Interfacial Effects in Polypropylene Copolymer Systems

The application of this strategy to commercially important polyolefin multiphase systems to produce tuned and/or stabilized morphologies is certainly attractive. However, the required interfacial agents for this purpose have 

The formation, optimization, and commercialization of polypropylene nanocomposites is presently a field of active development (42). A recent study of TPO 

Polypropylene copolymers are commercially produced for applications especially requiring high impact strength. However, many other properties are offered by 

The structure of a commercial impact PP was determined by P-TREF, followed by analysis of the fractions by NMR in order to determine chemical composition and tacticity. It was found that the hiPP (MFR = 6) was composed of about 75 wt% iPP with average tacticity of about 97% and exhibiting a broad tacticity distribution extending to very low values, 17 wt% EPR containing an average of about 48 wt% ethylene and exhibiting a broad composition distribution and about 8 wt% of an ethylene-rich copolymer containing 92 wt% ethylene. The hiPP had = 380,000 and Mw/Mn = 6.3, the iPP had = 382,000 and M /Mn = 4.3, and the EPR had M GS 342,000 and M /Mn = 14.2. 

Interfacial effects on multiphase polymer systems have been of interest to polymer scientists. Apphcation of this strategy to commercially important polyolefin multiphase systems to produce tuned and/or stabilized morphologies is certainly attractive. Recently, polyolefin block copolymers have been introduced commercially and may be effective in controlling the morphology of related multiphase polyolefin systems, such as hiPP and TPO. 

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