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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Materials Processing Fundamentals
Presentation Title Investigating Short-chain Alcohol Based Microemulsions as Viable Nanoparticle Synthesis Systems: Do Reverse Micelles Form in Ethanol/AOT/<i>n</i>-Heptane Systems?
Author(s) Robyn E. Ridley, Erick Alvarado, Victor R. Vasquez, Olivia A. Graeve
On-Site Speaker (Planned) Robyn E. Ridley
Abstract Scope Through a fundamental study on the effects of ethanol on the phase behavior of sodium bis(2-ethylhexyl) sulfosuccinate (AOT), particularly its ability to form reverse micelles in <i>n</i>-heptane, we consider the efficacy of ethanol/AOT/<i>n</i>-heptane systems for monodisperse nanoparticle synthesis. Using dynamic light scattering, molecular dynamics simulations, and <sup>1</sup>H NMR spectroscopy, we investigate the aggregation behavior of AOT across a wide range of ethanol/AOT/<i>n</i>-heptane compositions. We identify mixed-solvent polarity as a driving factor for surfactant behavior in the system, and conclude reverse micelles do not form at any investigated compositions and likely cannot form in this system regardless of composition. However, other unique surfactant aggregate morphologies which offer new possibilities for nanoparticle shape control, including multilayered cylindrical structures and spherical AOT-in-ethanol structures, are found in this system. A preliminary phase diagram for the ethanol/AOT/<i>n</i>-heptane system is constructed from our results, proving useful in continued studies on system behaviors and synthesis potential.
Proceedings Inclusion? Planned:


A Quantitative Study of Microsegregation Mechanisms in Aluminum Binary Alloys
Contactless Ultrasound in Copper and Nickel Melts
De-mineralization of a High Ash Coal in Acidic Salt Solution
Effects of Al Substitution for Zn on the Non-equilibrium Solidification Behavior of Zn−3Mg Alloys
Empirical Study of Laser Cleaning of Rust, Paint and Mill Scale from Steel Surface
Heterogeneous Microstructure Induced Mechanical Responses in the Welded Joint of EH420 Shipbuilding Steel under High Heat Input Electro-gas Welding
Hot Deformation Behavior and Processing Maps of 9Cr1Mo Rotor Steel
Influence of Laser Intensity and Speed of Scanning on the Ultimate Tensile Strength and Metallurgical Properties of Laser Cladded Ti-6Al-4V+Ni/Ti-6Al-4V Composite Coating
Investigating Short-chain Alcohol Based Microemulsions as Viable Nanoparticle Synthesis Systems: Do Reverse Micelles Form in Ethanol/AOT/n-Heptane Systems?
M-66: Effects of Welding Conditions and Post Weld Heat Treatment on Precipitation of Widmanstätten-austenite of Duplex Stainless Steels
M-68: Experimental and Numerical Investigation on Surface Damage of Cold Rolled Sheet Caused by Inclusion Movement
M-71: Machine Learning Approaches for Prediction Mechanical Properties of Austenitic Stainless Steels
M-72: Morphological and Thermal Analysis of Peruvian Residues from a Sludge Site of an Integrated Steel Plant
M-73: Numerical Study of Inclusion Removal in Gas Stirred and Electromagnetically Stirred Ladles
M-74: Ordered Arrangements of BaTiO3 Powders of Cubic Morphologies
M-77: Thermodynamic Properties of Layered Tetradymite-like Compounds of the Ag–Ge–Sb–Te System
Mathematical Modeling of Strip Slipping on Bridle Roll of Skin Pass Mill During Speed-up Process
Modified Gouy-Chapman-Stern Model of the Aqueous Na-AOT Reverse Micelle Sub-structure with the Addition of Salts
Multiple Crystallization Pathways on Highly Supersaturated Aqueous Solutions
Non-crystallographic Branching in Polymer Crystallization: a Molecular Picture of the Onset of Spherulite Formation
Numerical Modelling of Additive Manufactured Ti-Al-Si-Cu/Ti-6Al-4V Composite by Direct Laser Metal Deposition (DLMD) Technique
Observation of Recrystallization Behavior of Nb-microalloyed Wide Flange Beams during Hot Rolling
Preliminary Research into the Effects of Electric Field & Current on Reactive Processing of Ni 3 Al-CNT Composites
Printed Circuit Board Leached Residue as a Substitute Reducing Agent in Pyrometallurgical Processes
Structural Study of a Levitated Salt Solution Using a Containerless Scattering Method
Structure-thermodynamics Interrelation for the GeO2 and PdO Containing MgO-saturated Ferrous Calcium Silicate (FCS) Slag Relevant to E-waste Processing
Teaching Metal-forming Processes Using a Laboratory Micro-extrusion Press
The Effect of Side Arcs on Current Distributions in Submerged Arc Furnaces for Silicon Production
The Effect of Thermomechanical Processing on the Microstructural Evolution of Nickel-based Alloy 625
Thermodynamic Modeling of as Oxide in the Na2O-CaO-MgO-SiO2 System and its Application to as Oxide Stabilization Process using Glass Formation
Thermodynamic Modeling of Metal Distribution in Electrolytic Extraction

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