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

被引：2

作者：

Badri, Amirreza ^{[1
]}

Mehdiabadi, Saeid ^{[1
]}

Soares, Joao B. P. ^{[1
]}

机构：

[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada

来源：

MACROMOLECULES | 2021年 / 54卷 / 23期

关键词：

CRYSTALLIZATION ANALYSIS FRACTIONATION; ELUTION FRACTIONATION; SEPARATION; POLYPROPYLENE; ADSORPTION;

D O I：

10.1021/acs.macromol.1c01812

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

High-temperature thermal gradient interaction chromatography (HT-TGIC) can be used to measure the chemical composition distribution of ethylene/alpha-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, alpha-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.

引用

页码：10883 / 10890

页数：8

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