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Determination of short‐chain branching content in polyethylene by pyrolysis comprehensive multidimensional gas chromatography using low thermal mass column technology
Author(s) -
Eckerle Patric,
Pursch Matthias,
Cortes Hernan J.,
Sun Kefu,
Winniford Bill,
Luong Jim
Publication year - 2008
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.200800218
Subject(s) - pyrolysis , branching (polymer chemistry) , polyethylene , gas chromatography , vaporizer , chromatography , chemistry , analytical chemistry (journal) , organic chemistry , waste management , engineering
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×GC). 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 GC (GC×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.