Hydrophobically end-capped polyethylene-oxide urethanes: 2. Modelling their association in water

Autor:	Francoise Clouet, Jeanne François, Clarisse Maechling-Strasser
Rok vydání:	1992
Předmět:	Aqueous solution Polymers and Plastics Polymer science Chemistry Association (object-oriented programming) Organic Chemistry Concentration effect Polyethylene oxide Light scattering Molecular aggregation Viscosity End-group Materials Chemistry Organic chemistry
Zdroj:	Polymer. 33:1021-1025
ISSN:	0032-3861
DOI:	10.1016/0032-3861(92)90018-r
Popis:	Associative thickeners of the end-capped polyethyleneoxide urethane type are well known to form aggregates in aqueous solutions but there is a lack of studies dealing with the determination of the association mechanisms and with the size and form of these aggregates. We show for a given example that a combination of light scattering and viscosity experiments may produce a rather good description of these phenomena by interpreting them through theories of association and models of branched polymers. It is concluded that the aggregates look like statistically branched polymers, the junction points being formed by the association of approximately four hydrophobic chain ends.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ecd69bd2bf2c241c004fbe1be5d50003 https://doi.org/10.1016/0032-3861(92)90018-r Zobrazit plný text záznamu