Determination of short-chain branching content in polyethylene by pyrolysis comprehensive multidimensional gas chromatography using low thermal mass column technology

被引：10

作者：

Eckerle, Patric ^{[2
]}

Pursch, Matthias ^{[2
]}

Cortes, Hernan J. ^{[1
]}

Sun, Kefu ^{[3
]}

Winniford, Bill ^{[3
]}

Luong, Jim

机构：

[1] Dow Chem Co USA, Analyt Sci, Midland, MI 48667 USA

[2] Dow Deutschland GmbH, Analyt Sci, Rheinmunster, Germany

[3] Dow Chem Co USA, Analyt Sci, Freeport, TX 77541 USA

来源：

JOURNAL OF SEPARATION SCIENCE | 2008年 / 31卷 / 19期

关键词：

Comprehensive multidimensional chromatography; GC x GC; Polyethylene; Programmed temperature vaporizer; Pyrolysis-GC x GC;

D O I：

10.1002/jssc.200800218

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A research effort was undertaken to utilize the pyrolysis process to create fragments of polyethylene that could be indicative of branching, and allow quantitiation of said short-chain branches by pyrolysis comprehensive 2-D GC (Py-GC x CC). Several strategies for sample introduction and pyrolysis such as the in-column pyrolysis device and the programmed temperature vaporizer (PTV) were studied. The chromatographic separations were executed using low-thermal mass (LTM) comprehensive 2-D CC (GC x GC). A series of polyethylene-co-hexene samples were analyzed and a linear correlation of 1-hexene content with branching peak ratio was found. Correlation coefficients were determined as 0.97 for the measurements performed.

引用

页码：3416 / 3422

页数：7