Wide-angle X-ray scattering study of structural parameters in non-crystalline polymers

Tipo de material: Texto

TextoSeries ; Faraday Discussions of the Chemical Society, 68, p.46-57, 1979Trabajos contenidos:

Lovell, R
Mitchell, G.R
Windle, A.H

Tema(s):

POLYMERS

Recursos en línea:

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Resumen: The paper presents an analysis of WAXS (wide-angle X-ray scattering)data which aids an understanding of the structure of non-crystalline polymers. Experimental results are compared with calculations of scattering from possible models. Evidence is presented which supports the view that the chains in molten PE do not lie parallel but have a conformation in accord with the predictions of energy calculations. However, the evidence indicates that in "molten" PTFE the chains lie parallel over distances well in excess of their diameters. WAXS-based proposals are made for the conformations of a-PMMA and a-PS.

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The paper presents an analysis of WAXS (wide-angle X-ray scattering)data which aids an understanding of the structure of non-crystalline polymers. Experimental results are compared with calculations of scattering from possible models. Evidence is presented which supports the view that the chains in molten PE do not lie parallel but have a conformation in accord with the predictions of energy calculations. However, the evidence indicates that in "molten" PTFE the chains lie parallel over distances well in excess of their diameters. WAXS-based proposals are made for the conformations of a-PMMA and a-PS.

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