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One‐step preparation of black polystyrene particles via in situ suspension polymerization
Author(s) -
Yan Juntao,
Miao Xiaojie,
Zhang Qiaoyun,
Cui Xuejun,
Li Junfeng,
Wang Hongyan
Publication year - 2011
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21829
Subject(s) - materials science , polystyrene , suspension polymerization , thermogravimetric analysis , carbon black , scanning electron microscope , thermal stability , miscibility , polymerization , gel permeation chromatography , chemical engineering , in situ polymerization , polymer chemistry , suspension (topology) , dispersion polymerization , styrene , dispersion (optics) , polymer , copolymer , composite material , natural rubber , mathematics , homotopy , pure mathematics , engineering , physics , optics
A facile one‐step technique of preparing black polystyrene (PS) was developed by in situ suspension polymerization in which polymerization of styrene was conducted in the presence of modified carbon black (CB). A series of uniform black PS particles had been synthesized with this method. Morphology and dispersion stability of the various CBs were investigated by both scanning electron microscopy and spectrophotometric analysis. The results of thermogravimetric analysis indicated that the thermal stability of PS was significantly enhanced by introducing modified CB. In addition, the PS synthesized in the absence or presence of modified CB possessed a narrow molecular distribution, as was characterized by gel permeation chromatography. Compared with the conventional mechanical blending technique of PS and CB, our present technique could not only avoid the drawback of poor miscibility between the CB and PS, but also simplify the synthesis technique. Scanning electron microscopy micrographs of the resulting black PS demonstrated that modified CB was well dispersed in the PS matrix. POLYM. ENG. SCI., 2011. © 2010 Society of Plastics Engineers