کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1211167 1493754 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On-line size exclusion chromatography–pyrolysis-gas chromatography–mass spectrometry for copolymer characterization and additive analysis
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
On-line size exclusion chromatography–pyrolysis-gas chromatography–mass spectrometry for copolymer characterization and additive analysis
چکیده انگلیسی

On-line coupled size exclusion chromatography–pyrolysis gas chromatography mass spectrometry (SEC–Py-GC–MS) is studied as a novel tool for the characterization of complex polymer samples. An automated system for on-line SEC–Py-GC–MS allowing transfer of multiple fractions was developed based on stop-flow operation of the SEC dimension, syringe-based transfer of the SEC fraction to the GC instrument and solvent elimination with subsequent pyrolysis in a programmed temperature vaporization (PTV) injector. After optimization the system was applied to the characterization of a complex terpolymer composed of very similar monomers. The use of the system for combined pyrolysis and additive analyses in polycarbonate was also demonstrated. Results obtained with the new method indicate the interesting potentials of the method for detailed characterization of polymeric materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1143, Issues 1–2, 2 March 2007, Pages 182–189
نویسندگان
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