Quantifying the Effect of Polyethylene Molecular Weight, Comonomer Fraction, and Comonomer Type on High-Temperature Thermal Gradient Interaction Chromatography

High-temperature thermal gradient interaction chromatography (HT-TGIC) can be used to measure the chemical composition distribution of ethylene/α-olefin copolymers using a column packed with porous graphitic carbon. It is generally assumed that polymer molecular weight plays a secondary role in HT-T...

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Published in:Macromolecules 2021-12, Vol.54 (23), p.10883-10890
Main Authors: Badri, Amirreza, Mehdiabadi, Saeid, Soares, João B. P
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Language:English
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description High-temperature thermal gradient interaction chromatography (HT-TGIC) can be used to measure the chemical composition distribution of ethylene/α-olefin copolymers using a column packed with porous graphitic carbon. It is generally assumed that polymer molecular weight plays a secondary role in HT-TGIC fractionation, but this assumption is incorrect for lower-molecular-weight polymers. In this article, we developed a general calibration curve to quantify the effect of polymer molecular weight, α-olefin fraction, and type (1-hexene, 1-octene, and 1-decene) on HT-TGIC peak temperatures and discussed its implications on converting HT-TGIC profiles into chemical composition distributions.
doi_str_mv 10.1021/acs.macromol.1c01812
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title Quantifying the Effect of Polyethylene Molecular Weight, Comonomer Fraction, and Comonomer Type on High-Temperature Thermal Gradient Interaction Chromatography
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