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Characterization of high melt strength propylene/1‐butene copolymer synthesized by in situ heat induction melt reaction
Author(s) -
An Yanjie,
Xing Haiping,
Wang Yanhui,
Tang Tao
Publication year - 2012
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.36591
Subject(s) - tmpta , materials science , copolymer , melt flow index , polypropylene , ultimate tensile strength , izod impact strength test , composite material , polymer chemistry , polymerization , thermal stability , chemical engineering , polymer , acrylate , engineering
Propylene/1‐butene copolymer powders were produced through bulk copolymerization of propylene with 1‐butene in a 12 m 3 polymerization reactor. High melt strength polypropylene (HMSPP) was synthesized by in situ heat induction melt reaction, in which pure propylene/1‐butene copolymer powders without any additives were used as a basic resin and trimethylolpropane triacrylate (TMPTA) as a crosslinking agent. The structure and properties of the resultant HMSPP were characterized by means of various measurements. The content of TMPTA strongly influenced the melt strength and melt flow rate (MFR) of HMSPP. With increasing the content of TMPTA, the melt strength of HMSPP increased, and the MFR reduced. In addition, owing to the existence of crosslinking structure, thermal stability and tensile strength of HMSPP were improved compared with pristine propylene/1‐butene copolymer. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012