , thermal stability , supercritical fluid , chemical engineering , polymer chemistry , composite material , polymer , chemistry , organic chemistry , physics , engineering , thermodynamics
Polystyrene/nylon 1212 blends were prepared with supercritical CO 2 as the substrate swelling agent and monomer/initiator carrier. Original nylon 1212 and blends were characterized with differential scanning calorimetry (DSC), polarizing microscopy, wide‐angle X‐ray diffraction, and scanning electron microscopy (SEM). A novel phenomenon, CO 2 ‐induced epitaxy, was discovered, and its mechanism was deduced. Thermal analysis performed with DSC indicated that the polystyrene/nylon 1212 blends had thermal stability superior to that of virgin nylon 1212. The DSC and SEM measurements indicated that incorporated polystyrene could notably improve the mechanical performance of nylon 1212. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 2023–2029, 2004