Mathematical modeling of crystallization analysis fractionation (Crystaf) of polyethylene |
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| Authors: | Siripon Anantawaraskul João B. P. Soares Preechathorn Jirachaithorn Jumras Limtrakul |
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| Affiliation: | 1. Department of Chemical Engineering, Kasetsart University, Bangkok, Thailand 10900;2. Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1;3. Department of Chemistry, Kasetsart University, Bangkok, Thailand 10900 |
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| Abstract: | Four polyethylene samples (PE) with different molecular weight distributions (MWD) were analyzed by crystallization analysis fractionation (Crystaf) at several cooling rates to investigate the effect of MWD and cooling rate on their Crystaf profiles. Using these results, we developed a mathematical model for Crystaf that considers crystallization kinetic effects, which are ignored in all previous Crystaf models. The Crystaf model we proposed can fit the experimental Crystaf profiles of the 4 polyethylene resins very well. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 2749–2759, 2006 |
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| Keywords: | crystaf crystallization analysis fractionation molecular weight distribution polyethylene fractionation temperature rising elution fractionation TREF |
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