Describing and quantifying the chemical composition distribution in unimodal and multimodal ZN‐polyethylene using CRYSTAF
2016
A new approach in describing and quantifying the chemical composition distribution (CCD) in Ziegler–Natta-polyethylene copolymers was developed by using crystallization analysis fractionation (Crystaf). Copolymers of ethylene and α-olefins (1-butene and 1-hexene) polymerized with different ZN catalyst systems were analyzed. Distinct differences in the CCD between the different polymer types (catalyst-cocatalyst system and comonomer type) were observed and could be quantified. Same approach was applied to 2-dimensional fractionation technique, cross fractionation chromatography, to describe and quantify the CCD of multimodal polyethylene copolymers. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43089.
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