Study on Oppositely Charged Polymer and Surfactant Mixture for Enhancing Oil Production

2019 ◽  
Author(s):  
Limin Xu ◽  
Ming Han ◽  
Xuan Zhang ◽  
Alhasan Fuseni
Keyword(s):  
Oil Production ◽  
Surfactant Mixture ◽  
Charged Polymer ◽  
Oppositely Charged

scholarly journals Charge Modification as a Mechanism for Tunable Properties in Polymer–Surfactant Complexes

Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2800
Author(s):  
Christopher Hill ◽  
Wasiu Abdullahi ◽  
Robert Dalgliesh ◽  
Martin Crossman ◽  
Peter Charles Griffiths
Keyword(s):  
Phase Space ◽  
Sodium Dodecylsulfate ◽  
Phase Behaviour ◽  
Hydroxyethyl Cellulose ◽  
Charge Ratio ◽  
Modified Polymers ◽  
Novel Approach ◽  
Charged Polymer ◽  
Polymer Surfactant ◽  
Oppositely Charged

Oppositely charged polymer–surfactant complexes are frequently explored as a function of phase space defined by the charge ratio Z, (where Z = [+polymer]/[−surfactant]), commonly accessed through the surfactant concentration. Tuning the phase behaviour and related properties of these complexes is an important tool for optimising commercial formulations; hence, understanding the relationship between Z and bulk properties is pertinent. Here, within a homologous series of cationic hydroxyethyl cellulose (cat-HEC) polymers with minor perturbations in the degree of side chain charge modification, phase space is instead explored through [+polymer] at fixed Cpolymer. The nanostructures were characterised by small-angle neutron scattering (SANS) in D2O solutions and in combination with the oppositely charged surfactant sodium dodecylsulfate (h- or d-SDS). Scattering consistent with thin rods with an average radius of ∼7.7 Å and length of ∼85 Å was observed for all cat-HEC polymers and no significant interactions were shown between the neutral HEC polymer and SDS (CSDS < CMC). For the charge-modified polymers, interactions with SDS were evident and the radius of the formed complexes grew up to ∼15 Å with increasing Z. This study demonstrates a novel approach in which the Z phase space of oppositely charged polymer–surfactant complexes can be controlled at fixed concentrations.

Morphological Transition of Oppositely Charged Calix[4]arene Surfactant Mixture

Langmuir ◽  
2018 ◽  
Vol 34 (40) ◽  
pp. 12109-12115 ◽  
Author(s):  
Ji Ha Lee ◽  
Shota Fujii ◽  
Rintaro Takahashi ◽  
Kazuo Sakurai
Keyword(s):  
Morphological Transition ◽  
Surfactant Mixture ◽  
Oppositely Charged
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