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Synthesis of polypropene‐ graft ‐poly(ε‐caprolactone)
Author(s) -
Zhang Qijin,
Wen Jun,
Luo Xiaolie,
Wang Zhiyong
Publication year - 1995
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1995.021960421
Subject(s) - maleic anhydride , copolymer , polymer chemistry , benzoyl peroxide , caprolactone , melting point , radical initiator , materials science , peroxide , grafting , chemistry , polymer , polymerization , organic chemistry , composite material
The copolymerization of polypropene (PP) with maleic anhydride (MA) was carried out at 120°C in xylene with benzoyl peroxide (BPO) as initiator. The resulting product was identified as poly(propene‐co‐maleic anhydride) obtained by reaction of the double bond of maleic anhydride with free radicals created on the PP chain. In the next step this copolymer was reacted with functional poly(ε‐caprolactone) (PCL) by a co‐melting method to give rise to a graft copolymer. The optimum time for the second step was found to be around 6 h (at 120°C). X‐ray diffraction measurements and DSC characterization of PP‐ g ‐PCL have shown that the melting point of the PP phase in the graft copolymers is lower than that of homopolypropene and that its glass transition temperature increases with increasing of PCL grafts.