Mixed crystal infrared spectroscopy of uniaxially drawn polyethylene films

SPELLS, S. J. and COUTRY, S. (2007). Mixed crystal infrared spectroscopy of uniaxially drawn polyethylene films. Applied spectroscopy, 61 (3), 276-282.

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Abstract

Blends of fully deuterated polyethylene with unlabeled polymer have been studied using Fourier transform infrared (FT-IR) spectroscopy. Melt quenched samples were drawn at 1 mm min(-1), clamped, and cooled with liquid nitrogen. The CD2 bending vibration is sensitive to the local molecular arrangement. Changes in band components were related to (1) crystallization of amorphous polymer; (2) the untwisting of spherulite ribbons perpendicular to the draw direction; and (3) coarse slip. Measurement of remaining doublet splittings enabled estimates of surviving crystallite block sizes to be made. In addition, CH2 wagging and rocking bands showed evidence of increasingly defective crystals and of a Martensitic transformation to the monoclinic crystal form.

Item Type:	Article
Additional Information:	Spells, Stephen J. Coutry, Sandry
Research Institute, Centre or Group:	Materials and Engineering Research Institute > Polymers Nanocomposites and Modelling Research Centre > Polymers, Composites and Spectroscopy Group
Identification Number:	10.1366/000370207780220930
Depositing User:	Hilary Ridgway
Date Deposited:	12 May 2010 11:47
Last Modified:	29 Sep 2010 09:46
URI:	http://shura.shu.ac.uk/id/eprint/1817

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