The pressure dependence of the rapid sedimentation of polymer solutions

Autor:	K.G. Khabarova, N.P. Nikitina, S.V. Kuz'minskaya, I.K. Nekrasov
Rok vydání:	1978
Předmět:	chemistry.chemical_classification chemistry Fujita scale Sedimentation (water treatment) Boundary location General Engineering Analytical chemistry Boundary (topology) Polymer Diffusion (business) Pressure dependence
Zdroj:	Polymer Science U.S.S.R.. 20:2240-2246
ISSN:	0032-3950
DOI:	10.1016/0032-3950(78)90391-x
Popis:	The ultracentrifugation results of poly-4,4-diphenylphthalein terephthalamide fractions in DMF and of two samples of PAN in DMF-THF and DMF-methanol have been processed according to the Fujita and Dishon et al. theories which are based on the analysis of the boundary location. The Fujita equation is shown to be inapplicable and that by Dishon and co-workers is restricted (absence of diffusion, narrow boundary) by the determination of the pressure parameter μ; an analysis of the areas enclosed by the sedimentation curves is essential to a correct μ determination.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::379d6dd4e509cfa98a3acaf9beb70c9b https://doi.org/10.1016/0032-3950(78)90391-x Zobrazit plný text záznamu