The application of wide-angle x-ray diffraction in energy-dispersive modality (EDXD) to the investigation of the static structure of amorphous poly(phenylacetylene) (PPA) is discussed. The structural investigation was carried out through the systematic comparison of the measured functions (the reduced interference function and the radial distribution function) and the same functions calculated from three-dimensional theoretical models, suitably optimized. Possible configurations and conformations, coming from the combination of the polymeric repeating units, were analyzed separately. Consistent with the literature, a general agreement for a cis-transoidal head-to-tail configuration was achieved. Possible coexistence of trans-transoidal head-to-head with cis-transoidal head-to-tail configuration is also discussed. Several simple models were investigated to gain information about the chain packing. Moreover, a first quantitative investigation of the dependence of the interference function upon mechanical compression of PPA was performed.
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|Titolo:||Energy dispersive X-ray diffraction (EDXD) investigation of amorphous poly(phenylacetylene) (PPA)|
|Data di pubblicazione:||2003|
|Citazione:||Energy dispersive X-ray diffraction (EDXD) investigation of amorphous poly(phenylacetylene) (PPA) / Alessandro, Isopo; Caminiti, Ruggero; Rosaria, D'Amato; Anita, Furlani; Russo, Maria Vittoria. - In: JOURNAL OF MACROMOLECULAR SCIENCE. PHYSICS. - ISSN 0022-2348. - STAMPA. - 42 B:5(2003), pp. 1061-1083.|
|Appare nella tipologia:||01a Articolo in rivista|