Interfacial structures of comb co-polymer/cationic surfactant mixtures
First of all, we would like to address directly two points from reviewers’ comments on our last submission. First, the panel queried the chemical structure of the polymers, which is now provided in Fig.1 – it is novel and not previously studied, and industrially important. We further clarify that, for this industrial collaboration (as encouraged by ILL) the results are being prepared for a manuscript for submission to Langmuir. Secondly, our previous FIGARO NR experiments on the polymers mixed with anionic and neutral surfactants showed that the interfacial structures of the complexes were different from commonly studied comb polymers (i.e. with hydrophobic or charged backbones and hydrophilic side chains). In addition, the headgroup charge played an important role in the interfacial polymer-surfactant structure. Our proposed measurements using a cationic surfactant will lead to further physical insights and form the basis of further publication. Our preliminary surface tension measurements and XRR results at Diamond (UK) point to different complex structures between the neutral polymer and differently charged surfactants (anionic SDS and cationic DTAB).
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BRISCOE WUGE H; Richard A. Campbell; CHEN Meng; Luisa Islas; ROBLES Eric; SLASTANOVA Anna and WLODEK Magdalena. (2017). Interfacial structures of comb co-polymer/cationic surfactant mixtures. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-12-488
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