Advances in adsorption of surfactants and their mixtures at solid/solution interfaces

Zhang, Rui; Somasundaran, P.

doi:10.1016/j.cis.2006.07.004

Cited by 643 publications

(528 citation statements)

References 84 publications

Supporting

Mentioning

490

Contrasting

Unclassified

Order By: Relevance

“…The cationic headgroups of the surfactants adsorb to the negatively charged mica surface, resulting in a monolayer or an incomplete bilayer on the mica at C < CMC, and a complete fluid bilayer at C ≳ CMC (CMC MTAB = 3.7 mM). 1,15,34 On the PDMS surface, the hydrophobic surfactant tails adsorb, either into or onto, the hydrophobic PDMS chains, with a dilute monolayer forming at C < CMC and a dense monolayer at C ≳ CMC. 1,17,19 Accordingly, the forces between a PDMS surface and a mica surface modified by adsorbed layers of cationic surfactant are dependent on the solution concentration of the cationic surfactant, as shown in Figure 3.…”

Section: Results and Analysismentioning

confidence: 99%

“…1 Amphiphilic ionic surfactants have the versatility to adsorb and self-assemble at either a charged surface through electrostatic interactions with their polar headgroups, or at a hydrophobic surface through interactions with their nonpolar tails. In industrial separation and recovery processessuch as froth flotation, flocculation, and hydraulic fracturingsurfac-tants are vital additives that regulate the wettability and friction at mineral−water interfaces.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Surfactants and Polyelectrolytes on the Interaction between a Negatively Charged Surface and a Hydrophobic Polymer Surface

et al. 2015

View full text Add to dashboard Cite

ABSTRACT:We have measured and characterized how three classes of surface-active molecules self-assemble at, and modulate the interfacial forces between, a negatively charged mica surface and a hydrophobic end-grafted polydimethylsiloxane (PDMS) polymer surface in solution. We provide a broad overview of how chemical and structural properties of surfactant molecules result in different self-assembled structures at polymer and mineral surfaces, by studying three characteristic surfactants: (1) an anionic aliphatic surfactant, sodium dodecyl sulfate (SDS), (2) a cationic aliphatic surfactant, myristyltrimethylammonium bromide (MTAB), and (3) a silicone polyelectrolyte with a long-chain PDMS midblock and multiple cationic end groups. Through surface forces apparatus measurements, we show that the separate addition of three surfactants can result in interaction energies ranging from fully attractive to fully repulsive. Specifically, SDS adsorbs at the PDMS surface as a monolayer and modifies the monotonic electrostatic repulsion to a mica surface. MTAB adsorbs at both the PDMS (as a monolayer) and the mica surface (as a monolayer or bilayer), resulting in concentration-dependent interactions, including a long-range electrostatic repulsion, a shortrange steric hydration repulsion, and a short-range hydrophobic attraction. The cationic polyelectrolyte adsorbs as a monolayer on the PDMS and causes a long-range electrostatic attraction to mica, which can be modulated to a monotonic repulsion upon further addition of SDS. Therefore, through judicious selection of surfactants, we show how to modify the magnitude and sign of the interaction energy at different separation distances between hydrophobic and hydrophilic surfaces, which govern the static and kinetic stability of colloidal dispersions. Additionally, we demonstrate how the charge density of silicone polyelectrolytes modifies both their self-assembly at polymer interfaces and the robust adhesion of thin PDMS films to target surfaces.

show abstract

Section: Results and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Surfactants and Polyelectrolytes on the Interaction between a Negatively Charged Surface and a Hydrophobic Polymer Surface

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Zhang and Somasundaran (2006) discussed several mechanisms for surfactant adsorption. Important are electrostatic interactions between the surfactant and the solid surface.…”

Section: Surfactant Adsorption Process On Carbonates and Its Mitigatimentioning

confidence: 99%

Review of surfactant-assisted chemical enhanced oil recovery for carbonate reservoirs: challenges and future perspectives

et al. 2017

View full text Add to dashboard Cite

“…[1][2][3][4][5][6] Формирование смешан-ных композиций на основе вышеперечисленных строи-тельных блоков способно снизить расход реагентов [1,7] и подключить факторы управления морфологией агре-гатов. [8][9][10][11] Бинарные композиции на основе поверхност-но-активных веществ (ПАВ), [12] полимер-коллоидные комплексы [7] и системы ПАВ-каликсарен [8][9][10] неизменно оказываются в фокусе научных исследований. Однако смешанные системы каликсарен-полимер гораздо менее исследованы, [13,14] несмотря на то что полимеры в данном случае могут играть роль матрицы, облегчая процессы самоорганизации.…”

Section: Introductionunclassified

Aggregation in a Binary System Based on Calix[4]resorcinol with Phosphonium Groups and Hydrophilic Polymers

Gaynanova¹,

Vagapova²,

Knyazeva³

et al. 2016

MHC

View full text Add to dashboard Cite

Advances in adsorption of surfactants and their mixtures at solid/solution interfaces

Cited by 643 publications

References 84 publications

Effects of Surfactants and Polyelectrolytes on the Interaction between a Negatively Charged Surface and a Hydrophobic Polymer Surface

Effects of Surfactants and Polyelectrolytes on the Interaction between a Negatively Charged Surface and a Hydrophobic Polymer Surface

Review of surfactant-assisted chemical enhanced oil recovery for carbonate reservoirs: challenges and future perspectives

Aggregation in a Binary System Based on Calix[4]resorcinol with Phosphonium Groups and Hydrophilic Polymers

Contact Info

Product

Resources

About