Adsorbed Layer Structure of Cationic Surfactants on Clays (Mica Is Not a Typical Substrate for Adsorption Studies)

Langmuir ◽  
2000 ◽  
Vol 16 (7) ◽  
pp. 2995-2996 ◽  
Author(s):  
Jamie C. Schulz ◽  
Gregory G. Warr
Keyword(s):  
Cationic Surfactants ◽  
Layer Structure ◽  
Adsorbed Layer ◽  
Adsorption Studies

Adsorbed layer structure of cationic surfactants on quartz

2001 ◽  
Vol 63 (4) ◽  
Author(s):  
Jamie C. Schulz ◽  
Gregory G. Warr ◽  
Paul D. Butler ◽  
W. A. Hamilton
Keyword(s):  
Cationic Surfactants ◽  
Layer Structure ◽  
Adsorbed Layer

scholarly journals A Kinetic Method for Investigating the Structure of Adsorbed Polymer Layers

1996 ◽  
Vol 14 (4) ◽  
pp. 251-257 ◽  
Author(s):  
S. Minko ◽  
I. Luzinov ◽  
I. Evchuk ◽  
S. Voronov
Keyword(s):  
Induction Period ◽  
Layer Structure ◽  
Critical Concentration ◽  
Kinetic Method ◽  
Adsorbed Layer ◽  
Polymer Chains ◽  
The Poor ◽  
Adsorbed Polymer ◽  
Zno Powder ◽  
Conformation Transition

A kinetic method for investigating the adsorbed layer structure of a polymer (the copolymer of styrene and maleic anhydride) on a ZnO powder surface was developed, the method is based on the model of the heterogeneously inhibited polymerization of styrene ‘filled’ with ZnO powder. The polymerization is preceded by an induction period. The length of this period depends on the concentration of inhibiting sites (n) on the surface of ZnO. The adsorbed polymer blocks such inhibiting sites and the induction period decreases. This model was used to estimate n. A peak was observed in the experimental relationship connecting n with the amount adsorbed. This peak was interpreted as the critical concentration for conformation transition brought about by the interaction of the polymer chains at the surface. Below this concentration adsorbed macromolecules are considered as isolated chains at the surface. This state is characterized by the poor mobility of segments.

The heat exchange intensification under incomplete hydrophobization oil reservoirs

2019 ◽  
Vol 5 (4) ◽  
pp. 58-78
Author(s):  
Rustam Sh. Salikhov ◽  
Ruslan F. Mazitov ◽  
Yuriy V. Pacharukov
Keyword(s):  
Oil Recovery ◽  
Layer Structure ◽  
Adsorbed Layer ◽  
Mathematic Model ◽  
High Viscosity ◽  
Limiting Factor ◽  
Surface Acting ◽  
Thermal Methods ◽  
Acting Agent ◽  
High Viscosity Oil

High-viscosity oil recovery often requires thermal methods of enhanced oil recovery combining surface acting agent (SAA) injection. Thermal treatment allows increasing hydrocarbon movability. Efficiency raisings’ limiting factor of this method includes injecting agent’s thermal loss (water and steam) as well as SAA molecules thermal destruction. This article assesses nanoparticles adding in SAA water solution’s influence. The authors consider a theoretic capability of increasing heat exchange’s inetnsity between oil reservoir and injected agents by means of adding nanoparticles as well as increase of the SAA thermostability’s capability under high temperatures influence. The results of the laboratory experiments on SAA’s adsorbed layer structure on the surface of solid state show the structure’s dependence on SAA concentration in the solution. According to the developed mathematic model, a periodic adsorbed field will lead to the increase of heat transfer coefficient by means of the Nusselt number increment. This will allow increasing efficiency of thermal methods EOR application.

Adsorbed Layer Structure of Cationic Gemini and Corresponding Monomeric Surfactants on Mica

Langmuir ◽  
2006 ◽  
Vol 22 (3) ◽  
pp. 1143-1149 ◽  
Author(s):  
Franck P. Duval ◽  
Raoul Zana ◽  
Gregory G. Warr
Keyword(s):  
Layer Structure ◽  
Adsorbed Layer ◽  
Monomeric Surfactants

Adsorption of copolymers aggregates: From kinetics to adsorbed layer structure

2008 ◽  
Vol 322 (2) ◽  
pp. 365-374 ◽  
Author(s):  
Bogdan Zdyrko ◽  
Pazit Bar-Yosef Ofir ◽  
Alina M. Alb ◽  
Wayne F. Reed ◽  
Maria M. Santore
Keyword(s):  
Layer Structure ◽  
Adsorbed Layer
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