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Synthesis and characterization of acetylated syndiotactic polystyrene
Author(s) -
Gao Yong,
Li HuaMing
Publication year - 2004
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.1541
Subject(s) - polystyrene , tacticity , crystallinity , aluminium chloride , polymer chemistry , acetyl chloride , polymer , anhydrous , fourier transform infrared spectroscopy , materials science , glass transition , acetylation , chemical modification , catalysis , chemistry , organic chemistry , chemical engineering , aluminium , polymerization , composite material , biochemistry , engineering , gene
Acetylation of highly stereoregular syndiotactic polystyrene has been accomplished in a heterogeneous process by using carbon disulfide as the dispersing medium, and acetyl chloride and anhydrous aluminium chloride as acetylating agent and catalyst, respectively. The acetylation reaction can be well controlled and carried out to a high degree of acetylation. The resultant polymer was characterized by FTIR and NMR spectroscopy. The incorporation of acetyl groups into syndiotactic polystyrene was found to have an effect on the thermal properties of these new materials. The degree of crystallinity was decreased by the presence of acetyl groups, while the glass transition temperature increased. Copyright © 2004 Society of Chemical Industry