Some possible kinds of disorder in the packing of chains of syndiotactic polypropylene, compatible with the maintenance of crystalline long-range order, are discussed and the corresponding models are described. The diffraction intensities at appropriate points or lines of the reciprocal lattice are calculated for the various models; experimental observations of the intensity lowering of some reflections and the appearance of haloes are explained with the models in a semiquantitative way. The possible connection of some kinds of disorder with the presence of configurational defects along the chains is discussed.
Analysis of the Disorder Occurring In the Crystal-structure of Syndiotactic Polypropylene / Auriemma, Finizia; DE ROSA, Claudio; P., Corradini. - In: MACROMOLECULES. - ISSN 0024-9297. - STAMPA. - 26:(1993), pp. 5719-5725. [10.1021/ma00073a029]
Analysis of the Disorder Occurring In the Crystal-structure of Syndiotactic Polypropylene
AURIEMMA, FINIZIA;DE ROSA, CLAUDIO;
1993
Abstract
Some possible kinds of disorder in the packing of chains of syndiotactic polypropylene, compatible with the maintenance of crystalline long-range order, are discussed and the corresponding models are described. The diffraction intensities at appropriate points or lines of the reciprocal lattice are calculated for the various models; experimental observations of the intensity lowering of some reflections and the appearance of haloes are explained with the models in a semiquantitative way. The possible connection of some kinds of disorder with the presence of configurational defects along the chains is discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
