Microfocus wide-angle X-ray scattering of polymers crystallized in a fast scanning chip calorimeter

M. Drongelen, van, A.M.J.T. Meijer-Vissers, D. Cavallo, G. Portale, G. Vanden Poel, R. Androsch

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Abstract

Microfocus wide-angle X-ray scattering (WAXS) has been applied for analysis of the polymorphism of isotactic polypropylene and polyamide 6 prepared in a fast scanning chip calorimeter (FSC). Samples with a typical mass of few hundred nanograms, and lateral dimension and thickness of about 100 m and 20 m, respectively, were exposed to a defined thermal history in the FSC and subsequently analyzed regarding the X-ray structure at ambient temperature using an intense synchrotron microfocused X-ray beam. The relaxed melt of isotactic polypropylene was cooled at rates of 40 K s-1 and 200 K s-1 which allowed formation of -crystals or mesophase, respectively. Polyamide 6 was isothermally crystallized at 95 ¿C and 180 ¿C which led to formation of -mesophase and -crystals, respectively. This study demonstrated,for the first time, that FSC polymer crystallization experiments could be completed and expanded by subsequent in situ structure analysis by X-ray scattering.
Original languageEnglish
Pages (from-to)33-37
JournalThermochimica Acta
Volume563
DOIs
Publication statusPublished - 2013

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