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Synthesis and Mechanical Properties of Polypropylene‐based Polymer Hybrids via Controlled Radical Polymerization
Author(s) -
Kaneko Hideyuki,
Matsuo Shingo,
Kawahara Nobuo,
Saito Junji,
Matsugi Tomoaki,
Kashiwa Norio
Publication year - 2008
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200751402
Subject(s) - tacticity , polymer chemistry , materials science , copolymer , methyl methacrylate , polymerization , radical polymerization , polypropylene , polystyrene , styrene , polymer , methyl acrylate , composite material
Isotactic polypropylene‐based graft copolymers linking poly(methyl methacrylate), poly( n ‐butyl acrylate) and polystyrene were successfully synthesized by a controlled radical polymerization with isotactic polypropylene (iPP) macroinitiator. The hydroxylated iPP, prepared by propylene/10‐undecen‐1‐ol copolymerization with a metallocene/methyl‐aluminoxane/triisobutylaluminum catalyst system, was treated with 2‐bromoisobutyryl bromide to produce a Br‐group containing iPP (PP‐ g ‐Br). The resulting PP‐ g ‐Br could initiate controlled radical polymerization of methyl methacrylate, n ‐butyl acrylate and styrene by using a copper catalyst system, leading to a variety of iPP‐based graft copolymers with a different content of the corresponding polar segment. These graft copolymers demonstrated unique mechanical properties dependent upon the kind and content of the grafted polar segment.