Molina Ricardo, Comelles Francesc, Juliá Maria Rosa, Erra Pilar
Departamento de Tecnología de Tensioactivos, IIQAB-CSIC, C/Jordi Girona, 18-26, Barcelona, 08034, Spain
J Colloid Interface Sci. 2001 May 1;237(1):40-46. doi: 10.1006/jcis.2001.7447.
Wetting properties of a solid surface can change as a consequence of chemical treatment. There is a relationship between the molecular structure of a surface and the macroscopic properties of this surface such as wetting and adhesion. Information on the surface energy of a solid was obtained by calculating polar and dispersion force contributions by means of contact angle determination. The superficial modification undergone by human hair treatments with or without hydrogen peroxide at alkaline pH was studied by means of wetting force measurements. The wetting increase in treated human hair fibers was analyzed following the Hüttinger method using contact angle data, taking into account the acid-base and dispersion components of the total wetting adhesion work. The hydrogen peroxide treatment at alkaline pH leads to a partial removal of hydrocarbon chains and to the formation of ionic groups (cysteic acid residues) on the outer scale cell surface. The latter phenomenon was observed by means of an increase in the acid-base adhesion work versus water wetting liquid at alkaline pH. Copyright 2001 Academic Press.
固体表面的润湿性会因化学处理而改变。表面的分子结构与该表面的宏观性质（如润湿性和粘附性）之间存在关联。通过接触角测定来计算极性和色散力贡献，从而获得固体表面能的信息。借助润湿度测量研究了在碱性pH值下用或不用过氧化氢处理人发时所经历的表面改性。使用接触角数据，按照许廷格方法，考虑到总润湿粘附功的酸碱和色散成分，分析了处理过的人发纤维中润湿性的增加情况。在碱性pH值下用过氧化氢处理会导致烃链部分去除，并在外层细胞表面形成离子基团（半胱氨酸残基）。通过在碱性pH值下酸碱粘附功相对于水润湿性液体的增加观察到了后一种现象。版权所有2001年学术出版社。
