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Functionalization of polyolefins by reactive processing: influence of starting reagents on content and type of grafted groups
Author(s) -
Passaglia Elisa,
Coiai Serena,
Aglietto Mauro,
Ruggeri Giacomo,
Rubertà Marco,
Ciardelli Francesco
Publication year - 2003
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.200350813
Subject(s) - surface modification , polypropylene , polymer , olefin fiber , materials science , copolymer , polymer chemistry , ethylene , chemical modification , polymer science , degradation (telecommunications) , chemical engineering , chemistry , organic chemistry , composite material , computer science , catalysis , telecommunications , engineering
Previous studies carried out in our laboratory on the functionalization of ethylene polymers (homo and copolymers) through free radical processes, using mechanical mixers and/or extruders with diethylmaleate (DEM) and dicumyl peroxide (DCP), have shown that the presence of branched α‐olefin blocks favours degradation versus functionalization and crosslinking whereas these last are more effective with linear ethylene blocks. In this contest the present paper reports about attempts to extend the same processes to propylene polymers by benefitting of the indications of previous results. In particular the one step functionalization of EPM with two or more different groups was carried through the use of different monomers. Moreover the procedure was extended to polypropylene thus obtaining a significant functionalization degree flanked by a remarkable decrease of molecular weight.