Advances in Thermal Gradient Interaction Chromatography and Crystallization Techniques for Composition Analysis in Polyolefins

被引:31
|
作者
Monrabal, Benjamin [1 ]
Lopez, Esther [1 ]
Romero, Loli [1 ]
机构
[1] Polymer Char, E-46980 Paterna, Spain
关键词
CEF; CRYSTAF; interaction chromatography; polyolefins; SGIC; TGIC; TREF; SEPARATION; FRACTIONATION; POLYETHYLENE;
D O I
10.1002/masy.201300038
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Since the introduction of high temperature interaction chromatography for the analysis of polyolefins the technique has demanded a particular interest in the analysis of elastomers where crystallization techniques will meet a limitation given the low crystallinity of these polymers. In this paper the introduction of non carbon adsorption supports such as molybdenum sulfide, boron nitride and tungsten sulfide with equivalent separation to graphitized carbon packing in TGIC analysis of polyolefins is presented. A mechanism for the separation of polyolefins by adsorption chromatography on layered substrates is proposed. The influence of solvent polarity in interaction chromatography is discussed.
引用
收藏
页码:9 / 21
页数:13
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