Artigo
Effect of alkyl chain length on the adsorption and frictional behaviour of 1-alkyl-3-methylimidazolium chloride ionic liquid surfactants on gold surfaces
Colloids and Surfaces A: Physicochemical and Engineering Aspects
— 2011 — Elsevier
Informações chave
Autores:
Publicado em
05/03/2011
Resumo
A study comprising the adsorption and frictional behaviour of 1-alkyl-3-methylimidazolium chloride ionic liquids, [Cnmim][Cl] (with n = 10,12,14), deposited on gold surfaces at a fixed concentration of 0.07M was carried out using a quartz crystal microbalance (QCM), a nanotribometer and an atomicforce microscope (AFM). The size of the alkyl side-chain of the cation and the corresponding adsorption and frictional results correlate quite well. AFM morphological images support the reasoning put forward for the observed trends. They also suggest that the alkyl chain length of the cation plays an important role in the definition of the structure of the adsorbed aggregates. The ratio between the working concentrations and the critical micelle concentration of the studied ionic liquids is also an important factor.
Detalhes da publicação
Autores da comunidade :
Ana Paula Valagão Amadeu do Serro
ist134419
Rogério Anacleto Cordeiro Colaço
ist13267
Benilde de Jesus Vieira Saramago
ist11322
José Nuno Aguiar Canongia Lopes
ist13160
Versão da publicação
VoR - Versão publicada
Editora
Elsevier
Ligação para a versão da editora
https://www.sciencedirect.com/science/article/pii/S092777571100063X
Título do contentor da publicação
Colloids and Surfaces A: Physicochemical and Engineering Aspects
Primeira página ou número de artigo
361
Última página
366
Volume
377
Fascículo
1-3
Domínio Científico (FOS)
materials-engineering - Engenharia dos Materiais
Palavras-chave
- Ionic liquid
- Adsorption
- Friction coefficient
- Morphology
- Gold surface
Idioma da publicação (código ISO)
eng - Inglês
Acesso à publicação:
Acesso apenas a metadados