Manipulating perfume delivery to the interface using polymer-surfactant interactions

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:466

Article

Bradbury, Robert^1,4  Penfold, Jeffrey^1,2  Thomas, Robert K.¹  Tucker, Ian M.³  Petkov, Jordan T.^3,5  Jones, Craig³ 

[1] Univ Oxford, Phys & Theoret Chem Lab, S Parks Rd, Oxford, England

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

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

[4] Indiana Univ, Dept Phys, Ctr Exploitat Energy & Matter, Bloomington, IN 47405 USA

[5] Menara KLK, SDN BHD, KLK Oleo, Petaling 47810, Jaya Selanger, Malaysia

关键词: Adsorption;    Anionic surfactant;    Model perfumes;    Polyelectrolytes;   

DOI  :  10.1016/j.jcis.2015.12.041

来源: Elsevier

【 摘 要 】

Enhanced delivery of perfumes to interfaces is an important element of their effectiveness in a range of home and personal care products. The role of polyelectrolyte-surfactant mixtures to promote perfume adsorption at interfaces is explored here. Neutron reflectivity, NR, was used to quantify the adsorption of the model perfumes phenylethanol, PE, and linalool, LL, at the air-water interface in the presence of the anionic surfactant sodium dodecylsulfate, SDS, and the cationic polyelectrolytes, poly(dimethyldiallyl ammonium chloride), polydmdaac, and poly(ethyleneimine), PEI. The strong SDS-polydmdaac interaction dominates the surface adsorption in SDS-polymer-perfume (PE, LL) mixtures, such that the PE and LL adsorption is greatly suppressed. For PEI-SDS-perfume mixtures the PEI-LL interaction competes with the SDS-PEI interaction at all pH at the surface and significant LL adsorption occurs, whereas for PE the PEI-SDS interaction dominates and the PE adsorption is greatly reduced. The use of the strong surface poly electrolyte-ionic surfactant interaction to manipulate perfume adsorption at the air-water interface has been demonstrated. In particular the results show how the competition between polyelectrolyte, surfactant and perfume interactions at the surface and in solution affect the partitioning of perfumes to the surface (C) 2015 Elsevier Inc. All rights reserved.

【 授权许可】

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