Superspreading performance of branched ionic trimethylsilyl surfactant Mg(AOTSiC)2

Nina M. Kovalchuk; Masanobu Sagisaka; Suzuna Osaki; Mark J.H. Simmons

doi:10.1016/j.colsurfa.2020.125277

Superspreading performance of branched ionic trimethylsilyl surfactant Mg(AOTSiC)₂

Nina M. Kovalchuk^*, Masanobu Sagisaka, Suzuna Osaki, Mark J.H. Simmons

^*Corresponding author for this work

Chemical Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

294 Downloads (Pure)

Abstract

The spreading performance of aqueous solutions containing a novel branched trimethylsilyl hedgehog ionic surfactant, Mg(AOTSiC)₂, was compared with that of trisiloxane superspreaders on a hydrophobic polyvinylidenefluoride substrate. The work shows that Mg(AOTSiC)₂ is a superspreader with spreading kinetics similar to trisiloxane surfactants, demonstrating that a hammer-like molecular architecture is not a necessary requirement for superspreading. The aqueous solutions of Mg(AOTSiC)₂ are much more stable than trisiloxane solutions and retain the same spreading performance for at least 45 days. Comparison of the spreading kinetics with dynamic surface tension revealed that Mg(AOTSiC)₂ requires a 10 fold faster equilibration rate at the air/water interface to demonstrate the same spreading kinetics as trisiloxane superspreaders. Addition of 20 % glycerol to the Mg(AOTSiC)₂ solutions suppressed superspreading by slowing down surfactant diffusion; then only surfactant enhanced spreading with a time dependence of spread area S ∼ t^0.8 was observed.

Original language	English
Article number	125277
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	604
Early online date	10 Jul 2020
DOIs	https://doi.org/10.1016/j.colsurfa.2020.125277
Publication status	Published - 5 Nov 2020

Keywords

Aqueous surfactant solutions
Complete wetting
Dynamic surface tension
Solid substrate
Spreading kinetics
Superspreading

ASJC Scopus subject areas

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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10.1016/j.colsurfa.2020.125277Licence: Creative Commons: Attribution (CC BY)

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Cite this

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title = "Superspreading performance of branched ionic trimethylsilyl surfactant Mg(AOTSiC)2",

abstract = "The spreading performance of aqueous solutions containing a novel branched trimethylsilyl hedgehog ionic surfactant, Mg(AOTSiC)2, was compared with that of trisiloxane superspreaders on a hydrophobic polyvinylidenefluoride substrate. The work shows that Mg(AOTSiC)2 is a superspreader with spreading kinetics similar to trisiloxane surfactants, demonstrating that a hammer-like molecular architecture is not a necessary requirement for superspreading. The aqueous solutions of Mg(AOTSiC)2 are much more stable than trisiloxane solutions and retain the same spreading performance for at least 45 days. Comparison of the spreading kinetics with dynamic surface tension revealed that Mg(AOTSiC)2 requires a 10 fold faster equilibration rate at the air/water interface to demonstrate the same spreading kinetics as trisiloxane superspreaders. Addition of 20 % glycerol to the Mg(AOTSiC)2 solutions suppressed superspreading by slowing down surfactant diffusion; then only surfactant enhanced spreading with a time dependence of spread area S ∼ t0.8 was observed.",

keywords = "Aqueous surfactant solutions, Complete wetting, Dynamic surface tension, Solid substrate, Spreading kinetics, Superspreading",

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AU - Sagisaka, Masanobu

AU - Osaki, Suzuna

AU - Simmons, Mark J.H.

PY - 2020/11/5

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N2 - The spreading performance of aqueous solutions containing a novel branched trimethylsilyl hedgehog ionic surfactant, Mg(AOTSiC)2, was compared with that of trisiloxane superspreaders on a hydrophobic polyvinylidenefluoride substrate. The work shows that Mg(AOTSiC)2 is a superspreader with spreading kinetics similar to trisiloxane surfactants, demonstrating that a hammer-like molecular architecture is not a necessary requirement for superspreading. The aqueous solutions of Mg(AOTSiC)2 are much more stable than trisiloxane solutions and retain the same spreading performance for at least 45 days. Comparison of the spreading kinetics with dynamic surface tension revealed that Mg(AOTSiC)2 requires a 10 fold faster equilibration rate at the air/water interface to demonstrate the same spreading kinetics as trisiloxane superspreaders. Addition of 20 % glycerol to the Mg(AOTSiC)2 solutions suppressed superspreading by slowing down surfactant diffusion; then only surfactant enhanced spreading with a time dependence of spread area S ∼ t0.8 was observed.

AB - The spreading performance of aqueous solutions containing a novel branched trimethylsilyl hedgehog ionic surfactant, Mg(AOTSiC)2, was compared with that of trisiloxane superspreaders on a hydrophobic polyvinylidenefluoride substrate. The work shows that Mg(AOTSiC)2 is a superspreader with spreading kinetics similar to trisiloxane surfactants, demonstrating that a hammer-like molecular architecture is not a necessary requirement for superspreading. The aqueous solutions of Mg(AOTSiC)2 are much more stable than trisiloxane solutions and retain the same spreading performance for at least 45 days. Comparison of the spreading kinetics with dynamic surface tension revealed that Mg(AOTSiC)2 requires a 10 fold faster equilibration rate at the air/water interface to demonstrate the same spreading kinetics as trisiloxane superspreaders. Addition of 20 % glycerol to the Mg(AOTSiC)2 solutions suppressed superspreading by slowing down surfactant diffusion; then only surfactant enhanced spreading with a time dependence of spread area S ∼ t0.8 was observed.

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