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Guillot K, Brahana PJ, Al Harraq A, Ogbonna ND, Lombardo NS, Lawrence J, An Y, Benton MG, Bharti B. Selective Vapor Condensation for the Synthesis and Assembly of Spherical Colloids with a Precise Rough Patch. JACS AU 2024; 4:1107-1117. [PMID: 38559733 PMCID: PMC10976603 DOI: 10.1021/jacsau.3c00812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/08/2024] [Accepted: 02/16/2024] [Indexed: 04/04/2024]
Abstract
Patchy particles occupy an increasingly important space in soft matter research due to their ability to assemble into intricate phases and states. Being able to fine-tune the interactions among these particles is essential to understanding the principles governing the self-assembly processes. However, current fabrication techniques often yield patches that deviate chemically and physically from the native particles, impeding the identification of the driving forces behind self-assembly. To overcome this challenge, we propose a new approach to synthesizing spherical colloids with a well-defined rough patch on their surface. By treating polystyrene microspheres with vapors of a good solvent, here an acetone-water mixture, we achieve selective polymer corrugation on the particle surface resulting in a chemically similar yet rough surface patch. The key step is the selective condensation of the acetone-water vapors on the apex of the polystyrene microparticles immobilized on a substrate, which leads to rough patch formation. We leverage the ability to tune the vapor-liquid equilibrium of the volatile acetone-water mixture to precisely control the polymer corrugation on the particle surface. We demonstrate the dependence of patch formation on particle and substrate wettability, with the condensation occurring on the particle apex only when it is more wettable than the substrate, which is consistent with Volmer's classical nucleation theory. By combining experiments and molecular dynamics simulations, we identify the role of the rough patch in the depletion interaction-driven self-assembly of the microspheres, which is crucial for designing programmable supracolloidal structures.
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Affiliation(s)
| | | | | | - Nduka D. Ogbonna
- Cain Department of Chemical
Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Nicholas S. Lombardo
- Cain Department of Chemical
Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Jimmy Lawrence
- Cain Department of Chemical
Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Yaxin An
- Cain Department of Chemical
Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Michael G. Benton
- Cain Department of Chemical
Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Bhuvnesh Bharti
- Cain Department of Chemical
Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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2
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Paiboon N, Surassmo S, Rungsardthong Ruktanonchai U, Kappl M, Soottitantawat A. Internal gelation of alginate microparticle prepared by emulsification and microfluidic method: Effect of Ca-EDTA as a calcium source. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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3
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Charge Separating Microfiltration Membrane with pH-Dependent Selectivity. Polymers (Basel) 2018; 11:polym11010003. [PMID: 30959987 PMCID: PMC6401782 DOI: 10.3390/polym11010003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 12/10/2018] [Accepted: 12/19/2018] [Indexed: 11/16/2022] Open
Abstract
Membrane filters are designed for selective separation of components from a mixture. While separation by size might be the most common approach, other characteristics like charge can also be used for separation as presented in this study. Here, a polyether sulfone membrane was modified to create a zwitterionic surface. Depending on the pH value of the surrounding solution the membrane surface will be either negatively or positively charged. Thus, the charged state can be easily adjusted even by small changes of the pH value of the solution. Charged polystyrene beads were used as model reagent to investigate the pH dependent selectivity of the membrane. It was found that electrostatic forces are dominating the interactions between polystyrene beads and membrane surface during the filtration. This enables a complete control of the membrane's selectivity according to the electrostatic interactions. Furthermore, differently charged beads marked with fluorescent dyes were used to investigate the selectivity of mixtures of charged components. These different components were successfully separated according to their charged state proving the selectivity of the invented membrane.
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4
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Breite D, Went M, Prager A, Schulze A. The critical zeta potential of polymer membranes: how electrolytes impact membrane fouling. RSC Adv 2016. [DOI: 10.1039/c6ra19239d] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The zeta potential of membrane surfaces and the resulting electrostatic interactions are determining factors of membrane fouling. This publication presents the impact of salt concentration and pH value on these interactions.
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Affiliation(s)
- D. Breite
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - M. Went
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - A. Prager
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - A. Schulze
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
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5
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Breite D, Went M, Thomas I, Prager A, Schulze A. Particle adsorption on a polyether sulfone membrane: how electrostatic interactions dominate membrane fouling. RSC Adv 2016. [DOI: 10.1039/c6ra13787c] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study presents a new method focussing on electrostatic interactions during fouling of microfiltration membranes.
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Affiliation(s)
- D. Breite
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - M. Went
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - I. Thomas
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - A. Prager
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - A. Schulze
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
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6
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Tailoring Membrane Surface Charges: A Novel Study on Electrostatic Interactions during Membrane Fouling. Polymers (Basel) 2015. [DOI: 10.3390/polym7101497] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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7
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Wohl CJ, Kiefer JM, Petrosky BJ, Tiemsin PI, Lowe KT, Maisto PMF, Danehy PM. Synthesis of Fluorophore-Doped Polystyrene Microspheres: Seed Material for Airflow Sensing. ACS APPLIED MATERIALS & INTERFACES 2015; 7:20714-20725. [PMID: 26322378 DOI: 10.1021/acsami.5b05584] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Kiton red 620 (KR620) doped polystyrene latex microspheres (PSLs) were synthesized via soap-free emulsion polymerization to be utilized as a relatively nontoxic, fluorescent seed material for airflow characterization experiments. Poly(styrene-co-styrenesulfonate) was used as the PSL matrix to promote KR620 incorporation. Additionally, a bicarbonate buffer and poly(diallyldimethylammonium chloride), polyD, cationic polymer were added to the reaction solution to stabilize the pH and potentially influence the electrostatic interactions between the PSLs and dye molecules. A design of experiments (DOE) approach was used to efficiently investigate the variation of these materials. Using a 4-factor, 2-level response surface design with a center point, a series of experiments were performed to determine the dependence of these factors on particle diameter, diameter size distribution, fluorescent emission intensity, and KR620 retention. Using statistical analysis, the factors and factor interactions that most significantly affect the outputs were identified. These particles enabled velocity measurements to be made much closer to walls and surfaces than previously. Based on these results, KR620-doped PSLs may be utilized to simultaneously measure the velocity and mixing concentration, among other airflow parameters, in complex flows.
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Affiliation(s)
| | - Jacob M Kiefer
- NASA Langley Research Summer Scholars (LARSS), NASA Langley Research Center , Hampton, Virginia 23681, United States
| | - Brian J Petrosky
- Department of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University , Blacksburg, Virginia 24060, United States
| | - Pacita I Tiemsin
- NASA Langley Research Center , Hampton, Virginia 23681, United States
| | - K Todd Lowe
- Department of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University , Blacksburg, Virginia 24060, United States
| | - Pietro M F Maisto
- Department of Aerospace and Ocean Engineering, Virginia Polytechnic Institute and State University , Blacksburg, Virginia 24060, United States
| | - Paul M Danehy
- NASA Langley Research Center , Hampton, Virginia 23681, United States
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8
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Cho YS. Synthesis of Latex Particles with Surface Functional Groups and Their Applications for the Fabrication of Porous Materials. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2014.966310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Yang CH, Huang KS, Grumezescu AM, Wang CY, Tzeng SC, Chen SY, Lin YH, Lin YS. Synthesis of uniform poly(d,l-lactide) and poly(d,l-lactide-co-glycolide) microspheres using a microfluidic chip for comparison. Electrophoresis 2013; 35:316-22. [DOI: 10.1002/elps.201300185] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 05/20/2013] [Accepted: 05/20/2013] [Indexed: 11/12/2022]
Affiliation(s)
- Chih-Hui Yang
- Department of Biological Science and Technology; I-Shou University; Taiwan
| | - Keng-Shiang Huang
- The School of Chinese Medicine for Post-Baccalaureate; I-Shou University; Taiwan
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxidic Materials and Nanomaterials; Faculty of Applied Chemistry and Materials Science; University Politehnica of Bucharest; Romania
| | - Chih-Yu Wang
- Department of Biomedical Engineering; I-Shou University; Taiwan
| | - Shian-Chiuan Tzeng
- Department of Biological Science and Technology; I-Shou University; Taiwan
| | - Szu-Yu Chen
- Department of Biological Science and Technology; I-Shou University; Taiwan
| | - Yu-Hsin Lin
- Instrument Technology Research Center; National Applied Research Laboratories; Taiwan
| | - Yung-Sheng Lin
- Department of Applied Cosmetology and Master Program of Cosmetic Science; Hungkuang University; Taiwan
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Galea L, Bohner M, Thuering J, Doebelin N, Aneziris CG, Graule T. Control of the size, shape and composition of highly uniform, non-agglomerated, sub-micrometer β-tricalcium phosphate and dicalcium phosphate platelets. Biomaterials 2013; 34:6388-401. [DOI: 10.1016/j.biomaterials.2013.05.026] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 05/16/2013] [Indexed: 11/25/2022]
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Yang CH, Lin YS, Huang KS, Huang YC, Wang EC, Jhong JY, Kuo CY. Microfluidic emulsification and sorting assisted preparation of monodisperse chitosan microparticles. LAB ON A CHIP 2009; 9:145-50. [PMID: 19209347 DOI: 10.1039/b807454b] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
A microfluidic device for generating monodisperse chitosan microparticles and separating the desired particle from smaller particles created as a byproduct of this process was described. The purpose of this study is to separate the satellite droplets from their parent droplets to enhance the size uniformity of the desired microparticles. A double T-junction design was first employed to control the emulsification and the separation, respectively. The results show that the size and gap of the parent droplets are tunable by adjusting the water and oil flow rates. A separation ratio of the satellite droplets of more than 99% was observed. The proposed microfluidic chip is capable of generating relatively uniform micro-droplets with well controllable diameter, and it has the added advantages of being a simple, low cost, and high throughput process. In the future this apparatus can be used to fabricate size-controlled monodisperse microparticles to act as drug carriers for biotechnology and biomedicine applications.
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Affiliation(s)
- Chih-Hui Yang
- Department of Biological Science & Technology, I-Shou University, Taiwan.
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12
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Barros Filho DA, Hisano C, Bertholdo R, Schiavetto MG, Santilli C, Ribeiro SJL, Messaddeq Y. Effects of self-assembly process of latex spheres on the final topology of macroporous silica. J Colloid Interface Sci 2005; 291:448-64. [PMID: 16040043 DOI: 10.1016/j.jcis.2005.05.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2005] [Accepted: 05/09/2005] [Indexed: 11/25/2022]
Abstract
This paper surveys the topology of macroporous silica prepared using latex templates covering the submicrometric range (0.1-0.7 mum). The behavior of latex spheres in aqueous dispersion has been analyzed by dynamic light scattering (DLS) measurement indicating the most appropriate conditions to form well-defined cubic arrays. The optical behavior of latex spheres has been analyzed by transmittance and reflectance measurements in order to determine their diameter and filling factor when they were assembled in bidimensional arrays. Macroscopic templates have been obtained by a centrifugation process and their crystalline ordering has been confirmed by porosimetry and scanning electron microscopy. These self-assembled structures have been used to produce macroporous silica, whose final topology depends on the pore size distribution of the original template. It has been seen that latex spheres are ordered in a predominant fcc arrangement with slipping of tetragonal pores due to the action of attractive electrostatic interactions. The main effect is to change the spherical shape of voids in macroporous silica into a hexagonal configuration with possible applications to fabricate photonic devices with novel optical properties.
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Affiliation(s)
- Djalma A Barros Filho
- Faculdades COC, Rua Abrahão Issa Halack, 980, Ribeirão Preto, São Paulo, 14096-160, Brazil.
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Yamada Y, Sakamoto T, Gu S, Konno M. Soap-free synthesis for producing highly monodisperse, micrometer-sized polystyrene particles up to 6 μm. J Colloid Interface Sci 2005; 281:249-52. [PMID: 15567403 DOI: 10.1016/j.jcis.2004.08.030] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2004] [Accepted: 08/06/2004] [Indexed: 11/21/2022]
Abstract
A soap-free emulsion polymerization method with the use of an amphoteric initiator, currently proposed by the authors for producing highly monodisperse, micrometer-sized polymer particles, was examined in the polymerization of styrene with a 2,2'-azobis [N-(2-carboxyethyl)-2-2-methylpropionamidine] hydrate initiator and an NH(4)OH/NH(4)Cl pH buffer. The pH buffer was used to control the electric surface potential of particles to maintain a stable dispersion of particles and to prevent generation of new particles during the polymerization. Addition of monomer to the reaction system during polymerization could enlarge the average size of polymer particles to 5.7 microm with a coefficient of variation of 1.5%, which is much less than the standard criteria of monodispersity, 10%.
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Affiliation(s)
- Yasuyuki Yamada
- Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, Aoba, Aramaki-aza, Aoba-ku, Sendai 980-8579, Japan
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14
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Gu S, Inukai S, Konno M. Soapfree Synthesis of Monodisperse, Micron-Sized Polystyrene Particles in Aqueous Media. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2003. [DOI: 10.1252/jcej.36.1231] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shunchao Gu
- Department of Chemical Engineering, Tohoku University
| | - Shouji Inukai
- Department of Chemical Engineering, Tohoku University
| | - Mikio Konno
- Department of Chemical Engineering, Tohoku University
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15
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Gu S, Inukai S, Konno M. Preparation of Monodisperse, Micron-Sized Polystyrene Particles with an Amphoteric Initiator in Soapfree Polymerization. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2002. [DOI: 10.1252/jcej.35.977] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shunchao Gu
- Department of Chemical Engineering, Faculty of Engineering, Tohoku University
| | - Shouji Inukai
- Department of Chemical Engineering, Faculty of Engineering, Tohoku University
| | - Mikio Konno
- Department of Chemical Engineering, Faculty of Engineering, Tohoku University
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