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Shi Y, Liu J, Deng J, Cao L, Li L, Shao J, Li J, Xiong D. Tough Bonding of PVA Hydrogel-on-Textured Titanium Alloy with Varying Texture Densities in Swollen State. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13773-13783. [PMID: 38920266 DOI: 10.1021/acs.langmuir.4c00120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Cartilage defects in large joints are a common occurrence in numerous degenerative diseases, especially in osteoarthritis. The hydrogel-on-metal composite has emerged as a potential candidate material, as hydrogels, to some extent, replicate the composition of human articular cartilage consisting of collagen fibers and proteoglycans. However, achieving tough bonding between the hydrogel and titanium alloy remains a significant challenge due to the swelling of the hydrogel in a liquid medium. This swelling results in reduced interfacial toughness between the hydrogel and titanium alloy, limiting its potential clinical applications. Herein, our approach aimed to achieve durable bonding between a hydrogel and a titanium alloy composite in a swollen state by modifying the surface texture of the titanium alloy. Various textures, including circular and triangular patterns, with dimple densities ranging from 10 to 40%, were created on the surface of the titanium alloy. Subsequently, poly(vinyl alcohol) (PVA) hydrogel was deposited onto the textured titanium alloy using a casting-drying method. Our findings revealed that PVA hydrogel on the textured titanium alloy with a 30% texture density exhibited the highest interfacial toughness in the swollen state, measuring at 1300 J m-2 after reaching equilibrium swelling in deionized water, which is a more than 2-fold increase compared to the hydrogel on a smooth substrate. Furthermore, we conducted an analysis of the morphologies of the detached hydrogel from the textured titanium alloy after various swelling durations. The results indicated that interfacial toughness could be enhanced through mechanical interlocking, facilitated by the expanded volume of the hydrogel protrusions as the swelling time increased. Collectively, our study demonstrates the feasibility of achieving tough bonding between a hydrogel and a metal substrate in a liquid environment. This research opens up promising avenues for designing soft/hard heterogeneous materials with strong adhesive properties.
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Affiliation(s)
- Yan Shi
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Jia Liu
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Jinhai Deng
- School of Cancer & Pharmaceutical Sciences, King's College London, London SE1 1UL, United Kingdom
| | - Lulu Cao
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100044, China
| | - Long Li
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Jiaojing Shao
- College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
| | - Jianliang Li
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Dangsheng Xiong
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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2
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Liu M, Ni J, Zhang C, Wang L, Guo Y, Liu Z. Regulation Mechanism of Special Functional Groups Contained in Polymer Molecular Chains on the Tribological Properties of Modified Ti6Al4V. Polymers (Basel) 2023; 15:4060. [PMID: 37896304 PMCID: PMC10609861 DOI: 10.3390/polym15204060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/01/2023] [Accepted: 10/05/2023] [Indexed: 10/29/2023] Open
Abstract
Polymer coatings can effectively improve the surface tribological properties of human implant materials, thereby increasing their service life. In this study, poly(vinylsulfonic acid, sodium salt) (PVS), poly(acrylic acid) (PAA) and poly(vinylphosphonic acid) (PVPA) were used to modify Ti6Al4V surfaces. Experimental analyses were combined with molecular simulation to explore the regulation mechanism of special functional groups contained in polymer molecular chains on the tribological properties of modified surfaces. In addition, the bearing capacities and velocity dependence of different polymer modified surfaces during friction were also explored. The PVS coating, due to physical adsorption, can have an anti-friction effect under NaCl solution lubrication, but is not durable under long-term or repeated usage. Both PAA and PVPA molecular chains can form chemical bonds with Ti6Al4V. Phosphate acid groups can firmly bind to the substrate, and the adsorption of salt ions and water molecules can form a hydrated layer on the PVPA coating surface, achieving ultra-low friction and wear. The adsorption of salt ions would aggravate the surface wear of the PAA-modified Ti6Al4V due to the unfirm binding of carboxyl groups to the substrate, resulting in a high friction coefficient. This study can provide effective guidance for the design of modified polymer coatings on metals.
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Affiliation(s)
- Mengmeng Liu
- School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Jing Ni
- School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Caixia Zhang
- Institute of Advanced Manufacturing and Intelligent Technology, Beijing University of Technology, Beijing 100124, China
| | - Lihui Wang
- Institute of Advanced Manufacturing and Intelligent Technology, Beijing University of Technology, Beijing 100124, China
| | - Yue Guo
- School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Zhifeng Liu
- Key Laboratory of CNC Equipment Reliability, Ministry of Education, Jilin University, Changchun 130012, China
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Han T, Zhao M, Sun C, Zhao R, Xu W, Zhang S, Singh S, Luo J, Zhang C. Macroscale Superlubricity of Hydrated Anions in the Boundary Lubrication Regime. ACS APPLIED MATERIALS & INTERFACES 2023; 15:42094-42103. [PMID: 37625155 DOI: 10.1021/acsami.3c09277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/27/2023]
Abstract
Cations can achieve excellent hydration lubrication at smooth interfaces under both microscale and macroscale conditions due to the boundary layer composed of hydration shells surrounding charges, but what about anions? Commonly used friction pairs are negatively charged at the solid/solution interface. Achieving anionic adsorption through constructing positively charged surfaces is a prerequisite for studying the hydration lubrication of anions. Here we report the hydration layer composed of anions adsorbed on the positively charged polymer/sapphire interface at acidic electrolyte solutions with pH below the isoelectric point, which contributes to the hydration lubrication of anions. Strongly hydrated anions (for the case of SO42-) exhibit stable superlubricity comparable to cations, with strikingly low boundary friction coefficient of 0.003-0.007 under contact pressures above 15 MPa without a running-in period. The hydration lubrication performance of anions is determined by both the ionic hydration strength and ion adsorption density based on the surface potential and tribological experiments. The results shed light on the role of anions in superlubricity and hydration lubrication, which may be relevant for understanding the lubrication mechanism and improving lubrication performance in acidic environments, for example, in acid pumps, sealing rings of compressors for handling acidic media, and processing devices of nuclear waste.
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Affiliation(s)
- Tianyi Han
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Mingbo Zhao
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Chuan Sun
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Ruiqi Zhao
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Wanxing Xu
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Shumin Zhang
- Beijing Key Laboratory of Long-life Technology of Precise Rotation and Transmission Mechanisms, Beijing Institute of Control Engineering, Beijing 100094, China
| | - Sudesh Singh
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
- Department of Mechanical Engineering, Sharda School of Engineering and Technology, Sharda University, Greater Noida 201310, India
| | - Jianbin Luo
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Chenhui Zhang
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
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4
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Improved mechanical and tribological properties of PAAm/PVA hydrogel-Ti6Al4V alloy configuration for cartilage repair. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03355-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Kumar D, Sahu B, Arif Mohammad S, Banerjee S. Phosphorus-containing smart, multifunctional polymers towards materials with dual stimuli responsivity, self-aggregation ability and tunable wettability. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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6
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Zhang C, Xu C, Liu Z, Liu M, Chu H, Zhang K. Formation of Robust Polydimethylsiloxane Coatings on the Flexspline Material and Mechanism of the Tribological Property Improvement. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10749-10759. [PMID: 36001401 DOI: 10.1021/acs.langmuir.2c00645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Flexspline frictional degradation causes failure of harmonic drives. This study focused on the improvement of the flexspline tribological properties. Flexspline material 40Cr was modified with a robust polydimethylsiloxane (PDMS) coating. Etched and chemically modified films were utilized to enhance the organic PDMS coating-substrate link strength. Comparing modified and unmodified 40Cr, the surface friction coefficient decreased by 82.2%. Moreover, the modified 40Cr exhibited excellent load-bearing properties. The effects of speed and lubricant-coating interaction on the tribological properties were verified. This study provides an essential theoretical basis for improving the tribological performance of harmonic drives via soft coating modification.
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Affiliation(s)
- CaiXia Zhang
- Institute of Advanced Manufacturing and Intelligent Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
- Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing 100022, China
| | - CaiXia Xu
- Institute of Advanced Manufacturing and Intelligent Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - ZhiFeng Liu
- Institute of Advanced Manufacturing and Intelligent Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
- Key Laboratory of CNC Equipment Reliability, Ministry of Education, School of Mechanical and Aerospace Engineering, Jilin University, Jilin 130012, China
| | - MengMeng Liu
- Institute of Advanced Manufacturing and Intelligent Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - HongYan Chu
- Institute of Advanced Manufacturing and Intelligent Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
- Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing 100022, China
| | - KaiCheng Zhang
- Institute of Advanced Manufacturing and Intelligent Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
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7
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Fu XK, Cao HB, An YL, Zhou HD, Shi YP, Hou GL, Ha W. Bioinspired Hydroxyapatite Coating Infiltrated with a Graphene Oxide Hybrid Supramolecular Hydrogel Orchestrates Antibacterial and Self-Lubricating Performance. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31702-31714. [PMID: 35796026 DOI: 10.1021/acsami.2c07869] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hydroxyapatite (HA) bioceramic coating has been extensively applied for the modification of metallic implants to improve their biocompatibility and service life after implantation. Unfortunately, HA coating often suffers from high friction, severe wear, and bacterial invasion, which restrict its application in artificial joints. According to a bioinspired soft/hard combination strategy, a novel HA composite coating that is infiltrated with a vancomycin-loaded graphene oxide (GO) hybrid supramolecular hydrogel is developed via vacuum infiltration and a subsequent host-guest interaction-induced self-assembly process. The holes of textured HA ceramic coating act just like a "magic pocket", offering a stable container to form and store GO hybrid hydrogels and even to recycle wear debris as well. The drug-loaded hybrid hydrogels stored in textured HA coating possess a unique shear force and/or frictional heat triggered gel-sol transition and sustained drug release behavior, acting like the extrusion of synovial fluid during articular cartilage movement, leading to a remarkable self-lubrication, anti-wear performance, and promising antibacterial property against Staphylococcus aureus. The friction coefficient and wear rate of composite coating reduced by nearly five times and three orders of magnitude compared with textured HA coating, respectively, which benefited from the synergistic lubricate effect of cyclodextrin-based pseudopolyrotaxane supramolecular hydrogel and GO lubricants.
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Affiliation(s)
- Xiao-Kang Fu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hao-Bo Cao
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yu-Long An
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P. R. China
| | - Hui-Di Zhou
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P. R. China
| | - Yan-Ping Shi
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P. R. China
| | - Guo-Liang Hou
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P. R. China
| | - Wei Ha
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P. R. China
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8
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Regulation Mechanism for Friction Coefficient of Poly(vinylphosphoric acid) (PVPA) Superlubricity System Based on Ionic Properties. NANOMATERIALS 2022; 12:nano12132308. [PMID: 35808147 PMCID: PMC9268071 DOI: 10.3390/nano12132308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/29/2022] [Accepted: 07/02/2022] [Indexed: 02/05/2023]
Abstract
Adjustable lubrication aims to achieve active control of the relative motion of the friction interface, providing a new idea for intelligent operation. A new phenomenon of sudden changes of friction coefficient (COF) in the poly(vinylphosphoric acid) (PVPA) superlubricity system by mixing different lubricants, was found in this study. It was found that anions were the critical factor for the COF change. The change degrees of the COF were investigated by a universal micro tribometer (UMT). A quartz crystal microbalance (QCM)-D was used to analyze the adsorption quantity of anions on the PVPA surface. The hydratability of the PVPA interface was controlled by changing the anionic properties (the amount of charge and structure), thus regulating the COF. The adsorption difference of anions is an important reasoning of how anionic properties can regulate the hydratability. It was analyzed by molecular dynamics simulation. For anions carrying different numbers of charges or double bonds, the adsorption quantity of anions was mainly affected by the adsorption degree on the PVPA surface, while the adsorption quantity of anions with different molecular configuration was synergistically regulated by the adsorption degree and adsorption area of anions on the PVPA surface. This work can be used to develop smart surfaces for applications.
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9
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Liu M, Zhang C, Chen J, Liu Z, Cheng Y, Wu X. Mechanisms of cation-induced superlubricity transition of poly(vinylphosphonic acid) coatings. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119117] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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10
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Sarkar A, Soltanahmadi S, Chen J, Stokes JR. Oral tribology: Providing insight into oral processing of food colloids. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106635] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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11
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Synergistic Regulation Mechanism of Inorganic Thermal Oxidation Coating and Poly (Vinylphosphonic Acid) (PVPA) Coating for High Load Bearing Superlubricity. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11010416] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A low friction coefficient and high bearing capacity can improve the service life of implants in the human body. In this study, we firstly investigate the mechanical properties of inorganic thermal oxide coatings on titanium alloy (Ti6Al4V). Tribological experiments were performed for different tribo-pairs under uniform conditions. The inorganic thermal oxide coating on Ti6Al4V formed at 300℃ was found to have excellent tribological properties and can effectively improve the bearing capacity of Ti6Al4V. The organic poly (vinylphosphonic acid) (PVPA) on Ti6Al4V has excellent anti-friction properties, which can help achieve superlubricity. An inorganic thermal oxide/organic PVPA composite coating was fabricated on Ti6Al4V to obtain a surface with low friction and high bearing capacity. It is found that the presence of the thermal oxide doubled the bearing capacity of the composite coating compared to that of the PVPA coating alone. This study can serve as a guide for the modification of artificial joints.
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12
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Kousar F, Moratti SC. Synthesis of fluorinated phosphorus-containing copolymers and their immobilization and properties on stainless steel. RSC Adv 2021; 11:38189-38201. [PMID: 35498111 PMCID: PMC9043992 DOI: 10.1039/d1ra05813d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 11/22/2021] [Indexed: 11/23/2022] Open
Abstract
A series of fluorinated-phosphonic acid methacrylates were synthesized by free radical polymerization using heptadecafluorodecyl methacrylate (HDFDMA) and (dimethoxyphosphoryl) methyl methacrylate (DMPMM) monomers for potential application as anti-corrosion coatings. The dimethyl protecting groups were then hydrolyzed, giving phosphonic acid groups that are able to stably bind onto metal oxide surfaces. The copolymers were then immobilized as a monolayer film to the surface of 316L stainless steel by treatment of dilute solutions in trifluoroacetic acid for 30 minutes followed by rinsing. The surfaces were analyzed using various techniques and contact angles as high as 128° were recorded for some copolymer functionalized surfaces. Results also demonstrated that the polymer films proved stable to hydrolysis over several weeks of immersion in water. A series of fluorinated-phosphonic acid methacrylates were synthesized by free radical polymerization using heptadecafluorodecyl methacrylate (HDFDMA) and (dimethoxyphosphoryl) methyl methacrylate (DMPMM) monomers for potential application as anti-corrosion coatings.![]()
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Affiliation(s)
- Farzana Kousar
- Department of Chemistry, The University of Otago, Dunedin, 9010, New Zealand
| | - Stephen C. Moratti
- Department of Chemistry, The University of Otago, Dunedin, 9010, New Zealand
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Chen Y, He L, Chen Z, Zhao L, Liang J, Liu G. Under-oil superhydrophilic TiO2/poly(sodium vinylphosphonate) nanocomposite for the separation of water from oil. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117397] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Wehbi M, Mehdi A, Alaaeddine A, Jaber N, Ameduri B. Solid-Liquid Europium Ion Extraction via Phosphonic Acid-Functionalized Polyvinylidene Fluoride Siloxanes. Polymers (Basel) 2020; 12:polym12091955. [PMID: 32872346 PMCID: PMC7563938 DOI: 10.3390/polym12091955] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/20/2020] [Accepted: 08/25/2020] [Indexed: 12/20/2022] Open
Abstract
Novel triethoxysilane and dimethyl phosphonate functional vinylidene fluoride (VDF)-containing terpolymers, for potential applications in Eu ion extraction from water, were produced by conventional radical terpolymerization of VDF with vinyltriethoxylsilane (VTEOS) and vinyldimethylphosphonate (VDMP). Although initial attempts for the copolymerization of VTEOS and VDMP failed, the successful terpolymerization was initiated by peroxide to lead to multiple poly(VDF-ter-VDMP-ter-VTEOS) terpolymers, that had different molar percentages of VDF (70–90 mol.%), VTEOS (5–20 mol.%) and VDMP (10 mol.%) in 50–80% yields. The obtained terpolymers were characterized by 1H, 19F, 29Si and 31P NMR spectroscopies. The crosslinking of such resulting poly(VDF-ter-VDMP-ter-VTEOS) terpolymers was achieved by hydrolysis and condensation (sol–gel process) of the triethoxysilane groups in acidic media, to obtain a 3D network, which was analyzed by solid state 29Si and 31P NMR spectroscopies, TGA and DSC. The thermal stability of the terpolymers was moderately high (up to 300 °C under air), whereas they display a slight increase in their crystallinity-rate from 9.7% to 12.1% after crosslinking. Finally, the dimethyl phosphonate functions were hydrolyzed into phosphonic acid successfully, and the europium ion extraction capacity of terpolymer was studied. The results demonstrated a very high removal capacity of Eu(III) ions from water, up to a total removal at low concentrations.
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Affiliation(s)
- Mohammad Wehbi
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34095 Montpellier, France;
- Department of Chemistry and Biochemistry, Faculty of Sciences 1, Lebanese University, Rafic Hariri Campus—Hadath, Beirut 6573/14, Lebanon; (A.A.); (N.J.)
- Correspondence: (M.W.); (B.A.)
| | - Ahmad Mehdi
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34095 Montpellier, France;
| | - Ali Alaaeddine
- Department of Chemistry and Biochemistry, Faculty of Sciences 1, Lebanese University, Rafic Hariri Campus—Hadath, Beirut 6573/14, Lebanon; (A.A.); (N.J.)
| | - Nada Jaber
- Department of Chemistry and Biochemistry, Faculty of Sciences 1, Lebanese University, Rafic Hariri Campus—Hadath, Beirut 6573/14, Lebanon; (A.A.); (N.J.)
| | - Bruno Ameduri
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34095 Montpellier, France;
- Correspondence: (M.W.); (B.A.)
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15
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Preparation and characterization of phosphate-nickel-titanium composite coatings obtained by sol–gel process for corrosion protection. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2173-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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16
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Wehbi M, Mehdi A, Negrell C, David G, Alaaeddine A, Améduri B. Phosphorus-Containing Fluoropolymers: State of the Art and Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:38-59. [PMID: 31801016 DOI: 10.1021/acsami.9b16228] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Several strategies to synthesize fluorinated (co)polymers containing phosphorus groups and their applications are reviewed. First, original fluoromonomers bearing phosphorus atoms are supplied from relevant routes. They may possess fluorinated atoms linked to the ethylenic carbon atoms with different structures, such as F2C═CF- or H2C═C(CF3)- and a phosphonated ω-function adjacent to an aliphatic or aromatic linker, while other monomers display a difluoromethylene dialkylphosphonate end group such as -CF2-P(O)(OR)2. Then, fluorinated copolymers were obtained according to various pathways: (i) by radical homopolymerization of monomers containing both fluorine and phosphorus atoms, (ii) by direct radical copolymerization of fluoromonomers and phosphorus-based monomers, or (iii) by chemical modification of fluorinated copolymers with phosphorus-based reactants. Conventional radical and controlled (or reversible deactivation radical polymerization, RDRP) copolymerization have also been explored. As for the chemical change of halogenated polymers, either conventional organic reactions (e.g., Arbuzov reaction from a chlorine, iodine, or bromine atom) or radiation grafting with specific monomers led to graft copolymers composed of a fluorinated backbone and phosphonated grafts. This second part also details aliphatic and aromatic fluorophosphorous copolymers in which dialkylphosphonates or phosphonic acids are reported. Finally, since fluorine and phosphorus atoms bring complementary relevant properties (low refractive index and dielectric constants, chemical inertness, high electrochemical, soils, and heat resistances, electroattractivity from fluorine atoms and high acidity, complexation, anticorrosion, flame retardant, and biomedical properties from phosphorus ones), synergetic characteristics have been targeted. These properties allow such fluoro-phosphorus (co)polymers to be used as novel materials involved in various applications such as polymer exchange membranes for fuel cells, self-etching adhesives for dental materials, adhesion promoters, flame retardants, polymer blends, and anticorrosive coatings.
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Affiliation(s)
- Mohammad Wehbi
- Ingénierie et Architectures Macromoléculaires Team, ICGM , Université de Montpellier, CNRS, ENSCM , F-34296 Montpellier , France
- Chimie Moléculaire et Organisation du Solide Team, ICGM , Université de Montpellier, CNRS, ENSCM , F-34296 Montpellier , France
- Laboratory of Medicinal Chemistry and Natural Products, Faculty of Sciences (1) and PRASE-EDST , Lebanese University , Hadath , Lebanon
| | - Ahmad Mehdi
- Chimie Moléculaire et Organisation du Solide Team, ICGM , Université de Montpellier, CNRS, ENSCM , F-34296 Montpellier , France
| | - Claire Negrell
- Ingénierie et Architectures Macromoléculaires Team, ICGM , Université de Montpellier, CNRS, ENSCM , F-34296 Montpellier , France
| | - Ghislain David
- Ingénierie et Architectures Macromoléculaires Team, ICGM , Université de Montpellier, CNRS, ENSCM , F-34296 Montpellier , France
| | - Ali Alaaeddine
- Laboratory of Medicinal Chemistry and Natural Products, Faculty of Sciences (1) and PRASE-EDST , Lebanese University , Hadath , Lebanon
| | - Bruno Améduri
- Ingénierie et Architectures Macromoléculaires Team, ICGM , Université de Montpellier, CNRS, ENSCM , F-34296 Montpellier , France
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17
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Deng Y, Sun J, Ni X, Xiong D. Multilayers of poly(ethyleneimine)/poly(acrylic acid) coatings on Ti6Al4V acting as lubricated polymer-bearing interface. J Biomed Mater Res B Appl Biomater 2020; 108:2141-2152. [PMID: 31904181 DOI: 10.1002/jbm.b.34553] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 12/09/2019] [Accepted: 12/20/2019] [Indexed: 11/11/2022]
Abstract
To achieve an efficient lubricated interface on titanium alloy (Ti6Al4V) alloy, polyelectrolyte multilayer (PEM) polymer coatings, based on poly(ethyleneimine)/poly(acrylic acid) (PEI/PAA), were fabricated on the surface of Ti6Al4V alloy substrates using the layer-by-layer (LbL) assembly technique. Their composition and morphology were confirmed by Fourier-transform infrared/attenuated total reflectance (FTIR/ATR) spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. The tribological properties were investigated by a ball-on-disk rotating tribometer using deionized water, saline, and calf serum. The results exhibit that (PEI/PAA)*n coatings have the internal cross-linked network and porous structure on the surface. The surface of PEI/PAA coatings-modified Ti6Al4V shows the sufficient wettability. The polymer-bearing interface of (PEI/PAA)*10 exhibits a low friction coefficient, 0.059, for 2 hr, and represents an 88% decline compared with bare Ti6Al4V. Moreover, the wear track on the polymer-bearing interface is superlow. There is no obvious wear volume, which indicates effective wear resistance. The hydrated layer, the cross-linked network structure, and the porous structure of PEM coatings are the main factors for efficient tribological properties. The multilayer PEI/PAA coating shows the potential uses of developing the lubricated-bearing interface on Ti6Al4V alloy.
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Affiliation(s)
- Yaling Deng
- College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing, China
| | - Jianjun Sun
- College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing, China
| | - Xingya Ni
- College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing, China
| | - Dangsheng Xiong
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, China
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18
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Xie Y, He E, Cao Z, Ou Q, Wang Y. Effect of polyvinylphosphonic acid on resin-dentin bonds and the cytotoxicity of mouse dental papilla cell-23. J Prosthet Dent 2019; 122:492.e1-492.e6. [PMID: 31623837 DOI: 10.1016/j.prosdent.2019.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 08/08/2019] [Accepted: 08/08/2019] [Indexed: 11/29/2022]
Abstract
STATEMENT OF PROBLEM Polyvinylphosphonic acid (PVPA) could be used as a biomimetic remineralization analog and a matrix metalloproteinases (MMPs) inhibitor. However, studies are lacking regarding the performance of PVPA in dental bonding systems for maintaining the durability of the resin-dentin bond. PURPOSE The purpose of this in vitro study was to investigate the effect of PVPA on the durability of resin-dentin bonds and the viability of mouse dental papilla cell-23 (MDPC-23). The mechanical properties of resin-dentin interfaces during long-term storage were analyzed, and the potential application of PVPA as a biomimetic remineralization analog in adhesive dentistry was evaluated. MATERIAL AND METHODS Seventy-five extracted noncarious human third molars were collected and randomly divided into 5 groups, and then the microtensile bond strength (μTBS) data and scanning electron microscope (SEM) images were used to evaluate the preservation condition of resin-dentin bonds after 1 day, 6 months, and 1 year of storage. The cytotoxicity of PVPA was detected by cell proliferation assay and cell apoptosis assay. RESULTS Compared with the control and chlorhexidine (CHX) groups, the combined group (treated with both 200-μg/mL PVPA and biomimetic remineralization) had excellent bond durability. The exposed collagen fibril from the PVPA-treated groups (included 200-μg/mL and 500-μg/mL PVPA groups and a combined group) still showed integrity after 1 year of storage when compared with the control group. PVPA up to 500 μg/mL showed no cytotoxicity to MDPC-23 and did not inhibit cell growth. CONCLUSIONS This study offered evidence that PVPA did not result in cytotoxicity at low concentrations as an MMP inhibitor and a biomimetic remineralization analog. In addition, the application of PVPA improved bond strength and preserved collagen integrity after 1 year of in vitro storage.
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Affiliation(s)
- Yunyi Xie
- Graduate student, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Enbao He
- Resident Physician, Department of Stomatology, Guangzhou First People's Hospital, Guangzhou, PR China
| | - Zeyuan Cao
- Graduate student, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Qianmin Ou
- Graduate student, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Yan Wang
- Professor, Oral Biology and Medicine, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China.
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19
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Wang H, Liu Y, Liu W, Liu Y, Wang K, Li J, Ma T, Eryilmaz OL, Shi Y, Erdemir A, Luo J. Superlubricity of Polyalkylene Glycol Aqueous Solutions Enabled by Ultrathin Layered Double Hydroxide Nanosheets. ACS APPLIED MATERIALS & INTERFACES 2019; 11:20249-20256. [PMID: 31083968 DOI: 10.1021/acsami.9b03014] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
It was previously proved that the existence of a large amount of hydrogen ions in water-based lubricants can easily lead to a superlubric state; however, it was also shown that these hydrogen ions could cause severe corrosion. As part of a large family of attractive clays, layered double hydroxides (LDHs) possess excellent tribological properties in water-based lubrication systems. In the present work, two different kinds of LDHs are dispersed in polyalkylene glycol (PAG) aqueous solutions, in two distinct forms: ultrathin nanosheets (ULDH-NS) of ca. 60 nm wide and ca. 1 nm thick (single or double layer) and nanoparticles (LDH-NP) of ca. 19.73 nm wide and ca. 8.68 nm thick. We find that the addition of ULDH-NS greatly shortens (as much as 85%) the running-in period prior to reaching the superlubricity regime and increases the ultimate load-bearing capacity by about four times. As compared to the fluid film thickness of the lubricating PAG solution, their ultrathin longitudinal dimension will not impair or influence the fluid film coverage in the contact zone. The analysis of sliding solid surfaces and the atomic force microscope microscale friction test demonstrate that the adsorption of ULDH-NS enables the sliding solid surfaces to be polished and protected because of their relatively weak interlayer interaction and increased adhesion effect. Owing to their superior tribological properties as lubricant additives, ultrathin LDH nanosheets hold great potential for enabling liquid superlubricity in industrial applications in the future.
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Affiliation(s)
- Hongdong Wang
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
- Applied Materials Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
- Division of Machine Elements , Luleå University of Technology , Luleå 97187 , Sweden
| | - Yuhong Liu
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Wenrui Liu
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Yanmin Liu
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Kunpeng Wang
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Jinjin Li
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Tianbao Ma
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Osman Levent Eryilmaz
- Applied Materials Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Yijun Shi
- Division of Machine Elements , Luleå University of Technology , Luleå 97187 , Sweden
| | - Ali Erdemir
- Applied Materials Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Jianbin Luo
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
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20
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Duan Y, Liu Y, Li J, Feng S, Wen S. AFM Study on Superlubricity between Ti6Al4V/Polymer Surfaces Achieved with Liposomes. Biomacromolecules 2019; 20:1522-1529. [PMID: 30835459 DOI: 10.1021/acs.biomac.8b01683] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Liposomes have been considered as the boundary lubricant in natural joints. They are also the main component of bionic lubricant. In this study, the tribological properties of liposomes on Ti6Al4V/polymer surface were studied by atomic force microscope (AFM) at the nanoscale. The superlubricity with a friction coefficient of 0.007 was achieved under the maximal pressure of 15 MPa, consisting with the lubrication condition of natural joints. Especially, when the AFM probe was hydrophilically modified and preadsorbed, the friction coefficient and load bearing capacity could be further improved. In addition, the probe with a large radius could maintain the stable lubrication of liposomes in the contact zone. Finally, an optimal lubrication model of liposomes was established and the critical force for superlubricity was also proposed. It was the boundary between elastic deformation and plastic deformation for vesicles. It was also the indicator of the plough effect appearing on the adsorbed layer. This work reveals the interfacial behavior of liposomes and realizes the controllable superlubricity system, providing more guidance for clinical application.
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Affiliation(s)
- Yiqin Duan
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Yuhong Liu
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Jinjin Li
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Shaofei Feng
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Shizhu Wen
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
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21
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Shi H, Lu X, Liu Y, Song J, Deng K, Zeng Q, Wang C. Nanotribological Study of Supramolecular Template Networks Induced by Hydrogen Bonds and van der Waals Forces. ACS NANO 2018; 12:8781-8790. [PMID: 30059613 DOI: 10.1021/acsnano.8b05045] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanotribology has been given increasing attention by researchers in pursuing the nature of friction. In the present work, an approach that combines the supramolecular assembly and nanotribology is introduced. Herein, the nanotribological study was carried out on seven supramolecular template networks [namely, hydrogen bond induced tricarboxylic acids and van der Waals force induced hexaphenylbenzene (HPB) derivatives]. The template networks, as well as the host-guest assemblies of template molecules induced by different forces, were constructed on the highly oriented pyrolytic graphite (HOPG) surface and explicitly characterized using scanning tunneling microscopy (STM). Meanwhile, the nanotribological properties of the template networks were measured using atomic force microscopy (AFM). Together with the theoretical calculation using the density functional theory (DFT) method, it was revealed that the friction coefficients were positively correlated with the interaction strength. The frictional energy dissipation mainly derives from both the intermolecular interaction energy and the interaction energy between molecules and the substrate. The efforts not only help us gain insight into the competitive mechanisms of hydrogen bond and van der Waals force in supramolecular assembly but also shed light on the origin of friction and the relationship between the assembly structures and the nanotribological properties at the molecular level.
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Affiliation(s)
- Hongyu Shi
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology (NCNST) , Beijing 100190 , China
| | - Xinchun Lu
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Yuhong Liu
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Jian Song
- State Key Laboratory of Tribology , Tsinghua University , Beijing 100084 , China
| | - Ke Deng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology (NCNST) , Beijing 100190 , China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology (NCNST) , Beijing 100190 , China
| | - Chen Wang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology (NCNST) , Beijing 100190 , China
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Kumar A, Pisula W, Müllen K. Molecular self-assembly and morphology induction in high-performance aromatic phosphonated block copolymers. J Appl Polym Sci 2018. [DOI: 10.1002/app.46750] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Avneesh Kumar
- Institute of Organic Chemistry; Technical University of Darmstadt, Alarich-Weiss-Street 4; Darmstadt 64287 Germany
| | - Wojciech Pisula
- Department of Molecular Physics, Faculty of Chemistry; Lodz University of Technology, Zeromskiego 116; 90-924 Lodz Poland
- Max Planck Institute for Polymer Research, Ackermannweg 10; Mainz 55128 Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10; Mainz 55128 Germany
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23
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Duan Y, Liu Y, Li J, Wang H, Wen S. Investigation on the Nanomechanics of Liposome Adsorption on Titanium Alloys: Temperature and Loading Effects. Polymers (Basel) 2018; 10:polym10040383. [PMID: 30966418 PMCID: PMC6415199 DOI: 10.3390/polym10040383] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 03/27/2018] [Accepted: 03/29/2018] [Indexed: 01/08/2023] Open
Abstract
The mechanical properties of liposomes, determined by the lipid phase state at ambient temperature, have a close relationship with their physiological activities. Here, atomic force microscopy (AFM) was used to produce images and perform force measurements on titanium alloys at two adsorbed temperatures. The mechanical properties were evaluated under repeated loading and unloading, suggesting a better reversibility and resistance of gel phase liposomes. The liquid phase liposomes were irreversibly damaged during the first approach while the gel phase liposomes could bear more iterations, resulting from water flow reversibly going across the membranes. The statistical data offered strong evidence that the lipid membranes in the gel phase are robust enough to resist the tip penetration, mainly due to their orderly organization and strong hydrophobic interactions between lipid molecules. This work regarding the mechanical properties of liposomes with different phases provides guidance for future clinical applications, such as artificial joints.
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Affiliation(s)
- Yiqin Duan
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - Yuhong Liu
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - Jinjin Li
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - Hongdong Wang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - Shizhu Wen
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
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Song J, Liao Z, Shi H, Xiang D, Xu L, Liu Y, Mu X, Liu W. Blood Compatibility of ZrO₂ Particle Reinforced PEEK Coatings on Ti6Al4V Substrates. Polymers (Basel) 2017; 9:polym9110589. [PMID: 30965896 PMCID: PMC6418944 DOI: 10.3390/polym9110589] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 10/30/2017] [Accepted: 11/06/2017] [Indexed: 12/24/2022] Open
Abstract
Titanium (Ti) and its alloys are widely used in biomedical devices. As biomaterials, the blood compatibility of Ti and its alloys is important and needs to be further improved to provide better functionality. In this work, we studied the suitability of zirconia (ZrO2) particle reinforced poly-ether-ether-ketone (PEEK) coatings on Ti6Al4V substrates for blood-contacting implants. The wettability, surface roughness and elastic modulus of the coatings were examined. Blood compatibility tests were conducted by erythrocytes observation, hemolysis assay and clotting time of recalcified human plasma, to find out correlations between the microstructure of the ZrO2-filled PEEK composite coatings and their blood compatibilities. The results suggested that adding ZrO2 nanoparticles increased the surface roughness and improved the wettability and Derjaguin-Muller-Toporov (DMT) elastic modulus of PEEK coating. The PEEK composite matrix coated Ti6Al4V specimens did not cause any aggregation of erythrocytes, showing morphological normal shapes. The hemolysis rate (HR) values of the tested specimens were much less than 5% according to ISO 10993-4 standard. The values of plasma recalcification time (PRT) of the tested specimens varied with the increasing amount of ZrO2 nanoparticles. Based on the results obtained, 10 wt % ZrO2 particle reinforced PEEK coating has demonstrated an optimum blood compatibility, and can be considered as a candidate to improve the performance of existing PEEK based coatings on titanium substrates.
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Affiliation(s)
- Jian Song
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - Zhenhua Liao
- Biomechanics and Biotechnology Lab, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China.
| | - Hongyu Shi
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - Dingding Xiang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - Lin Xu
- Department of Osteology, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China.
| | - Yuhong Liu
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - Xiaohong Mu
- Department of Osteology, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China.
| | - Weiqiang Liu
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
- Biomechanics and Biotechnology Lab, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China.
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25
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Huang X, Wu J, Zhu Y, Zhang Y, Feng X, Lu X. Flow-resistance analysis of nano-confined fluids inspired from liquid nano-lubrication: A review. Chin J Chem Eng 2017. [DOI: 10.1016/j.cjche.2017.05.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Wan M, Zhang J, Wang Q, Zhan S, Chen X, Mao C, Liu Y, Shen J. In Situ Growth of Mesoporous Silica with Drugs on Titanium Surface and Its Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2017; 9:18609-18618. [PMID: 28513138 DOI: 10.1021/acsami.7b05163] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Mesoporous silica has been developed for the modification of titanium surfaces that are used as implant materials. Yet, the traditional modification methods failed to effectively construct mesoporous silica on the titanium surface evenly and firmly, in which the interaction between mesoporous silica and titanium was mainly physical. Here, in situ growth of mesoporous silica on a titanium surface was performed using a simple evaporation-induced self-assembly strategy. Meantime, in situ introduction of drugs (heparin and vancomycin) to mesoporous silica was also adopted to improve the drug-loading amount. Both the above-mentioned processes were completed at the same time. Transmission electron microscopy, N2 adsorption-desorption isotherms, Fourier transform infrared spectroscopy, scanning electron microscopy, and water contact angle measurements were used to characterize the structure of the mesoporous silica film. Results indicated that the mesoporous silica film that in situ grew on the titanium surface was smooth, thin, transparent, and stable. Cytotoxicity, proliferation performance of osteoblast cells, and in vitro and in vivo studies of the antibacterial activity of the coating were tested. This is the first study to modify the titanium surface by the in situ growth of a mesoporous silica coating with two kinds of drugs. The stability of the mesoporous silica coating can be attributed to the chemical bonding between dopamine and silicon hydroxyl of the mesoporous silica coating, and the smooth surface of mesoporous silica is a result of the method of in situ growth. The large amount of drug-loading also could be ascribed to the in situ introduction of drugs during the synthetic process. The strategy proposed in this work will bring more possibilities for the preparation of advanced functional materials based on the combination of mesoporous structure and metallic materials.
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Affiliation(s)
- Mimi Wan
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210046, China
| | - Jin Zhang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210046, China
| | - Qi Wang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210046, China
| | - Shuyue Zhan
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210046, China
| | - Xudong Chen
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210046, China
| | - Chun Mao
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210046, China
| | - Yuhong Liu
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210046, China
| | - Jian Shen
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210046, China
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Zhang C, Liu Y, Liu Z, Zhang H, Cheng Q, Yang C. Regulation Mechanism of Salt Ions for Superlubricity of Hydrophilic Polymer Cross-Linked Networks on Ti 6Al 4V. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:2133-2140. [PMID: 28183180 DOI: 10.1021/acs.langmuir.6b04429] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Poly(vinylphosphonic acid) (PVPA) cross-linked networks on Ti6Al4V show superlubricity behavior when sliding against polytetrafluoroethylene in water-based lubricants. The superlubricity can occur but only with the existence of salt ions in the polymer cross-linked networks. This is different from the phenomenon in most polymer brushes. An investigation into the mechanism revealed that cations and anions in the lubricants worked together to yield the superlubricity even under harsh conditions. It is proposed that the preferential interactions of cations with PVPA molecules rather than water molecules are the main reason for the superlubricity in water-based lubricants. The interaction of anions with water molecules regulates the properties of the tribological interfaces, which influences the magnitude of the friction coefficient. Owing to the novel cross-linked networks and the interactions between cations and polymer molecules, their superlubricity can be maintained even at a high salt ion concentration of 5 M. These excellent properties make PVPA-modified Ti6Al4V a potential candidate for application in artificial implants.
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Affiliation(s)
- Caixia Zhang
- Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology , Beijing 100124, China
| | - Yuhong Liu
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, PR China
| | - Zhifeng Liu
- Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology , Beijing 100124, China
| | - Hongyu Zhang
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, PR China
| | - Qiang Cheng
- Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology , Beijing 100124, China
| | - Congbin Yang
- Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology , Beijing 100124, China
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Banerjee S, Wehbi M, Manseri A, Mehdi A, Alaaeddine A, Hachem A, Ameduri B. Poly(vinylidene fluoride) Containing Phosphonic Acid as Anticorrosion Coating for Steel. ACS APPLIED MATERIALS & INTERFACES 2017; 9:6433-6443. [PMID: 28121419 DOI: 10.1021/acsami.6b15408] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Vinylidene fluoride (VDF)-based copolymers bearing pendant phosphonic acid function for potential application as anticorrosion coatings were synthesized via free radical copolymerization of VDF with a new phosphorus containing 2-trifluoromethacrylate monomer, (dimethoxyphosphoryl)methyl 2-(trifluoromethyl)acrylate (MAF-DMP). MAF-DMP was prepared from 2-trifluoromethacrylic acid in 60% overall yield. Radical copolymerizations of VDF with MAF-DMP initiated by tert-amyl peroxy-2-ethylhexanoate at varying ([VDF]0/[MAF-DMP]0) feed ratios led to several poly(VDF-co-MAF-DMP) copolymers having different molar percentages of VDF (79-96%) and number-average molecular weights (Mn's) up to ca. 10 000 g mol-1 in fair yields (47-53%). Determination of the composition and microstructure of all the synthesized copolymers was done by 1H and 19F NMR spectroscopies. The monomer reactivity ratios of this new VDF/MAF-DMP pair were also determined (rVDF = 0.76 ± 0.34 and rMAF-DMP = 0 at 74 °C). The resulting poly(VDF-co-MAF-DMP) copolymers exhibited high melting temperature (162-171 °C, with respect to the VDF content), and the degree of crystallinity reached up to 51%. Finally, the pendant dimethyl phosphonate ester groups of the synthesized poly(VDF-co-MAF-DMP) copolymer were quantitatively hydrolyzed, giving rise to novel phosphonic acid-functionalized PVDF (PVDF-PA). In comparison to hydrophobic poly(VDF-co-MAF-DMP) copolymers (the water contact angle, WCA, was 98°), the hydrophilic character of the PVDF-PA was found to be surprisingly rather pronounced, exhibiting low WCA (15°). Finally, steel plates coated with PVDF-PA displayed satisfactory anticorrosion properties under simulated seawater environment.
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Affiliation(s)
- Sanjib Banerjee
- Ingénierie et Architectures Macromoléculaires Team, Institut Charles Gerhardt, UMR 5253 CNRS, UM, ENSCM , Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
| | - Mohammad Wehbi
- Ingénierie et Architectures Macromoléculaires Team, Institut Charles Gerhardt, UMR 5253 CNRS, UM, ENSCM , Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
- Chimie Moleculaire et Organisation du Solide Team, Institut Charles Gerhardt, UMR 5253 CNRS, UM, ENSCM , Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
- Department of Chemistry and Biochemistry, Faculty of Sciences 1, Lebanese University, Rafic Hariri University , Campus - Hadas, Beirut, Lebanon
| | - Abdellatif Manseri
- Ingénierie et Architectures Macromoléculaires Team, Institut Charles Gerhardt, UMR 5253 CNRS, UM, ENSCM , Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
| | - Ahmad Mehdi
- Chimie Moleculaire et Organisation du Solide Team, Institut Charles Gerhardt, UMR 5253 CNRS, UM, ENSCM , Place Eugène Bataillon, 34095 Montpellier Cedex 05, France
| | - Ali Alaaeddine
- Department of Chemistry and Biochemistry, Faculty of Sciences 1, Lebanese University, Rafic Hariri University , Campus - Hadas, Beirut, Lebanon
| | - Ali Hachem
- Department of Chemistry and Biochemistry, Faculty of Sciences 1, Lebanese University, Rafic Hariri University , Campus - Hadas, Beirut, Lebanon
| | - Bruno Ameduri
- Ingénierie et Architectures Macromoléculaires Team, Institut Charles Gerhardt, UMR 5253 CNRS, UM, ENSCM , Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
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Abueva CDG, Jang DW, Padalhin A, Lee BT. Phosphonate-chitosan functionalization of a multi-channel hydroxyapatite scaffold for interfacial implant-bone tissue integration. J Mater Chem B 2017; 5:1293-1301. [DOI: 10.1039/c6tb03228a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphonate-chitosan functionalization of a multi-channel hydroxyapatite scaffold as a new approach to improve interfacial implant-bone tissue integration.
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Affiliation(s)
- Celine D. G. Abueva
- Department of Regenerative Medicine
- College of Medicine
- Soonchunhyang University
- Cheonan-si
- Republic of Korea
| | - Dong-Woo Jang
- Department of Regenerative Medicine
- College of Medicine
- Soonchunhyang University
- Cheonan-si
- Republic of Korea
| | - Andrew Padalhin
- Department of Regenerative Medicine
- College of Medicine
- Soonchunhyang University
- Cheonan-si
- Republic of Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine
- College of Medicine
- Soonchunhyang University
- Cheonan-si
- Republic of Korea
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30
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Song J, Liu Y, Liao Z, Wang S, Tyagi R, Liu W. Wear studies on ZrO 2 -filled PEEK as coating bearing materials for artificial cervical discs of Ti6Al4V. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:985-94. [DOI: 10.1016/j.msec.2016.08.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 07/15/2016] [Accepted: 08/02/2016] [Indexed: 10/21/2022]
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31
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Duan Y, Liu Y, Zhang C, Chen Z, Wen S. Insight into the Tribological Behavior of Liposomes in Artificial Joints. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10957-10966. [PMID: 27687876 DOI: 10.1021/acs.langmuir.6b02822] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Liposomes are widely used in drug delivery and gene therapy, and their new role as boundary lubricant in natural/artificial joints has been found in recent years. In this study, the tribological properties of liposomes on titanium alloy (Ti6Al4 V)/UHMWPE interface were studied by a ball-on-disc tribometer. The efficient reduction of friction coefficient and wear on both surfaces under various velocities and loads is found. A multilayer structure of physically adsorbed liposomes on Ti6Al4 V surface was also observed by atomic force microscope (AFM). Except for the hydration mechanism by phosphatidylcholine (PC) groups, the well-performed tribological properties by liposomes is also attributed to the existence of adsorbed liposome layers on both surfaces, which could reduce asperities contact and show great bearing capacity. This work enriches the research on liposomes for lubrication improvement on artificial surface and shows their value in clinical application.
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Affiliation(s)
- Yiqin Duan
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Yuhong Liu
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Caixia Zhang
- Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology , Beijing 100124, China
| | - Zhe Chen
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Shizhu Wen
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
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32
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Li J, Zhang C, Cheng P, Chen X, Wang W, Luo J. AFM Studies on Liquid Superlubricity between Silica Surfaces Achieved with Surfactant Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5593-9. [PMID: 27192019 DOI: 10.1021/acs.langmuir.6b01237] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
By using atomic force microscopy (AFM), we showed that the liquid superlubricity with a superlow friction coefficient of 0.0007 can be achieved between two silica surfaces lubricated by hexadecyltrimethylammonium bromide (C16TAB) solution. There exists a critical load that the lubrication state translates from superlow friction to high friction reversibly. To analyze the superlow friction mechanism and the factors influencing the critical load, we used AFM to measure the structure of adsorbed C16TAB molecules and the normal force between two silica surfaces. Experimental results indicate that the C16TAB molecules are firmly adsorbed on the two silica surfaces by electrostatic interaction, forming cylinder-like micelles. Meanwhile, the positively charged headgroups exposed to solution produce the hydration and double layer repulsion to bear the applied load. By controlling the concentration of C16TAB solution, it is confirmed that the critical load of superlow friction is determined by the maximal normal force produced by the hydration layer. Finally, the superlow friction mechanism was proposed that the adsorbed micellar layer forms the hydration layer, making the two friction surfaces be in the repulsive region and meanwhile providing excellent fluidity without adhesion between micelles.
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Affiliation(s)
- Jinjin Li
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Chenhui Zhang
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Peng Cheng
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Xinchun Chen
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Weiqi Wang
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Jianbin Luo
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
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Zhang J, Meng Y, Tian Y, Zhang X. Effect of concentration and addition of ions on the adsorption of sodium dodecyl sulfate on stainless steel surface in aqueous solutions. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.06.057] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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