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
收藏
页码：10883 / 10890
页数：8
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