BibTex format
@article{Weiand:2024:10.1021/acs.langmuir.3c03737,
author = {Weiand, E and Koenig, PH and Rodriguez-Ropero, F and Roiter, Y and Angioletti-Uberti, S and Dini, D and Ewen, JP},
doi = {10.1021/acs.langmuir.3c03737},
journal = {Langmuir: the ACS journal of surfaces and colloids},
pages = {7933--7946},
title = {Boundary lubrication performance of polyelectrolyte–surfactant complexes on biomimetic surfaces},
url = {http://dx.doi.org/10.1021/acs.langmuir.3c03737},
volume = {40},
year = {2024}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - Aqueous mixtures of oppositely charged polyelectrolytes and surfactants are useful in many industrial applications, such as shampoos and hair conditioners. In this work, we investigate the friction between biomimetic hair surfaces in the presence of adsorbed complexes formed from cationic polyelectrolytes and anionic surfactants in an aqueous solution. We apply nonequilibrium molecular dynamics (NEMD) simulations using the coarse-grained MARTINI model. We first developed new MARTINI parameters for cationic guar gum (CGG), a functionalized, plant-derived polysaccharide. The complexation of CGG and the anionic surfactant sodium dodecyl sulfate (SDS) on virgin and chemically damaged biomimetic hair surfaces was studied using a sequential adsorption approach. We then carried out squeeze-out and sliding NEMD simulations to assess the boundary lubrication performance of the CGG–SDS complex compressed between two hair surfaces. At low pressure, we observe a synergistic friction behavior for the CGG–SDS complex, which gives lower shear stress than either pure CGG or SDS. Here, friction is dominated by viscous dissipation in an interfacial layer comprising SDS and water. At higher pressures, which are probably beyond those usually experienced during hair manipulation, SDS and water are squeezed out, and friction increases due to interdigitation. The outcomes of this work are expected to be beneficial to fine-tune and screen sustainable hair care formulations to provide low friction and therefore a smooth feel and reduced entanglement.
AU - Weiand,E
AU - Koenig,PH
AU - Rodriguez-Ropero,F
AU - Roiter,Y
AU - Angioletti-Uberti,S
AU - Dini,D
AU - Ewen,JP
DO - 10.1021/acs.langmuir.3c03737
EP - 7946
PY - 2024///
SN - 0743-7463
SP - 7933
TI - Boundary lubrication performance of polyelectrolyte–surfactant complexes on biomimetic surfaces
T2 - Langmuir: the ACS journal of surfaces and colloids
UR - http://dx.doi.org/10.1021/acs.langmuir.3c03737
UR - http://hdl.handle.net/10044/1/110522
VL - 40
ER -