Data/hora: 05/06/2024 17:17:11

Provedor de dados: | 56
País: | Brazil
Título: | Effect of urea on biomimetic aggregates
Data: | 1997-02-01
Ano: | 1997
Palavras-chave: | Urea; Denaturation; Surfactants; Macromolecular structure.
Resumo: | The effect of urea on biomimetic aggregates (aqueous and reversed micelles, vesicles and monolayers) was investigated to obtain insights into the effect of the denaturant on structured macromolecules. Direct evidence obtained from light scattering (static and dynamic), monolayer maximum isothermal compression and ionic conductivity measurements, together with indirect evidence from fluorescence photodissociation, fluorescence suppression, and thermal reactions, strongly indicates the direct interaction mechanism of urea with the aggregates. Preferential solvation of the surfactant headgroups by urea results in an increase in the monomer dissociation degree (when applied), which leads to an increase in the area per headgroup and also in the loss of counterion affinities
Tipo: | Info:eu-repo/semantics/other
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000200004
Editor: | Associação Brasileira de Divulgação Científica
Relação: | 10.1590/S0100-879X1997000200004
Formato: | text/html
Fonte: | Brazilian Journal of Medical and Biological Research  v.30 n.2 1997
Fonte: | info:eu-repo/semantics/openAccess