Abstract
A series of propylene-co-styrenic monomer copolymers were synthesized using the Friedel–Crafts alkylation reaction between chlorinated PP and substituted benzene, and the effects of these copolymers on a PP/PS (80/20) blend were investigated by using the impact test, morphology observation, thermo- and dynamic mechanical analysis, and rheology measurements. The results showed that the compatibilization efficiency varied as the variation of the substitute on the benzene ring of the styrenic monomer unit was incorporated in the PP chain in an order of methyl > ethyl > methoxyl. The copolymers bearing a crystalline isotactic polypropylene chain sequence and rubbery propylene-co-styrene-like unit chain segments may prepossess imaginable applications, giving an example for the synthesis and applications of PP-based copolymers, initiating a new way to broaden the polyolefin-based material family.
Highlights
As is well known, the importance of polypropylene (PP) cannot be over complimented in the modern world [1,2]
A series of propylene-co-styrenic monomer copolymers were synthesized by using the Friedel–Crafts alkylation reaction, and those copolymers as a compatibilizer for the PP/PS blend were investigated by using the impact test, morphology observation, dynamic mechanical analysis, thermo- and rheological behavior measurements
Propylene-co-styrenic monomer copolymers were synthesized via the Friedel–Crafts alkylation reaction between chlorinated polypropylene and substituted benzene using Lewis acid as the catalyst
Summary
The importance of polypropylene (PP) cannot be over complimented in the modern world [1,2]. We attempted to synthesize polypropylene with styrenic monomer units incorporated in the main chain by using the Friedel–Crafts alkylation reaction between CPP and substituted benzene as raw materials together with the Lewis acid as the catalyst. Have been reported for compatibilization of PP/PS blends [8,9], the compatibilization efficiencies of those compatibilizers cannot be well complimented due to insufficient structural similarity It is interesting from a scientific aspect that a well-defined polypropylene-graft-polystyrene synthesized by a two-step polymerization process and used as compatibilizer for PP/PS blend have been reported [10]. A series of propylene-co-styrenic monomer copolymers were synthesized by using the Friedel–Crafts alkylation reaction, and those copolymers as a compatibilizer for the PP/PS blend were investigated by using the impact test, morphology observation, dynamic mechanical analysis, thermo- and rheological behavior measurements
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