High-temperature gradient HPLC for the separation of polyethylene–polypropylene blends

Autor:	Lars-Christian Heinz, Harald Pasch
Rok vydání:	2005
Předmět:	Polypropylene Molar mass Materials science Chromatography Polymers and Plastics Silica gel Organic Chemistry Size-exclusion chromatography Polyethylene Polyolefin Linear low-density polyethylene chemistry.chemical_compound chemistry Materials Chemistry Ethylene glycol
Zdroj:	Polymer. 46:12040-12045
ISSN:	0032-3861
Popis:	A high-temperature gradient HPLC method has been developed for the analysis of polyethylene–polypropylene blends. For the first time it was possible to separate these polyolefin blends by a chromatographic technique which is operating at 140 °C. Blends of a commercial polypropylene and a medium molar mass linear polyethylene were separated using a mobile phase of ethylene glycol monobutylether (EGMBE) and 1,2,4-trichlorobenzene (TCB) and silica gel as the stationary phase. With the use of n -decanol as sample solvent, a precipitation–redissolution mechanism for polyethylene (PE) was established while polypropylene (PP) is eluted in size exclusion mode.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5950b3ef99def95f3e34ec4ecc36b253 https://doi.org/10.1016/j.polymer.2005.11.001 Zobrazit plný text záznamu Full Text from ScienceDirect