Enhanced perfume surface delivery to interfaces using surfactant surface multilayer structures

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:461

Article

Brabury, Robert¹  Penfold, Jeffrey^1,2  Thomas, Robert K.¹  Tucker, Ian M.³  Petkov, Jordan T.³  Jones, Craig³ 

[1] Univ Oxford, Dept Chem, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England

[2] Rutherford Appleton Lab, STFC, Didcot OX11 0QX, Oxon, England

[3] Unilever Res & Dev Lab, Wirral, Merseyside, England

关键词: Surfactant multilayers;    Model perfumes;    Adsorption;   

DOI  :  10.1016/j.jcis.2015.09.045

来源: Elsevier

【 摘 要 】

Enhanced surface delivery and retention of perfumes at interfaces are the keys to their more effective and efficient deployment in a wide range of home and personal care related formulations. It has been previously demonstrated that the addition of multivalent counterions, notably Ca2+, induces multilayer adsorption at the air-water interface for the anionic surfactant, sodium dodecy1-6-benzenesulfonate, LAS-6. Neutron reflectivity, NR, measurements are reported here which demonstrate that such surfactant surface multilayer structures are a potentially promising vehicle for enhanced delivery of perfumes to interfaces. The data show that the incorporation of the model perfumes, phenylethanol, PE, and linalool, LL, into the surface multilayer structure formed by LAS-6/Ca2+ results in the surface structures being retained up to relatively high perfume mole fractions. Furthermore the amount of perfume at the surface is enhanced by at least an order of magnitude, compared to that co-adsorbed with a surfactant monolayer. (C) 2015 Elsevier Inc. All rights reserved.

【 授权许可】

Free