Structure of the oriented poly-bis-trifluoroethoxyphosphazene at various temperatures

Autor:	N.A. Plate, D. R. Tur, Ye.M. Antipov, V. G. Kulichikhin, Ye.K. Borisenkova
Rok vydání:	1989
Předmět:	chemistry.chemical_classification Phase transition Crystallography Materials science chemistry Isotropy General Engineering Structure (category theory) Thermodynamics Mesophase Polymer
Zdroj:	Polymer Science U.S.S.R.. 31:2615-2625
ISSN:	0032-3950
Popis:	Structural changes occuring in phase transitions of uniaxially oriented poly-bis-trifluoroethoxyphosphazene (PFP) films and extrudates have been investigated by means of X-ray analysis. Changes in structural parameters during the transition of two possible crystalline modifications to the mesophase, and then to the isotropic melt, were observed. The proposed model of polymer structure in the mesomorphic state is based on an assumption that in this state a layered type of packing is realized. This resembles one of the crystalline types, though the character of ordering along each of the three dimensions differs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::39b1bbb9dd00b7f02dbfa7986b1951b4 https://doi.org/10.1016/0032-3950(89)90286-4 Zobrazit plný text záznamu