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Barbosa GD, Tavares FW, Striolo A. Molecular Interactions of Perfluorinated and Branched Fluorine-Free Surfactants at Interfaces: Insights from a New Reliable Force Field. J Chem Theory Comput 2024. [PMID: 39140228 DOI: 10.1021/acs.jctc.4c00459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) constitute a class of synthetic compounds with exceptional interfacial properties. Their widespread use in many industrial applications and consumer products, combined with their remarkable chemical and thermal stability, has led to their ubiquitous presence in environmental matrices, including surface water and groundwater. To replace PFAS with fluorine-free surfactants, it is necessary first to develop a deep molecular-level understanding of the mechanisms responsible for the exceptional properties of PFAS. For instance, it has been shown that fluorine-free surfactants with highly branched or methylated chains can achieve low surface tensions at air-water interfaces and can provide highly hydrophobic surface coatings. Although molecular simulations combined with experiments are promising for uncovering these mechanisms, the reliability of simulation results depends strongly on the accuracy of the force fields implemented. At the moment, atomistic force fields are not available to describe PFAS in a variety of environments. Ab initio methods could help fill this knowledge gap, but they are computationally demanding. As an alternative, ab initio calculations could be used to develop accurate force fields for atomistic simulations. In this work, a new algorithm is proposed, which, built from accurate ab initio calculations, yields force fields for perfluorinated sulfonic and perfluoroalkyl acids. The accuracy of the new force field was benchmarked against solvation free energy and interfacial tension data. The new force fields were then used to probe the interfacial behavior of the PFAS surfactants. The interfacial properties observed in our simulations were compared with those manifested by two branched fluorine-free surfactants. The good agreement achieved with experiments and ab initio calculations suggests that the proposed protocol could be implemented to study other perfluorinated substances and help in the design of fluorine-free surfactants for targeted applications.
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Affiliation(s)
- Gabriel D Barbosa
- School of Sustainable Chemical, Biological and Materials Engineering, The University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Frederico W Tavares
- Escola de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-909, Brazil
| | - Alberto Striolo
- School of Sustainable Chemical, Biological and Materials Engineering, The University of Oklahoma, Norman, Oklahoma 73019, United States
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2
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Lu H, Bao L, Dong Q, Li X, Dong J. Coal-Based Branched Vicinal Diol Ethoxylates Versus Guerbet Alcohol Ethoxylates: Role of Tertiary Hydroxyl Groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:12539-12552. [PMID: 38842621 DOI: 10.1021/acs.langmuir.4c00965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Branched surfactants exhibit a lower surface tension, excellent low defoaming performance, and better wetting ability compared with linear surfactants, making them promising for applications in industrial cleaning. In this study, 2-hexyl-1-decene (C8 olefin dimer), obtained from the dimerization of 1-octene, was used as the hydrophobe to synthesize branched nonionic surfactants via hydroxylation and ethoxylation. The hydroxylation of the C8 olefin dimer to synthesize 2-hexyldecane-1,2-diol (C8 BD) using H2O2 and HCOOH was investigated systematically. Under the optimal reaction conditions (H2O2/C8 olefin dimer molar ratio: 1.5, HCOOH/C8 olefin dimer molar ratio: 4.0, reaction time: 10 h, reaction temperature: 50 °C), the conversion of the C8 olefin dimer and selectivity toward C8 BD were found to reach 99.96 and 79.89%, respectively. Further, branched nonionic surfactants (C8 BDEn) were synthesized via ethoxylation of C8 BD with ethylene oxide and characterized using FTIR, LCMS, 1H NMR, and 13C NMR techniques. The presence of a tertiary hydroxyl group in C8 BD increases the reactivity of the primary hydroxyl group, leading to a narrower range of products and lower residual substrate content. The physicochemical properties and surface properties of C8 BDEn with different degrees of ethoxylation at various concentrations were investigated and compared with those of commercially available Guerbet alcohol polyoxyethylene ethers (C8 GAEO9 and C6 GAEO9). The results show that, compared with C8 GAEO9 and C6 GAEO9, C8 BDE6 displayed a higher surface activity with a lower equilibrium surface tension (27.14 mN·m-1), superior wettability with a smaller contact angle (39.2°), better emulsification performance with a longer emulsification time of 548 s, and excellent foaming properties (initial foam volume of 11.6 mL). This strategy of utilizing coal-based α-olefins for the synthesis of branched nonionic surfactants presents a route to prepare value-added fine chemicals from coal-based resources.
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Affiliation(s)
- Haochuan Lu
- College of Chemical Engineering and Technology, Shanxi Key Laboratory of Chemical Product Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Lining Bao
- College of Chemical Engineering and Technology, Shanxi Key Laboratory of Chemical Product Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Qingwen Dong
- College of Chemical Engineering and Technology, Shanxi Key Laboratory of Chemical Product Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Xu Li
- College of Chemical Engineering and Technology, Shanxi Key Laboratory of Chemical Product Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
| | - Jinxiang Dong
- College of Chemical Engineering and Technology, Shanxi Key Laboratory of Chemical Product Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
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3
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Hammond O, Morris DC, Bousrez G, Li S, de Campo L, Recsei C, Moir M, Glavatskih S, Rutland MW, Mudring AV. Small-Angle Neutron Scattering Insights into 2-Ethylhexyl Laurate: A Remarkable Bioester. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2024; 12:1816-1821. [PMID: 38333201 PMCID: PMC10848283 DOI: 10.1021/acssuschemeng.3c04736] [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: 07/28/2023] [Revised: 11/17/2023] [Accepted: 11/17/2023] [Indexed: 02/10/2024]
Abstract
Commercial (protiated) samples of the "green" and biodegradable bioester 2-ethylhexyl laurate (2-EHL) were mixed with D-2-EHL synthesized by hydrothermal deuteration, with the mixtures demonstrating bulk structuring in small-angle neutron scattering measurements. Analysis in a polymer scattering framework yielded a radius of gyration (Rg) of 6.5 Å and a Kuhn length (alternatively described as the persistence length or average segment length) of 11.2 Å. Samples of 2-EHL dispersed in acetonitrile formed self-assembled structures exceeding the molecular dimensions of the 2-EHL, with a mean aggregation number (Nagg) of 3.5 ± 0.2 molecules across the tested concentrations. We therefore present structural evidence that this ester can function as a nonionic (co)surfactant. The available surfactant-like conformations appear to enable performance beyond the low calculated hydrophilic-lipophilic balance value of 2.9. Overall, our data offer an explanation for 2-EHL's interfacial adsorption properties via self-assembly, resulting in strong emolliency and lubricity for this sustainable ester-based bio-oil.
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Affiliation(s)
- Oliver
S. Hammond
- Department
of Biological and Chemical Engineering and iNANO, Aarhus University, Aarhus
C 8000, Denmark
- Department
of Materials and Environmental Chemistry, Stockholm University, Stockholm 114 18, Sweden
| | - Daniel C. Morris
- School
of Chemical Engineering, University of New
South Wales, Sydney 2052, Australia
| | - Guillaume Bousrez
- Department
of Biological and Chemical Engineering and iNANO, Aarhus University, Aarhus
C 8000, Denmark
- Department
of Materials and Environmental Chemistry, Stockholm University, Stockholm 114 18, Sweden
| | - Sichao Li
- Division
of Surface and Corrosion Science, School of Engineering Sciences in
Chemistry, Biotechnology and Health, KTH
Royal Institute of Technology, Stockholm 100 44, Sweden
| | - Liliana de Campo
- Australian
Centre for Neutron Scattering, ANSTO, Lucas Heights, New South Wales 2234, Australia
| | - Carl Recsei
- National
Deuteration Facility, ANSTO, Lucas
Heights, New South Wales 2234, Australia
| | - Michael Moir
- National
Deuteration Facility, ANSTO, Lucas
Heights, New South Wales 2234, Australia
| | - Sergei Glavatskih
- Department
of Engineering Design, KTH Royal Institute
of Technology, Stockholm 100 44, Sweden
- Department
of Electromechanical, Systems and Metal Engineering, Ghent University, Ghent 9052, Belgium
- School
of Chemistry, University of New South Wales, Sydney 2052, Australia
| | - Mark W. Rutland
- Division
of Surface and Corrosion Science, School of Engineering Sciences in
Chemistry, Biotechnology and Health, KTH
Royal Institute of Technology, Stockholm 100 44, Sweden
- School
of Chemistry, University of New South Wales, Sydney 2052, Australia
- Laboratoire
de Tribologie et Dynamique des Systèmes, École Central
de Lyon, Lyon 69130, France
| | - Anja-Verena Mudring
- Department
of Biological and Chemical Engineering and iNANO, Aarhus University, Aarhus
C 8000, Denmark
- Department
of Materials and Environmental Chemistry, Stockholm University, Stockholm 114 18, Sweden
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4
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Li Z, Feng X, Luo S, Ding Y, Zhang Z, Shang Y, Lei D, Cai J, Zhao J, Zheng L, Gao M. High drug loading hydrophobic cross-linked dextran microspheres as novel drug delivery systems for the treatment of osteoarthritis. Asian J Pharm Sci 2023; 18:100830. [PMID: 37588991 PMCID: PMC10425896 DOI: 10.1016/j.ajps.2023.100830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/03/2023] [Accepted: 07/06/2023] [Indexed: 08/18/2023] Open
Abstract
Drug delivery via intra-articular (IA) injection has proved to be effective in osteoarthritis (OA) therapy, limited by the drug efficiency and short retention time of the drug delivery systems (DDSs). Herein, a series of modified cross-linked dextran (Sephadex, S0) was fabricated by respectively grafting with linear alkyl chains, branched alkyl chains or aromatic chain, and acted as DDSs after ibuprofen (Ibu) loading for OA therapy. This DDSs expressed sustained drug release, excellent anti-inflammatory and chondroprotective effects both in IL-1β induced chondrocytes and OA joints. Specifically, the introduction of a longer hydrophobic chain, particularly an aromatic chain, distinctly improved the hydrophobicity of S0, increased Ibu loading efficiency, and further led to significantly improving OA therapeutic effects. Therefore, hydrophobic microspheres with greatly improved drug loading ratio and prolonged degradation rates show great potential to act as DDSs for OA therapy.
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Affiliation(s)
- Zhimin Li
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
- Department of Spine and Osteopathic Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Xianjing Feng
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
| | - Shixing Luo
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
- Department of Orthopedics, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, Guangxi 536000, China
| | - Yanfeng Ding
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
- Department of Spine and Osteopathic Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Zhi Zhang
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
- Department of Orthopaedics Trauma and Hand Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Yifeng Shang
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
| | - Doudou Lei
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
| | - Jinhong Cai
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
| | - Jinmin Zhao
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
- Department of Orthopaedics Trauma and Hand Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Guangxi Key Laboratory of Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Li Zheng
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
- Guangxi Key Laboratory of Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Ming Gao
- Guangxi Engineering Center in Biomedical Materials for Tissue and Organ Regeneration, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co- constructed by the Province and Ministry, Guangxi Medical University, Nanning 530021, China
- Guangxi Key Laboratory of Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
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5
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Li H, Chen J, Yang J, Tan Z, Li L, Xiao F, An Z, Ma C, Liu Y, Wang L, Zhang X, Guo H. Association of exposure to perfluoroalkyl substances and risk of the acute coronary syndrome: A case-control study in Shijiazhuang Hebei Province. CHEMOSPHERE 2023; 313:137464. [PMID: 36495974 DOI: 10.1016/j.chemosphere.2022.137464] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 11/03/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Exposures to perfluoroalkyl substances (PFAS) have been reported to increase the risk of atherosclerosis. Therefore, PFAS exposure may be linked to the risk of acute coronary syndrome (ACS), but this association remains uncertain. The objective of the present study was to investigate the association between PFAS exposure and ACS risk through a case-control study. The study included 355 newly diagnosed ACS cases and 355 controls matched by age (within 5 years) and sex. Twelve PFAS were measured in plasma by ultra-high-performance liquid chromatography-tandem mass spectrometry. The conditional logistic regression models were performed to investigate the association between the single and multiple PFAS and ACS risk. Furthermore, we investigated the association of PFAS mixture exposure with ACS risk using a quantile-based g-computation (qgcomp) approach. A mediating effect model was used to assess the mediating effect of platelet indices on the association between PFAS and ACS risk. The results showed that perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) were significantly positively associated with ACS risk in the multiple-PFAS model 2, and this effect was not significant in females. The odds ratios (95% confidence intervals) for PFAS (z-score PFAS) and ACS risk were 1.51 (1.07, 2.15) for PFOA and 1.77 (1.15, 2.72) for PFOS. The dose-response relationships revealed an increasing trend for ACS risk with PFOA and PFOS and decreasing trend for perfluorohexane sulfonic acid (PFHxS) and perfluorodecanoic acid (PFDA). There was no significant correlation between PFAS mixture exposure and ACS risk. Analysis of mediation indicated that platelet count mediated the relationship between PFOS and ACS risk. Our study suggests that higher levels of PFOA and PFOS, and lower levels of PFHxS and PFDA may increase the risk of ACS. However, the reported negative associations should not be considered as protective, and uncertain unresolved confounding may contribute to this result.
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Affiliation(s)
- Haoran Li
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China; Department of Pharmacy, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Jinbo Chen
- Department of Cardiology, The Second Hospital of Shijiazhuang, Shijiazhuang, 050057, China
| | - Jing Yang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Zhenzhen Tan
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Longfei Li
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Fang Xiao
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Ziwen An
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Chaoying Ma
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Yi Liu
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Lei Wang
- Department of Medicinal Chemistry, Hebei Medical University, Shijiazhuang, 050017, China
| | - Xiaoguang Zhang
- Core Facilities and Centers of Hebei Medical University, Shijiazhuang, 050017, China
| | - Huicai Guo
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Environment and Human Health, Shijiazhuang, 050017, China.
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6
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Kanovsky N, Iline-Vul T, Margel S. In-situ design of hierarchical durable silica-based coatings on polypropylene films with superhydrophilic, superhydrophobic and self-cleaning properties. RESULTS IN SURFACES AND INTERFACES 2023. [DOI: 10.1016/j.rsurfi.2023.100101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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7
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Dong Q, Li X, Dong J. Synthesis of a branched surfactant from the castor derivative and its surface properties. Phys Chem Chem Phys 2022; 24:23612-23621. [PMID: 36134472 DOI: 10.1039/d2cp02298b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of ricinoleic acid-derived branched surfactant with a Y-shaped structure (ethoxylated monohydroxy stearic acid methyl ester, 12-HMEEn) was synthesized and characterized by introducing a polyoxyethylene head group in the hydroxyl position inside the molecule. The physicochemical properties and surface activities of 12-HMEEn with different degrees of ethoxylation at various concentrations were studied. The typical Y-shaped structure of the molecule facilitates its adsorption at the interface, which provides an excellent surface activity and affects its surfactant properties significantly. The dynamic contact angle, wettability, foaming properties, and compatibility tests of 12-HMEEn showed that it has good wetting performance, low foaming and fast defoaming properties, and good compatibility in formulation applications, indicating that the surfactant has potential application in industrial cleaning.
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Affiliation(s)
- Qingwen Dong
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Xu Li
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Jinxiang Dong
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China. .,School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
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8
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Yada S, Yoshioka Y, Ohno M, Koda T, Yoshimura T. Adsorption and aggregation properties of homogeneous polyoxyethylene alkyl ether- and ester-type nonionic surfactants with multi-branched double chains. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Jennings J, Webster-Aikman RR, Ward-O’Brien N, Xie A, Beattie DL, Deane OJ, Armes SP, Ryan AJ. Hydrocarbon-Based Statistical Copolymers Outperform Block Copolymers for Stabilization of Ethanol-Water Foams. ACS APPLIED MATERIALS & INTERFACES 2022; 14:39548-39559. [PMID: 35984897 PMCID: PMC9437873 DOI: 10.1021/acsami.2c09910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Well-defined block copolymers have been widely used as emulsifiers, stabilizers, and dispersants in the chemical industry for at least 50 years. In contrast, nature employs amphiphilic proteins as polymeric surfactants whereby the spatial distribution of hydrophilic and hydrophobic amino acids within the polypeptide chains is optimized for surface activity. Herein, we report that polydisperse statistical copolymers prepared by conventional free-radical copolymerization can provide superior foaming performance compared to the analogous diblock copolymers. A series of predominantly (meth)acrylic comonomers are screened to identify optimal surface activity for foam stabilization of aqueous ethanol solutions. In particular, all-acrylic statistical copolymers comprising trimethylhexyl acrylate and poly(ethylene glycol) acrylate, P(TMHA-stat-PEGA), confer strong foamability and also lower the surface tension of a range of ethanol-water mixtures to a greater extent than the analogous block copolymers. For ethanol-rich hand sanitizer formulations, foam stabilization is normally achieved using environmentally persistent silicone-based copolymers or fluorinated surfactants. Herein, the best-performing fully hydrocarbon-based copolymer surfactants effectively stabilize ethanol-rich foams by a mechanism that resembles that of naturally-occurring proteins. This ability to reduce the surface tension of low-surface-energy liquids suggests a wide range of potential commercial applications.
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10
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Danino D, Zembc T. On the shape and connections of micelles: EM imaging inspiring thermodynamic modelling. Curr Opin Colloid Interface Sci 2022. [DOI: 10.1016/j.cocis.2022.101607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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Glüge J, London R, Cousins IT, DeWitt J, Goldenman G, Herzke D, Lohmann R, Miller M, Ng CA, Patton S, Trier X, Wang Z, Scheringer M. Information Requirements under the Essential-Use Concept: PFAS Case Studies. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:6232-6242. [PMID: 34608797 PMCID: PMC8980108 DOI: 10.1021/acs.est.1c03732] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are a class of substances for which there are widespread concerns about their extreme persistence in combination with toxic effects. It has been argued that PFAS should only be employed in those uses that are necessary for health or safety or are critical for the functioning of society and where no alternatives are available ("essential-use concept"). Implementing the essential-use concept requires a sufficient understanding of the current uses of PFAS and of the availability, suitability, and hazardous properties of alternatives. To illustrate the information requirements under the essential-use concept, we investigate seven different PFAS uses, three in consumer products and four industrial applications. We investigate how much information is available on the types and functions of PFAS in these uses, how much information is available on alternatives, their performance and hazardous properties and, finally, whether this information is sufficient as a basis for deciding on the essentiality of a PFAS use. The results show (i) the uses of PFAS are highly diverse and information on alternatives is often limited or lacking; (ii) PFAS in consumer products often are relatively easy to replace; (iii) PFAS uses in industrial processes can be highly complex and a thorough evaluation of the technical function of each PFAS and of the suitability of alternatives is needed; (iv) more coordination among PFAS manufacturers, manufacturers of alternatives to PFAS, users of these materials, government authorities, and other stakeholders is needed to make the process of phasing out PFAS more transparent and coherent.
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Affiliation(s)
- Juliane Glüge
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Rachel London
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
| | - Ian T. Cousins
- Department of Environmental Science, Stockholm University, SE-10691 Stockholm, Sweden
| | - Jamie DeWitt
- Department of Pharmacology and Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA
| | | | - Dorte Herzke
- Norwegian Institute for Air Research (NILU), Fram Centre, N-9296 Tromsø, Norway, and Institute for Arctic and Marine Biology, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Rainer Lohmann
- Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA
| | - Mark Miller
- National Institute of Environmental Health Science and U.S. Public Health Service, Research Triangle Park, NC 27709, USA
| | - Carla A. Ng
- Departments of Civil & Environmental Engineering, Chemical & Petroleum Engineering, and Environmental & Occupational Health, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Sharyle Patton
- Health and Environment Program, Commonweal, Bolinas, California 94924, USA
| | - Xenia Trier
- European Environment Agency, Kongens Nytorv 6, DK-1050 Copenhagen, Denmark
| | - Zhanyun Wang
- Chair of Ecological Systems Design, Institute of Environmental Engineering, ETH Zürich, 8093 Zürich, Switzerland
| | - Martin Scheringer
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland
- RECETOX, Masaryk University, 625 00 Brno, Czech Republic
- corresponding author:
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12
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Renewable branched-chain sulfonate surfactants by addition of sodium hydrogensulfite to alkyl oleate. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128513] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Dong Q, Li X, Dong J. Synthesis of branched surfactant via ethoxylation of oleic acid derivative and its surface properties. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Abdulameer Salman A. Cationic carbohydrate-based surfactants derived from renewable resources: Trends in synthetic methods. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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15
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Mudring AV, Hammond O. Ionic Liquids and Deep Eutectics as a Transformative Platform for the Synthesis of Nanomaterials. Chem Commun (Camb) 2022; 58:3865-3892. [DOI: 10.1039/d1cc06543b] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ionic liquids (ILs) are becoming a revolutionary synthesis medium for inorganic nanomaterials, permitting more efficient, safer and environmentally benign preparation of high quality products. A smart combination of ILs and...
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Alexander S, Barron AR, Denkov N, Grassia P, Kiani S, Sagisaka M, Shojaei MJ, Shokri N. Foam Generation and Stability: Role of the Surfactant Structure and Asphaltene Aggregates. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shirin Alexander
- Energy Safety Research Institute (ESRI), Swansea University, Bay Campus, Swansea SA1 8EN, U.K
| | - Andrew R. Barron
- Energy Safety Research Institute (ESRI), Swansea University, Bay Campus, Swansea SA1 8EN, U.K
- Arizona Institutes of Resilience (AIR), University of Arizona, Tucson, Arizona 85721, United States
- Department of Chemistry and Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77005, United States
- Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan BE1410, Brunei Darussalam
| | - Nikolai Denkov
- Department of Chemical and Pharmaceutical Engineering, Faculty of Chemistry and Pharmacy, Sofia University, 1 James Bourchier Avenue, 1164 Sofia, Bulgaria
| | - Paul Grassia
- Department of Chemical and Process Engineering, University of Strathclyde, Glasgow G1 1XJ, U.K
| | - Sajad Kiani
- Energy Safety Research Institute (ESRI), Swansea University, Bay Campus, Swansea SA1 8EN, U.K
| | - Masanobu Sagisaka
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Mohammad Javad Shojaei
- Department of Earth Science and Engineering, Imperial College London, London SW7 2BX, U.K
| | - Nima Shokri
- Institute of Geo-Hydroinformatics, Hamburg University of Technology, Am Schwarzenberg-Campus 3 (E), 21073 Hamburg, Germany
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Reeve JR, Thomas RK, Penfold J. Surface Activity of Ethoxylate Surfactants with Different Hydrophobic Architectures: The Effect of Layer Substructure on Surface Tension and Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:9269-9280. [PMID: 34308653 DOI: 10.1021/acs.langmuir.1c01588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A series of nonionic ethoxylate surfactants containing different combinations of alkyl, phenyl, and adamantyl units in nine different arrangements, each combined with penta- and hexa-ethylene glycol groups, were synthesized and purified. The surface properties of all of the surfactants were investigated at the air-water (A-W) interface using surface tension (ST) to determine the limiting surface excess (Γlim), the limiting surface tension (σlim), and the critical micelle concentration (CMC). A smaller selection was investigated at the hydrophilic silica-water interface by neutron reflectometry to obtain the thickness of the adsorbed layer and the total adsorption at the CMC. An unusual and largely unrecognized feature of the ethoxylate group is that it is both hydrophilic and hydrophobic. It was found possible to account for the variation of σlim and Γlim of all of the adsorbed layers in terms of a balance of the estimated STs of the sublayers forming the overall adsorbed layer, including that of the underlying ethoxylate layer. The values of σlim were found to be highest for phenyl- and adamantyl-capped surfactants and lowest mainly when there was more than one methyl group at the surface. However, in terms of the concentration required to reach a given low ST, increasing the number of attached methyl groups was found to be less effective than using a smaller number of better-placed methyl groups. At the solid-liquid interface, adsorption at or above the CMC was in all cases in the form of a fragmented bilayer whose coverage varied approximately linearly with the packing parameter. However, results on the phenyl-capped surfactants showed that the high ST exhibited by these surfactants at the A-W interface becomes a high cohesion energy in the interior of the bilayer and they exhibited significantly higher adsorption than expected from simple packing arguments.
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Affiliation(s)
- James R Reeve
- Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford OX1 3QZ, U.K
| | - Robert K Thomas
- Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford OX1 3QZ, U.K
| | - Jeffrey Penfold
- Rutherford-Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, U.K
- Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford OX1 3QZ, U.K
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19
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Hill C, Umetsu Y, Fujita K, Endo T, Sato K, Yoshizawa A, Rogers SE, Eastoe J, Sagisaka M. Design of Surfactant Tails for Effective Surface Tension Reduction and Micellization in Water and/or Supercritical CO 2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:14829-14840. [PMID: 33228361 DOI: 10.1021/acs.langmuir.0c02835] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The interfacial properties and water-in-CO2 (W/CO2) microemulsion (μE) formation with double- and novel triple-tail surfactants bearing trimethylsilyl (TMS) groups in the tails are investigated. Comparisons of these properties are made with those for analogous hydrocarbon (HC) and fluorocarbon (FC) tail surfactants. Surface tension measurements allowed for critical micelle concentrations (CMC) and surface tensions at the CMC (γCMC) to be determined, resulting in the following trend in surface activity FC > TMS > HC. Addition of a third surfactant tail gave rise to increased surface activity, and very low γCMC values were recorded for the double/triple-tail TMS and HC surfactants. Comparing effective tail group densities (ρlayer) of the respective surfactants allowed for an understanding of how γCMC is affected by both the number of surfactant tails and the chemistry of the tails. These results highlight the important role of tail group chemical structure on ρlayer for double-tail surfactants. For triple-tail surfactants, however, the degree to which ρlayer is affected by tail group architecture is harder to discern due to formation of highly dense layers. Stable W/CO2 μEs were formed by both the double- and the triple-tail TMS surfactants. High-pressure small-angle neutron scattering (HP-SANS) has been used to characterize the nanostructures of W/CO2 μEs formed by the double- and triple-tail surfactants, and at constant pressure and temperature, the aqueous cores of the microemulsions were found to swell with increasing water-to-surfactant ratio (W0). A maximum W0 value of 25 was recorded for the triple-tail TMS surfactant, which is very rare for nonfluorinated surfactants. These data therefore highlight important parameters required to design fluorine-free environmentally responsible surfactants for stabilizing W/CO2 μEs.
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Affiliation(s)
- Christopher Hill
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Yasushi Umetsu
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Kazuki Fujita
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Takumi Endo
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Kodai Sato
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Atsushi Yoshizawa
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Sarah E Rogers
- ISIS-CCLRC, Rutherford Appleton Laboratory, Chilton, Oxon OX11 0QX, United Kingdom
| | - Julian Eastoe
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Masanobu Sagisaka
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
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20
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Adsorption behavior and application performance of branched aliphatic alcohol polyoxyethylene ether phosphate. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125482] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Glüge J, Scheringer M, Cousins IT, DeWitt JC, Goldenman G, Herzke D, Lohmann R, Ng CA, Trier X, Wang Z. An overview of the uses of per- and polyfluoroalkyl substances (PFAS). ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2020. [PMID: 33125022 DOI: 10.31224/osf.io/2eqac] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are of concern because of their high persistence (or that of their degradation products) and their impacts on human and environmental health that are known or can be deduced from some well-studied PFAS. Currently, many different PFAS (on the order of several thousands) are used in a wide range of applications, and there is no comprehensive source of information on the many individual substances and their functions in different applications. Here we provide a broad overview of many use categories where PFAS have been employed and for which function; we also specify which PFAS have been used and discuss the magnitude of the uses. Despite being non-exhaustive, our study clearly demonstrates that PFAS are used in almost all industry branches and many consumer products. In total, more than 200 use categories and subcategories are identified for more than 1400 individual PFAS. In addition to well-known categories such as textile impregnation, fire-fighting foam, and electroplating, the identified use categories also include many categories not described in the scientific literature, including PFAS in ammunition, climbing ropes, guitar strings, artificial turf, and soil remediation. We further discuss several use categories that may be prioritised for finding PFAS-free alternatives. Besides the detailed description of use categories, the present study also provides a list of the identified PFAS per use category, including their exact masses for future analytical studies aiming to identify additional PFAS.
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Affiliation(s)
- Juliane Glüge
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland.
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Glüge J, Scheringer M, Cousins IT, DeWitt JC, Goldenman G, Herzke D, Lohmann R, Ng CA, Trier X, Wang Z. An overview of the uses of per- and polyfluoroalkyl substances (PFAS). ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2020; 22:2345-2373. [PMID: 33125022 PMCID: PMC7784712 DOI: 10.1039/d0em00291g] [Citation(s) in RCA: 530] [Impact Index Per Article: 132.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are of concern because of their high persistence (or that of their degradation products) and their impacts on human and environmental health that are known or can be deduced from some well-studied PFAS. Currently, many different PFAS (on the order of several thousands) are used in a wide range of applications, and there is no comprehensive source of information on the many individual substances and their functions in different applications. Here we provide a broad overview of many use categories where PFAS have been employed and for which function; we also specify which PFAS have been used and discuss the magnitude of the uses. Despite being non-exhaustive, our study clearly demonstrates that PFAS are used in almost all industry branches and many consumer products. In total, more than 200 use categories and subcategories are identified for more than 1400 individual PFAS. In addition to well-known categories such as textile impregnation, fire-fighting foam, and electroplating, the identified use categories also include many categories not described in the scientific literature, including PFAS in ammunition, climbing ropes, guitar strings, artificial turf, and soil remediation. We further discuss several use categories that may be prioritised for finding PFAS-free alternatives. Besides the detailed description of use categories, the present study also provides a list of the identified PFAS per use category, including their exact masses for future analytical studies aiming to identify additional PFAS.
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Affiliation(s)
- Juliane Glüge
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, 8092 Zürich, Switzerland.
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23
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Scermino L, Fabozzi A, De Tommaso G, Valente AJ, Iuliano M, Paduano L, D'Errico G. pH-responsive micellization of an amine oxide surfactant with branched hydrophobic tail. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Lou Y, Dong Y, Wang X, Gong F, Zhao M, Rong Z. Synthesis, Micellization, and Surface Activity of Novel Linear‐Dendritic Carboxylate Surfactants. J SURFACTANTS DETERG 2020. [DOI: 10.1002/jsde.12455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yuning Lou
- School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai 200237 China
| | - Yajuan Dong
- School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai 200237 China
| | - Xiaoyong Wang
- School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai 200237 China
| | - Feirong Gong
- School of Materials Science & Engineering East China University of Science and Technology Shanghai 200237 China
| | - Min Zhao
- School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai 200237 China
| | - Zongming Rong
- School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai 200237 China
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Kiani S, Jones DR, Alexander S, Barron AR. New insights into the interactions between asphaltene and a low surface energy anionic surfactant under low and high brine salinity. J Colloid Interface Sci 2020; 571:307-317. [PMID: 32208201 DOI: 10.1016/j.jcis.2020.03.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 03/02/2020] [Accepted: 03/05/2020] [Indexed: 11/25/2022]
Abstract
HYPOTHESIS The hyperbranched chains on the tail of low surface energy surfactants (LSES) causes lowering of surface free energy and rock wettability alteration, offering significant improvement in oil recovery in asphaltene oil reservoirs. EXPERIMENTS Oil sweep efficiency was determined by fluid displacement in pure brine and LSES-brine solutions in a microfluidic pattern that was representative of a sandstone cross-section. Interfacial tension (IFT), wettability alteration, Raman and X-ray photoelectron spectroscopy (XPS) were used to measure the changes of asphaltene interactions with oil-aged substrate after surface treating with brine and surfactant-brine solutions. FINDINGS The hyperbranched LSES yielded a significant increase in the original-oil-in-place (OOIP) recovery (58%) relative to brine flooding (25%), even in the presence of asphaltene. Raman spectra showed the LSES-brine solutions to be capable of causing change to the asphaltene aggregate size after centrifugation treatment.
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Affiliation(s)
- Sajad Kiani
- Energy Safety Research Institute (ESRI), Swansea University, Bay Campus, Swansea SA1 8EN, UK
| | - Daniel R Jones
- Energy Safety Research Institute (ESRI), Swansea University, Bay Campus, Swansea SA1 8EN, UK
| | - Shirin Alexander
- Energy Safety Research Institute (ESRI), Swansea University, Bay Campus, Swansea SA1 8EN, UK.
| | - Andrew R Barron
- Energy Safety Research Institute (ESRI), Swansea University, Bay Campus, Swansea SA1 8EN, UK; Department of Chemistry, Rice University, Houston, TX 77005, USA; Environmental Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Brunei Darussalam.
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Liquid-repellent textile surfaces using zirconium (Zr)-based porous materials and a polyhedral oligomeric silsesquioxane coating. J Colloid Interface Sci 2020; 563:363-369. [DOI: 10.1016/j.jcis.2019.11.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/06/2019] [Accepted: 11/06/2019] [Indexed: 11/24/2022]
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Pisárčik M, Pupák M, Lukáč M, Devínsky F, Hubčík L, Bukovský M, Horváth B. The Synthesis, Self-Assembled Structures, and Microbicidal Activity of Cationic Gemini Surfactants with Branched Tridecyl Chains. Molecules 2019; 24:molecules24234380. [PMID: 31801214 PMCID: PMC6930597 DOI: 10.3390/molecules24234380] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/25/2019] [Accepted: 11/28/2019] [Indexed: 01/08/2023] Open
Abstract
Cationic gemini surfactants with polymethylene spacer and linear alkyl chains containing an even number of carbon atoms have been extensively studied in the recent past, with the emphasis put on the determination of their aggregation behaviour in aqueous solution and their biological properties. However, the information on the aggregation of branched gemini surfactants with an odd number of carbon atoms in their alkyl chains is only sparsely reported in the literature. To help cover this gap in the research of cationic gemini surfactants, a series of branched bisammonium cationic gemini surfactants with an odd number of carbon atoms in alkyl chains (tridecane-2-yl chains) and a polymethylene spacer with a variable length ranging from 3 to 12 carbon atoms have been synthesized and investigated. Critical micelle concentration, which was determined by three methods, was found to be in the order 10-4 mol/L. A comparison of the obtained data of the novel series of tridecyl chain geminis with those of gemini surfactants with dodecyl chains and an identical spacer structure revealed that structural differences between both series of gemini surfactants result in different aggregation and surface properties for surfactants with 6 and 8 methylene groups in the spacer (N,N'-bis(tridecane-2-yl)-N,N,N',N'-tetramethylhexane-1,6-diaminium dibromide and N,N'-bis(tridecane-2-yl)-N,N,N',N'-tetramethyloctane-1,8-diaminium dibromide) with the cmc values 8.2 × 10-4 mol/L and 6.5 × 10-4 mol/L, respectively, as determined by surface tension measurements. Particle size analysis showed the formation of small stable spherical micelles in the interval between 2.8 and 5 nm and with zeta potential around +50 mV, which are independent of surfactant concentration and increase with the increasing spacer length. Microbicidal activity of 13-s-13 gemini surfactants was found to be efficient against Gram-positive, Gram-negative bacteria and yeast.
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Affiliation(s)
- Martin Pisárčik
- Department of Chemical Theory of Drugs, Faculty of Pharmacy, Comenius University, SK-83232 Bratislava, Slovakia;
- Correspondence:
| | - Matúš Pupák
- State Institute for Drug Control, SK-82508 Bratislava, Slovakia;
| | - Miloš Lukáč
- Department of Chemical Theory of Drugs, Faculty of Pharmacy, Comenius University, SK-83232 Bratislava, Slovakia;
| | | | - Lukáš Hubčík
- Department of Physical Chemistry of Drugs, Faculty of Pharmacy, Comenius University, SK-83232 Bratislava, Slovakia;
| | - Marián Bukovský
- Department of Cell and Molecular Biology of Drugs, Faculty of Pharmacy, Comenius University, SK-83232 Bratislava, Slovakia;
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Chanachichalermwong W, Charoensaeng A, Suriyapraphadilok U. Krafft Point Prediction of Anionic Surfactants Using Group Contribution Method: First‐Order and Higher‐Order Groups. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12290] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Woramet Chanachichalermwong
- The Petroleum and Petrochemical CollegeChulalongkorn University Bangkok Thailand
- Center of Excellence on Petrochemical and Materials Technology Bangkok Thailand
- Special Task Force for Applied Surfactant Research in Petroleum and Environmental ApplicationsChulalongkorn University Bangkok Thailand
| | - Ampira Charoensaeng
- The Petroleum and Petrochemical CollegeChulalongkorn University Bangkok Thailand
- Center of Excellence on Petrochemical and Materials Technology Bangkok Thailand
- Special Task Force for Applied Surfactant Research in Petroleum and Environmental ApplicationsChulalongkorn University Bangkok Thailand
| | - Uthaiporn Suriyapraphadilok
- The Petroleum and Petrochemical CollegeChulalongkorn University Bangkok Thailand
- Center of Excellence on Petrochemical and Materials Technology Bangkok Thailand
- Special Task Force for Applied Surfactant Research in Petroleum and Environmental ApplicationsChulalongkorn University Bangkok Thailand
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Fabozzi A, Russo Krauss I, Vitiello R, Fornasier M, Sicignano L, King S, Guido S, Jones C, Paduano L, Murgia S, D'Errico G. Branched alkyldimethylamine oxide surfactants: An effective strategy for the design of high concentration/low viscosity surfactant formulations. J Colloid Interface Sci 2019; 552:448-463. [PMID: 31151022 DOI: 10.1016/j.jcis.2019.05.052] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 10/26/2022]
Abstract
HYPOTHESIS The rational design of branched-tail surfactants is a suitable strategy to obtain low-viscosity surfactant-rich isotropic aqueous mixtures with negligible effects on biodegradability. This opens a way to the design of concentrated ("water-free") surfactant formulations, highly attractive for their ecological and economic benefits. EXPERIMENTS The aggregation behaviour of N,N-dimethyl-2-propylheptan-1-amine oxide (C10DAO-branched) in aqueous mixtures is investigated across the entire composition range by polarized optical microscopy, small angle X-ray and neutron scattering, electron paramagnetic resonance, and pulse-gradient stimulated echo nuclear magnetic resonance. The humidity scanning quartz crystal microbalance with dissipation monitoring technique is validated as a tool for the fast screening of surfactants phase behaviour. Furthermore, the shear viscosities and viscoelastic moduli of the systems are determined by rheological measurements. FINDINGS With respect to the linear isomer, C10DAO-branched presents a much lower tendency to form lyotropic liquid crystalline phases. Except for a narrow composition and temperature range in which a lamellar structure is observed, C10DAO-branched aqueous mixtures are isotropic liquids whose microstructure changes, with increasing concentration, from micellar solutions to unstructured dispersions of hydrated surfactant molecules. Low-viscosity was found for all these mixtures, including the most concentrated ones. Thus, the introduction of a single short side-chain in the tail is demonstrated to be an effective approach to increase the active concentration in surfactant formulations.
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Affiliation(s)
- Antonio Fabozzi
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, Complesso Universitario di Monte Sant'Angelo, I-80126 Naples, Italy
| | - Irene Russo Krauss
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, Complesso Universitario di Monte Sant'Angelo, I-80126 Naples, Italy; CSGI, Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Florence, Italy
| | - Rosa Vitiello
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, Complesso Universitario di Monte Sant'Angelo, I-80126 Naples, Italy
| | - Marco Fornasier
- Department of Chemical and Geological Sciences, University of Cagliari, s.s. 554 bivio Sestu, Monserrato, CA I-09042, Italy
| | - Luca Sicignano
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, P.le V. Tecchio 80, I-80125 Naples, Italy
| | - Stephen King
- ISIS Pulsed Neutron & Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, United Kingdom
| | - Stefano Guido
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, P.le V. Tecchio 80, I-80125 Naples, Italy
| | - Christopher Jones
- Procter & Gamble Innovation Centre, Strombeek-Bever Temseelan 100, B-1853, Brussels, Belgium
| | - Luigi Paduano
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, Complesso Universitario di Monte Sant'Angelo, I-80126 Naples, Italy; CSGI, Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Florence, Italy
| | - Sergio Murgia
- CSGI, Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Florence, Italy; Department of Chemical and Geological Sciences, University of Cagliari, s.s. 554 bivio Sestu, Monserrato, CA I-09042, Italy.
| | - Gerardino D'Errico
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, Complesso Universitario di Monte Sant'Angelo, I-80126 Naples, Italy; CSGI, Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Florence, Italy.
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Arnaud SP, Wu L, Wong Chang MA, Comerford JW, Farmer TJ, Schmid M, Chang F, Li Z, Mascal M. New bio-based monomers: tuneable polyester properties using branched diols from biomass. Faraday Discuss 2019; 202:61-77. [PMID: 28671209 DOI: 10.1039/c7fd00057j] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A family of monomers, including 2,5-hexandiol, 2,7-octandiol, 2,5-furandicarboxylic acid (FDCA), terephthalic acid (TA), and branched-chain adipic and pimelic acid derivatives, all find a common derivation in the biomass-derived platform molecule 5-(chloromethyl)furfural (CMF). The diol monomers, previously little known to polymer chemistry, have been combined with FDCA and TA derivatives to produce a range of novel polyesters. It is shown that the use of secondary diols leads to polymers with higher glass transition temperatures (Tg) than those prepared from their primary diol equivalents. Two methods of polymerisation were investigated, the first employing activation of the aromatic diacids via the corresponding diacid chlorides and the second using a transesterification procedure. Longer chain diols were found to be more reactive than the shorter chain alternatives, generally giving rise to higher molecular weight polymers, an effect shown to be most pronounced when using the transesterification route. Finally, novel diesters with high degrees of branching in their hydrocarbon chains are introduced as potential monomers for possible low surface energy materials applications.
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Affiliation(s)
- Sacha Pérocheau Arnaud
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
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Sekhar KP, Bangal PR, Nayak RR. A systematic surface studies on the glycolipids to understand the surface adsorption behavior. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.12.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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A Novel Synthetic UV-Curable Fluorinated Siloxane Resin for Low Surface Energy Coating. Polymers (Basel) 2018; 10:polym10090979. [PMID: 30960904 PMCID: PMC6403602 DOI: 10.3390/polym10090979] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/27/2018] [Accepted: 08/28/2018] [Indexed: 11/17/2022] Open
Abstract
Low surface energy materials have attracted much attention due to their properties and various applications. In this work, we synthesized and characterized a series of ultraviolet (UV)-curable fluorinated siloxane polymers with various fluorinated acrylates-hexafluorobutyl acrylate, dodecafluoroheptyl acrylate, and trifluorooctyl methacrylate-grafted onto a hydrogen-containing poly(dimethylsiloxane) backbone. The structures of the fluorinated siloxane polymers were measured and confirmed by proton nuclear magnetic resonance and Fourier transform infrared spectroscopy. Then the polymers were used as surface modifiers of UV-curable commercial polyurethane (DR-U356) at different concentrations (1, 2, 3, 4, 5, and 10 wt %). Among three formulations of these fluorinated siloxane polymers modified with DR-U356, hydrophobic states (91°, 92°, and 98°) were obtained at low concentrations (1 wt %). The DR-U356 resin is only in the hydrophilic state at 59.41°. The fluorine and siloxane element contents were investigated by X-ray photoelectron spectroscopy and the results indicated that the fluorinated and siloxane elements were liable to migrate to the surface of resins. The results of the friction recovering assays showed that the recorded contact angles of the series of fluorinated siloxane resins were higher than the original values after the friction-annealing progressing.
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Pu WF, Du DJ, Tang YL, Wang S. Synthesis of an Alkyl Polyoxyethylene Ether Sulfonate Surfactant and Its Application in Surfactant Flooding. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12169] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wan-Fen Pu
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University; Chengdu China
| | - Dai-Jun Du
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University; Chengdu China
| | - Yan-Li Tang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University; Chengdu China
| | - Song Wang
- Fengcheng Oilfield Production Company; Xinjiang Oilfield Company; Karamay China
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34
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Adsorption behavior of branched polyoxyethylene ether carboxylate surfactants. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.09.050] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Sun X, Jin Y, Li H, Lai S, Pan J, Du W. Synthesis and characterization of novel alkoxy nonionic biosurfactants. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1391700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Xiaopeng Sun
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, China
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu, China
| | - Yong Jin
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, China
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu, China
| | - Hanping Li
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, China
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu, China
| | - Shuangquan Lai
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, China
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu, China
| | - Jiezhou Pan
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, China
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu, China
| | - Weining Du
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, China
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu, China
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36
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Zhang Q, Li Y, Song Y, Fu H, Li J, Wang Z. Properties of vesicles formation of single-chain branched carboxylate anionic surfactant in aqueous solutions. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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37
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Prévost S, Gradzielski M, Zemb T. Self-assembly, phase behaviour and structural behaviour as observed by scattering for classical and non-classical microemulsions. Adv Colloid Interface Sci 2017; 247:374-396. [PMID: 28780230 DOI: 10.1016/j.cis.2017.07.022] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 07/17/2017] [Accepted: 07/17/2017] [Indexed: 11/16/2022]
Abstract
In this review, we discuss the conditions for forming microemulsions, systems which are thermodynamically stable mixtures of oil and water made stable by the presence of an interfacial film containing surface active molecules. There are several types of microemulsions, depending largely on the stiffness of the amphiphilic monolayer that separates the oily and the aqueous micro-domain. We first discuss and compare the phase behaviour of these different types, starting from the classical microemulsion made from a flexible surfactant film but then also moving on to less classical situations: this occurs when the interfacial film is stiff or when microemulsions are formed in the absence of a classical surfactant. In the second part, we relate these different microemulsion types to the structural features as can be determined via different methodologies by small angle scattering (SAS). Using absolute scaling, general theorems as well as fitting under constraints or to pre-supposed shapes in real space or correlation functions in reciprocal space allows to classify all microemulsions into classical flexible, rigid or ultra-flexible microemulsions with either globular, connected cylinder of locally flat interfaces, with the corresponding conductivity and phase stability properties.
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Affiliation(s)
| | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, D-10623 Berlin, Germany.
| | - Thomas Zemb
- Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, D-10623 Berlin, Germany; Institut de Chimie Séparative de Marcoule (ICSM), Bldg 426, Centre de Marcoule, F-30207 Bagnols sur Cèze, France
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38
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Al-Shatty W, Lord AM, Alexander S, Barron AR. Tunable Surface Properties of Aluminum Oxide Nanoparticles from Highly Hydrophobic to Highly Hydrophilic. ACS OMEGA 2017; 2:2507-2514. [PMID: 31457596 PMCID: PMC6641041 DOI: 10.1021/acsomega.7b00279] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
The formation of materials with tunable wettability is important for applications ranging from antifouling to waterproofing surfaces. We report the use of various low-cost and nonhazardous hydrocarbon materials to tune the surface properties of aluminum oxide nanoparticles (NPs) from superhydrophilic to superhydrophobic through covalent functionalization. The hydrocarbon surfaces are compared with a fluorinated surface for wettability and surface energy properties. The role of NPs' hydrophobicity on their dynamic interfacial behavior at the oil-water interface and their ability to form stable emulsions is also explored. The spray-coated NPs provide textured surfaces (regardless of functionality), with water contact angles (θ) of 10-150° based on their surface functionality. The superhydrophobic NPs are able to reduce the interfacial tension of various oil-water interfaces by behaving as surfactants.
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Affiliation(s)
- Wafaa Al-Shatty
- Energy
Safety Research Institute (ESRI), College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN Wales, U.K.
| | - Alex M. Lord
- Centre
for Nanohealth (CNH), College of Engineering, Swansea University, Singleton Park, Swansea, SA2 8PP Wales, U.K.
| | - Shirin Alexander
- Energy
Safety Research Institute (ESRI), College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN Wales, U.K.
| | - Andrew R. Barron
- Energy
Safety Research Institute (ESRI), College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN Wales, U.K.
- Department
of Chemistry, Rice University, 6100 S Main Street, Houston, 77005 Texas, United States
- Department
of Materials Science and Nanoengineering, Rice University, 6100
Main MS-325, Houston, 77005 Texas, United States
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39
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Debnath B, Salunke HG, Shivaprasad SM, Bhattacharyya S. Surfactant-Mediated Resistance to Surface Oxidation in MnO Nanostructures. ACS OMEGA 2017; 2:3028-3035. [PMID: 31457636 PMCID: PMC6641048 DOI: 10.1021/acsomega.7b00622] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 06/15/2017] [Indexed: 05/11/2023]
Abstract
The intrinsic physical properties of nanostructures of metals and their oxides are altered when they are prone to surface oxidation in ambient atmosphere. To overcome this limitation, novel synthesis methodologies are required. In this study, solid octahedral shapes of MnO limit the inward oxygen diffusion compared to that of the MnO-nanoparticle-assembled octahedra. In addition to morphology control, which restricts the thickness of the Mn3O4 surface layer, the binding chemistry of the surfactants plays an essential role. For example, the Mn3O4 surface layer is 0.4 nm thinner with trioctylphosphine oxide than with trioctylamine as the surfactant. The nanostructures were prepared by varying the surfactants, surfactant-to-precursor molar ratio, accelerating agent, and reaction heating rate. The surface oxidation of MnO nano-octahedra was probed by Rietveld analysis of X-ray diffraction patterns and X-ray photoelectron spectroscopy and characterized by magnetic measurements, as the presence of ferrimagnetic Mn3O4 shell on the antiferromagnetic MnO core provides an exchange coupling at the core-shell interface. Thicker the Mn3O4 shell, higher is the exchange-biased hysteresis loop shift.
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Affiliation(s)
- Bharati Debnath
- Department
of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research
(IISER) Kolkata, Mohanpur 741246, India
| | - Hemant G. Salunke
- Technical
Physics Division, Bhabha Atomic Research
Centre, Trombay, Mumbai 400085, India
| | - Sonnada M. Shivaprasad
- International
Centre for Materials Science & Chemistry and Physics of Materials
Unit, Jawaharlal Nehru Centre for Advanced
Scientific Research, Jakkur, Bangalore 560064, India
| | - Sayan Bhattacharyya
- Department
of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research
(IISER) Kolkata, Mohanpur 741246, India
- E-mail:
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40
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Wang M, Fang T, Wang P, Yan Y, Zhang J, Liu B, Sun X. Molecular-Scale Design of Hydrocarbon Surfactant Self-Assembly in Supercritical CO 2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:5291-5297. [PMID: 28485950 DOI: 10.1021/acs.langmuir.7b01176] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Forming wormlike reverse micelles (RMs) by hydrocarbon surfactant self-assembly is an economic and environmental strategy to improve the physicochemical properties of supercritical carbon dioxide (scCO2), but it remains challenging. Introducing cosurfactant in hydrocarbon surfactant self-assembly system is a potential method to generate wormlike RMs. Here, adopting molecular dynamics simulations, we performed hydrocarbon surfactant (TC14) self-assembly with introducing cosurfactants (C8Benz). It is found that adding the C8Benz molecules will induce the spherical RMs to a short rodlike form. In this case, the microstructure of the short rodlike RMs shows a dumbbell-like form that is composed by three parts including a middle part of C8Benz and two parts of TC14 aggregation at both ends of rodlike RMs, which is regarded as the origin of RMs shape transition. Further, the analysis of free energy for RMs fusion indicates that the high fusion ability of C8Benz aggregation drives the formation of the dumbbell-like RMs. Accordingly, enhancing the affinity of the C8Benz is found to be effective strategy to further fusion of rodlike RMs in end-to-end manner, yielding a wormlike RMs with a beads-on-a-string structure. It is expected that this work will provide a valuable information for design the hydrocarbon wormlike RMs and facilitate the potential application of scCO2.
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Affiliation(s)
- Muhan Wang
- College of Science and ‡Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong, China University of Petroleum , 266580 Qingdao, Shandong, China
| | - Timing Fang
- College of Science and ‡Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong, China University of Petroleum , 266580 Qingdao, Shandong, China
| | - Pan Wang
- College of Science and ‡Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong, China University of Petroleum , 266580 Qingdao, Shandong, China
| | - Youguo Yan
- College of Science and ‡Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong, China University of Petroleum , 266580 Qingdao, Shandong, China
| | - Jun Zhang
- College of Science and ‡Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong, China University of Petroleum , 266580 Qingdao, Shandong, China
| | - Bing Liu
- College of Science and ‡Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong, China University of Petroleum , 266580 Qingdao, Shandong, China
| | - Xiaoli Sun
- College of Science and ‡Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong, China University of Petroleum , 266580 Qingdao, Shandong, China
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41
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Knight AW, Qiao B, Chiarizia R, Ferru G, Forbes T, Ellis RJ, Soderholm L. Subtle Effects of Aliphatic Alcohol Structure on Water Extraction and Solute Aggregation in Biphasic Water/n-Dodecane. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3776-3786. [PMID: 28375007 DOI: 10.1021/acs.langmuir.6b04657] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Organic phase aggregation behavior of 1-octanol and its structural isomer, 2-ethylhexanol, in a biphasic n-dodecane-water system is studied with a combination of physical measurement, small-angle X-ray scattering (SAXS), and atomistic molecular dynamic simulations. Physical properties of the organic phases are probed following their mixing and equilibration with immiscible water phases. Studies reveal that the interfacial tension decreases as a function of increasing alcohol concentration over the solubility range of the alcohol with no evidence for a critical aggregate concentration (cac). An uptake of water into the organic phases is quantified, as a function of alcohol content, by Karl Fischer titrations. The extraction of water into dodecane was further assessed as a function of alcohol concentration via the slope-analysis method sometimes employed in chemical separations. This method provides a qualitative understanding of solute (water/alcohol) aggregation in the organic phase. The physical results are supported by analyses of SAXS data that reveals an emergence of aggregates in n-dodecane at elevated alcohol concentrations. The observed aggregate structure is dependent on the alcohol tail group geometry, consistent with surfactant packing parameter. The formation of these aggregates is discussed at a molecular level, where alcohol-alcohol and alcohol-water H-bonding interactions likely dominate the occurrence and morphology of the aggregates.
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Affiliation(s)
- Andrew W Knight
- Department of Chemistry, E373 CB, University of Iowa , Iowa City, Iowa 52246, United States
| | | | | | | | - Tori Forbes
- Department of Chemistry, E373 CB, University of Iowa , Iowa City, Iowa 52246, United States
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42
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Kumar M, Javid A, Han JG. Surface Energy in Nanocrystalline Carbon Thin Films: Effect of Size Dependence and Atmospheric Exposure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:2514-2522. [PMID: 28206768 DOI: 10.1021/acs.langmuir.6b04463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Surface energy (SE) is the most sensitive and fundamental parameter for governing the interfacial interactions in nanoscale carbon materials. However, on account of the complexities involved of hybridization states and surface bonds, achieved SE values are often less in comparison with their theoretical counterparts and strongly influenced by stability aspects. Here, an advanced facing-target pulsed dc unbalanced magnetron-sputtering process is presented for the synthesis of undoped and H/N-doped nanocrystalline carbon thin films. The time-dependent surface properties of the undoped and H/N-doped nanocrystalline carbon thin films are systematically studied. The advanced plasma process induced the dominant deposition of high-energy neutral carbon species, consequently controlling the intercolumnar spacing of nanodomain morphology and surface anisotropy of electron density. As a result, significantly higher SE values (maximum = 79.24 mJ/m2) are achieved, with a possible window of 79.24-66.5 mJ/m2 by controlling the experimental conditions. The intrinsic (size effects and functionality) and extrinsic factors (atmospheric exposure) are resolved and explained on the basis of size-dependent cohesive energy model and long-range van der Waals interactions between hydrocarbon molecules and the carbon surface. The findings anticipate the enhanced functionality of nanocrystalline carbon thin films in terms of selectivity, sensitivity, and stability.
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Affiliation(s)
- Manish Kumar
- Center for Advanced Plasma Surface Technology (CAPST), NU-SKKU Joint Institute for Plasma-Nano Materials (IPNM), Advanced Materials Science and Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
| | - Amjed Javid
- Center for Advanced Plasma Surface Technology (CAPST), NU-SKKU Joint Institute for Plasma-Nano Materials (IPNM), Advanced Materials Science and Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
- Department of Textile Processing, National Textile University , Faisalabad 37610, Pakistan
| | - Jeon Geon Han
- Center for Advanced Plasma Surface Technology (CAPST), NU-SKKU Joint Institute for Plasma-Nano Materials (IPNM), Advanced Materials Science and Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea
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43
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Comelles F, Ribosa I, Gonzalez JJ, Garcia MT. Hexadecyltrimethylammonium bromide (CTA-Br) and 1-butyl-3-methylimidazolium tetrafluoroborate (bmim-BF4) in aqueous solution: An ephemeral binary system. J Colloid Interface Sci 2017; 490:119-128. [DOI: 10.1016/j.jcis.2016.11.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 11/07/2016] [Accepted: 11/07/2016] [Indexed: 10/20/2022]
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44
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Czajka A, Hill C, Peach J, Pegg JC, Grillo I, Guittard F, Rogers SE, Sagisaka M, Eastoe J. Trimethylsilyl hedgehogs – a novel class of super-efficient hydrocarbon surfactants. Phys Chem Chem Phys 2017; 19:23869-23877. [DOI: 10.1039/c7cp02570j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Presented here are the results for a novel class of hydrocarbon surfactants, termed trimethylsilyl hedgehogs (TMS-hedgehogs), due to the presence of silicon in the tails.
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Affiliation(s)
- Adam Czajka
- School of Chemistry
- University of Bristol
- Bristol
- UK
| | | | | | | | | | - Frédéric Guittard
- University of Nice Sophia Antipolis
- CNRS
- LPMC
- Group surfaces & interfaces
- 06100 Nice
| | - Sarah E. Rogers
- ISIS Neutron and Muon Source
- Rutherford Appleton Laboratory
- Didcot
- UK
| | - Masanobu Sagisaka
- Department of Frontier Materials Chemistry
- Hirosaki University
- Hirosaki
- Japan
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45
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Performance Comparison Between Internal Olefin Sulfonates and Alpha Olefin Sulfonates. J SURFACTANTS DETERG 2016. [DOI: 10.1007/s11743-016-1890-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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46
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Mohamed A, Ardyani T, Bakar SA, Sagisaka M, Ono S, Narumi T, Kubota M, Brown P, Eastoe J. Effect of surfactant headgroup on low-fluorine-content CO2-philic hybrid surfactants. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2016.04.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Phase behavior and interfacial properties of a switchable ethoxylated amine surfactant at high temperature and effects on CO2-in-water foams. J Colloid Interface Sci 2016; 470:80-91. [DOI: 10.1016/j.jcis.2016.02.028] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 02/07/2016] [Accepted: 02/08/2016] [Indexed: 11/18/2022]
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48
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Alexander S, Eastoe J, Lord AM, Guittard F, Barron AR. Branched Hydrocarbon Low Surface Energy Materials for Superhydrophobic Nanoparticle Derived Surfaces. ACS APPLIED MATERIALS & INTERFACES 2016; 8:660-666. [PMID: 26641156 DOI: 10.1021/acsami.5b09784] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a new class of superhydrophobic surfaces created from low-cost and easily synthesized aluminum oxide nanoparticles functionalized carboxylic acids having highly branched hydrocarbon (HC) chains. These branched chains are new low surface energy materials (LSEMs) which can replace environmentally hazardous and expensive fluorocarbons (FCs). Regardless of coating method and curing temperature, the resulting textured surfaces develop water contact angles (θ) of ∼155° and root-mean-square roughnesses (Rq) ≈ 85 nm, being comparable with equivalent FC functionalized surfaces (θ = 157° and Rq = 100 nm). The functionalized nanoparticles may be coated onto a variety of substrates to generate different superhydrophobic materials.
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Affiliation(s)
- Shirin Alexander
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus , Fabian Way, Swansea SA1 8EN, United Kingdom
| | - Julian Eastoe
- School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom
| | - Alex M Lord
- Centre for Nanohealth (CNH), College of Engineering, Swansea University , Singleton Park, SA2 8PP Wales, United Kingdom
| | - Frédéric Guittard
- Group Surfaces & Interfaces, University of Nice Sophia Antipolis and CNRS, LPMC , Parc Valrose, 06100 Nice, France
| | - Andrew R Barron
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus , Fabian Way, Swansea SA1 8EN, United Kingdom
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49
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Synthesis and aggregation behaviors of tail-branched surfactant Guerbet-cetyl trimethyl ammonium chloride. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3771-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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50
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Czajka A, Hazell G, Eastoe J. Surfactants at the Design Limit. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:8205-17. [PMID: 25797065 DOI: 10.1021/acs.langmuir.5b00336] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
This article analyzes how the individual structural elements of surfactant molecules affect surface properties, in particular, the point of reference defined by the limiting surface tension at the aqueous cmc, γcmc. Particular emphasis is given to how the chemical nature and structure of the hydrophobic tails influence γcmc. By comparing the three different classes of surfactants, fluorocarbon, silicone, and hydrocarbon, a generalized surface packing index is introduced which is independent of the chemical nature of the surfactants. This parameter ϕcmc represents the volume fraction of surfactant chain fragments in a surface film at the aqueous cmc. It is shown that ϕcmc is a useful index for understanding the limiting surface tension of surfactants and can be useful for designing new superefficient surfactants.
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Affiliation(s)
- Adam Czajka
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Gavin Hazell
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Julian Eastoe
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
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