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Prasser Q, Steinbach D, Münch AS, Neubert R, Weber C, Uhlmann P, Mertens F, Plamper FA. Interfacial Rearrangements of Block Copolymer Micelles Toward Gelled Liquid-Liquid Interfaces with Adjustable Viscoelasticity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106956. [PMID: 35373537 DOI: 10.1002/smll.202106956] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 02/14/2022] [Indexed: 06/14/2023]
Abstract
Though amphiphiles are ubiquitously used for altering interfaces, interfacial reorganization processes are in many cases obscure. For example, adsorption of micelles to liquid-liquid interfaces is often accompanied by rapid reorganizations toward monolayers. Then, the involved time scales are too short to be followed accurately. A block copolymer system, which comprises poly(ethylene oxide)110 -b-poly{[2-(methacryloyloxy)ethyl]diisopropylmethylammonium chloride}170 (i.e., PEO110 -b-qPDPAEMA170 with quaternized poly(diisopropylaminoethyl methacrylate)) is presented. Its reorganization kinetics at the water/n-decane interface is slowed down by electrostatic interactions with ferricyanide ([Fe(CN)6 ]3- ). This deceleration allows an observation of the restructuring of the adsorbed micelles not only by tracing the interfacial pressure, but also by analyzing the interfacial rheology and structure with help of atomic force microscopy. The observed micellar flattening and subsequent merging toward a physically interconnected monolayer lead to a viscoelastic interface well detectable by interfacial shear rheology (ISR). Furthermore, the "gelled" interface is redox-active, enabling a return to purely viscous interfaces and hence a manipulation of the rheological properties by redox reactions. Additionally, interfacial Prussian blue formation stiffens the interface. Such manipulation and in-depth knowledge of the rheology of complex interfaces can be beneficial for the development of emulsion formulations in industry or medicine, where colloidal stability or adapted permeability is crucial.
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Affiliation(s)
- Quirin Prasser
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, Freiberg, 09599, Germany
| | - Daniel Steinbach
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, Freiberg, 09599, Germany
| | - Alexander S Münch
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
| | - Richard Neubert
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, Freiberg, 09599, Germany
| | - Christian Weber
- Federal Institute for Geosciences and Natural Resources, Stilleweg 2, Hannover, 30655, Germany
| | - Petra Uhlmann
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
| | - Florian Mertens
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, Freiberg, 09599, Germany
- Center for Efficient High Temperature Processes and Materials Conversion ZeHS, TU Bergakademie Freiberg, Winklerstr 5, Freiberg, 09599, Germany
| | - Felix A Plamper
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, Freiberg, 09599, Germany
- Center for Efficient High Temperature Processes and Materials Conversion ZeHS, TU Bergakademie Freiberg, Winklerstr 5, Freiberg, 09599, Germany
- Freiberg Center for Water Research ZeWaF, TU Bergakademie Freiberg, Winklerstraße 5, Freiberg, 09599, Germany
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Ruwoldt J, Simon S, Øye G. Viscoelastic properties of interfacial lignosulfonate films and the effect of added electrolytes. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125478] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Simon S, Ruwoldt J, Sjöblom J. A critical update of experimental techniques of bulk and interfacial components for fluid characterization with relevance to well fluid processing and transport. Adv Colloid Interface Sci 2020; 277:102120. [PMID: 32062168 DOI: 10.1016/j.cis.2020.102120] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/30/2020] [Accepted: 02/02/2020] [Indexed: 11/20/2022]
Abstract
The present article reviews techniques to address central flow assurance and separation issues. It is our purpose to update the need for extended information in order to draw adequate conclusions about the reason for irregularities in production and how this is related to individual components or fractions in the crude oil. Our intention is to show that the mass related analysis (such as SARA, MS etc.) are insufficient for a validation of the early stage predictions concerning irregularities. The review introduces a set of new characterization and fractionation techniques such as interfacial rheology, SANS, and NMR, where the central theme is the functionality of the components and not just their mass. Two crude oil-related issues are addressed: Wax precipitation and deposition, and crude oil/water resolution. First, bulk techniques to characterize wax precipitation are reviewed. The influence of the chemistry of other crude oil components (asphaltenes) and wax inhibitor on the precipitation is highlighted. Secondly, in aqueous systems, interfacial w/o conditions are important for the stability of dispersed systems. Asphaltenes have a crucial and important role in the stability of crude oil emulsions. Here special attention is directed to properties like interfacial viscosity and elasticity as well as the adsorbed layer structure determination. Small molecular changes in these properties will have dramatic influence on the stability of the heterogeneous systems. A good example is inhibitor functionality.
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Affiliation(s)
- Sébastien Simon
- Ugelstad Laboratory, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
| | - Jost Ruwoldt
- Ugelstad Laboratory, Norwegian University of Science and Technology, 7491 Trondheim, Norway
| | - Johan Sjöblom
- Ugelstad Laboratory, Norwegian University of Science and Technology, 7491 Trondheim, Norway
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Simon S, Blanco E, Gao B, Sjöblom J, Passade-Boupat N, Palermo T, Rondon-Gonzalez M. Rheological Properties of Gels Formed at the Oil–Water Interface by the Reaction between Tetrameric Acid and Calcium Ion under Flow Conditions and at the Batch Scale. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02751] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sébastien Simon
- Ugelstad Laboratory, Department of Chemical Engineering, the Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway
| | - Estefania Blanco
- Ugelstad Laboratory, Department of Chemical Engineering, the Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway
| | - Bicheng Gao
- Ugelstad Laboratory, Department of Chemical Engineering, the Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway
| | - Johan Sjöblom
- Ugelstad Laboratory, Department of Chemical Engineering, the Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway
| | | | - Thierry Palermo
- TOTAL S.A., CSTJF - Centre Scientifique et Technique Jean Féger, 64018 Pau, France
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Niroobakhsh Z, LaNasa JA, Belmonte A, Hickey RJ. Rapid Stabilization of Immiscible Fluids using Nanostructured Interfaces via Surfactant Association. PHYSICAL REVIEW LETTERS 2019; 122:178003. [PMID: 31107071 DOI: 10.1103/physrevlett.122.178003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Indexed: 06/09/2023]
Abstract
Surfactant molecules have been extensively used as emulsifying agents to stabilize immiscible fluids. Droplet stability has been shown to be increased when ordered nanoscale phases form at the interface of the two fluids due to surfactant association. Here, we report on using mixtures of a cationic surfactant and long chained alkenes with polar head groups [e.g., cetylpyridinium chloride (CPCl) and oleic acid] to create an ordered nanoscale lamellar morphology at aqueous-oil interfaces. The self-assembled nanostructure at the liquid-liquid interface was characterized using small-angle x-ray scattering, and the mechanical properties were measured using interfacial rheology. We hypothesize that the resulting lamellar morphology at the liquid-liquid interface is driven by the change in critical packing parameter when the CPCl molecules are diluted by the presence of the long chain alkenes with polar head groups, which leads to a spherical micelle-to-lamellar phase transition. The work presented here has larger implications for using nanostructured interfacial material to separate different fluids in flowing conditions for biosystems and in 3D printing technology.
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Affiliation(s)
- Zahra Niroobakhsh
- Department of Civil and Mechanical Engineering, University of Missouri-Kansas City, Kansas City, Missouri 64110, USA
| | - Jacob A LaNasa
- Department of Materials Science & Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Andrew Belmonte
- Department of Materials Science & Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Mathematics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Robert J Hickey
- Department of Materials Science & Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, USA
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Niroobakhsh Z, Litman M, Belmonte A. Flow instabilities due to the interfacial formation of surfactant-fatty acid material in a Hele-Shaw cell. Phys Rev E 2017; 96:053102. [PMID: 29347693 DOI: 10.1103/physreve.96.053102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Indexed: 06/07/2023]
Abstract
We present an experimental study of pattern formation during the penetration of an aqueous surfactant solution into a liquid fatty acid in a Hele-Shaw cell. When a solution of the cationic surfactant cetylpyridinium chloride is injected into oleic acid, a wide variety of fingering patterns are observed as a function of surfactant concentration and flow rate, which are strikingly different than the classic Saffman-Taylor (ST) instability. We observe evidence of interfacial material forming between the two liquids, causing these instabilities. Moreover, the number of fingers decreases with increasing flow rate Q, while the average finger width increases with Q, both trends opposite to the ST case. Bulk rheology on related mixtures indicates a gel-like state. Comparison of experiments using other oils indicates the importance of pH and the carboxylic head group in the formation of the surfactant-fatty acid material.
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Affiliation(s)
- Zahra Niroobakhsh
- Department of Materials Science & Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Matthew Litman
- Department of Mathematics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Andrew Belmonte
- Department of Materials Science & Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Mathematics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
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Subramanian S, Simon S, Sjöblom J. Interfacial dilational rheology properties of films formed at the oil/water interface by reaction between tetrameric acid and calcium ion. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2016.1224718] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Sreedhar Subramanian
- Ugelstad Laboratory, Department of Chemical Engineering, The Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Sébastien Simon
- Ugelstad Laboratory, Department of Chemical Engineering, The Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Johan Sjöblom
- Ugelstad Laboratory, Department of Chemical Engineering, The Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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