1
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Moradi M, Rezaei M. Corrosion protection mechanisms of graphene oxide-reinforced polypropylene coating for mild carbon steel by advanced molecular dynamics simulations with emphasis on resistance to water and chloride ion penetration. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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2
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Salahshoori I, Namayandeh Jorabchi M, Valizadeh K, Yazdanbakhsh A, Bateni A, Wohlrab S. A deep insight of solubility behavior, mechanical quantum, thermodynamic, and mechanical properties of Pebax-1657 polymer blends with various types of vinyl polymers: A mechanical quantum and molecular dynamics simulation study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119793] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3
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Salahshoori I, Babapoor A, Seyfaee A. Elevated performance of the neat, hybrid and composite membranes by the addition of nanoparticles (ZIF-67): A molecular dynamics study. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03673-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4
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Cai F, You G, Zhao X, Hu H, Wu S. The Relationship between Specific Structure and Gas Permeability of Bromobutyl Rubber: A Combination of Experiments and Molecular Simulations. MACROMOL THEOR SIMUL 2019. [DOI: 10.1002/mats.201900025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fei Cai
- State Key Laboratory of Organic‐Inorganic CompositesBeijing University of Chemical Technology Beijing 100029 P. R. China
| | - Guohua You
- College of Information Science and TechnologyBeijing University of Chemical Technology Beijing 100029 China
| | - Xiuying Zhao
- State Key Laboratory of Organic‐Inorganic CompositesBeijing University of Chemical Technology Beijing 100029 P. R. China
| | - Haihua Hu
- Petrochemical Research Institute PetroChina, Gan Su Lanzhou 730060 P. R. China
| | - Sizhu Wu
- State Key Laboratory of Organic‐Inorganic CompositesBeijing University of Chemical Technology Beijing 100029 P. R. China
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5
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6
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Sethi SK, Soni L, Manik G. Component compatibility study of poly(dimethyl siloxane) with poly(vinyl acetate) of varying hydrolysis content: An atomistic and mesoscale simulation approach. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.09.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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7
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Sahu P, Ali SM, Shenoy KT, Mohan S. Structure, Dynamics, and Adsorption of Charged Guest within the Nanocavity of Polymer-Functionalized Neutral Macrocyclic Host. ACS APPLIED MATERIALS & INTERFACES 2018; 10:20968-20982. [PMID: 29847905 DOI: 10.1021/acsami.8b03874] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Host-guest encapsulation has been widely applied for purification and seizing of the metal ions. Macrocyclic crown ethers are one of the most popular hosts in the field of host-guest chemistry, which on functionalization with polymers are employed as an effective adsorbent. In spite of their vast applications, the microscopic information about their sensing mechanism toward cations/molecules is very scarce. Therefore, the present study is focused on the molecular insights of ion-exchange mechanism within the cavity of crown ether-functionalized polymers using molecular dynamics (MD) simulations. This present study investigates the molecular-level events of chloromethylated polystyrene (CMPS) bearing dibenzo-18-crown-6 (DB18C6) in the aqueous and acidic environment, which has been found to be particularly successful in sensing of various alkali and alkali earth metal ions. A strategy has been envisaged to design a crown ether-based functionalized polymeric resin, which exhibits good match of properties with the in-house-synthesized resin. The MD studies well capture the experimentally observed Langmuir-type adsorption isotherms of Li+ ions on crown ether-grafted polymer resins. The presence of acid reduces the adsorption of Li+ ions due to the competition with H3O+ ions. In addition, the results revealed that the "adsorption in crown cavity" follows a dual residence time function. To the best of our knowledge, this is the first report on the adsorption isotherm of functionalized crown ether using MD simulations. The structure and dynamics of binding sites were explored using radial distribution functions and diffusion coefficients. All of these effects have been studied for different Li+-ion concentrations, acid concentrations, and counterions as well as different lengths of polymer chains and degrees of polymerization. Overall, the present study provides insights into and quantitative information about adsorption on the CMPS-DB18C6 resin, which might be useful in myriads of host-guest-based adsorption experiments.
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Affiliation(s)
- Pooja Sahu
- Bhabha Atomic Research Center , Mumbai 400085 , Maharashtra , India
- Homi Bhabha National Institute , Mumbai 400094 , Maharashtra , India
| | - Sk Musharaf Ali
- Bhabha Atomic Research Center , Mumbai 400085 , Maharashtra , India
- Homi Bhabha National Institute , Mumbai 400094 , Maharashtra , India
| | | | - Sadhana Mohan
- Bhabha Atomic Research Center , Mumbai 400085 , Maharashtra , India
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8
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9
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Guan X, Zhang D, Zhang J, Wang J, Jin Y, Zhang J. Electrochemical and Molecular Dynamics Evaluation on Inhibition Performance of 2-(1-Methyl-Nonyl)-Quinoline. J DISPER SCI TECHNOL 2016. [DOI: 10.1080/01932691.2015.1083868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Mortazavian H, Fennell CJ, Blum FD. Surface Bonding Is Stronger for Poly(methyl methacrylate) than for Poly(vinyl acetate). Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00521] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Hamid Mortazavian
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Christopher J. Fennell
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Frank D. Blum
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
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11
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Zhao W, Li M, Fang T, Yu Y, Su Y, Deng W. The molecular simulation of the miscibility, mechanical properties and physical cross-linking behavior of the poly(vinyl alcohol)/poly(acrylic acid) composited membranes. MOLECULAR SIMULATION 2015. [DOI: 10.1080/08927022.2015.1117612] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Wei Zhao
- School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing, P.R. China
| | - Miyi Li
- School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing, P.R. China
| | - Tao Fang
- Beijing Institute of Aerospace Testing Technology, Beijing, P.R. China
| | - Yajuan Yu
- School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing, P.R. China
| | - Yuefeng Su
- School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing, P.R. China
| | - Wensheng Deng
- School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing, P.R. China
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12
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He G, Zhang M, Zhou Q, Pan G. Molecular dynamics simulations of structural transformation of perfluorooctane sulfonate (PFOS) at water/rutile interfaces. CHEMOSPHERE 2015; 134:272-278. [PMID: 25966457 DOI: 10.1016/j.chemosphere.2015.04.056] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/29/2015] [Accepted: 04/16/2015] [Indexed: 06/04/2023]
Abstract
Concentration and salinity conditions are the dominant environmental factors affecting the behavior of perfluorinated compounds (PFCs) on the surfaces of a variety of solid matrices (suspended particles, sediments, and natural minerals). However, the mechanism has not yet been examined at molecular scales. Here, the structural transformation of perfluorooctane sulfonate (PFOS) at water/rutile interfaces induced by changes of the concentration level of PFOS and salt condition was investigated using molecular dynamics (MD) simulations. At low and intermediate concentrations all PFOS molecules directly interacted with the rutile (110) surface mainly by the sulfonate headgroups through electrostatic attraction, yielding a typical monolayer structure. As the concentration of PFOS increased, the molecules aggregated in a complex multi-layered structure, where an irregular assembling configuration was adsorbed on the monolayer structure by the van der Waals interactions between the perfluoroalkyl chains. When adding CaCl2 to the system, the multi-layered structure changed to a monolayer again, indicating that the addition of CaCl2 enhanced the critical concentration value to yield PFOS multilayer assemblies. The divalent Ca(2+) substituted for monovalent K(+) as the bridging counterion in PFOS adsorption. MD simulation may trigger wide applications in study of perfluorinated compounds (PFCs) from atomic/molecular scale.
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Affiliation(s)
- Guangzhi He
- Department of Environmental Nano-materials, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Meiyi Zhang
- Department of Environmental Nano-materials, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Qin Zhou
- Department of Environmental Nano-materials, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Gang Pan
- Department of Environmental Nano-materials, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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13
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Chen A, Blakey I, Jack KS, Whittaker AK, Peng H. Control through monomer placement of surface properties and morphology of fluoromethacrylate copolymers. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27731] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ao Chen
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
| | - Idriss Blakey
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
- Centre for Advanced Imaging; The University of Queensland; Brisbane Queensland 4072 Australia
| | - Kevin S. Jack
- Centre for Microscopy and Microanalysis; The University of Queensland; Brisbane Queensland 4072 Australia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
- Centre for Advanced Imaging; The University of Queensland; Brisbane Queensland 4072 Australia
- Australian Research Council Centre of Excellence for Convergent Bio-Nano Science and Technology
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
- Australian Research Council Centre of Excellence for Convergent Bio-Nano Science and Technology
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14
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Nikkhah SJ, Moghbeli MR, Hashemianzadeh SM. Interfacial adhesion between functionalized polyethylene surface and graphene via molecular dynamic simulation. J Mol Model 2015; 21:121. [PMID: 25893516 DOI: 10.1007/s00894-015-2665-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 03/23/2015] [Indexed: 11/30/2022]
Abstract
In this study, interfacial adhesion between functionalized polyethylene (PE) surfaces and graphene were examined using molecular simulation. Various functional groups including amino, carboxy, hydroxy, cyano, isocyanato, oxo, and ethylamino were used to cover the PE surface with surface densities of 0.48, 1.30, and 4.84 groups per nm(2). The interfacial adhesion between the modified PE surfaces and the graphene was quantified via calculation of work of separation (Wsep), the amount of the required work to separate two surfaces without occurring any relaxation and diffusion phenomena. Insertion of the functional groups on the PE surface decreased the amount of Wsep, except for the oxo, amino, and higher densities of the carboxy groups. Increasing the surface group density enhanced the adhesion due to decreasing the surface atomic roughness and increasing the atomic density at the interface. In addition, the effect of surface group rearrangement was investigated via calculation of the work of adhesion (Wadh) while sufficient time had been devoted to relax the interface. The surface reorganization during the relaxation process significantly enhanced adhesion due to eliminating the surface roughness and increasing the surface atomic density.
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Affiliation(s)
- S Javan Nikkhah
- School of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran 16846-13114, Iran
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15
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A computer simulation study on the diffusion and permeation of dimethylformamide/water mixtures through poly(vinyl alcohol)/poly(acrylic acid) blend membranes. Chem Eng Res Des 2015. [DOI: 10.1016/j.cherd.2014.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Dasgupta Q, Chatterjee K, Madras G. Combinatorial approach to develop tailored biodegradable poly(xylitol dicarboxylate) polyesters. Biomacromolecules 2014; 15:4302-13. [PMID: 25322446 DOI: 10.1021/bm5013025] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The objective of this work was to develop a versatile strategy for preparing biodegradable polymers with tunable properties for biomedical applications. A family of xylitol-based cross-linked polyesters was synthesized by melt condensation. The effect of systematic variation of chain length of the diacid, stoichiometric ratio, and postpolymerization curing time on the physicochemical properties was characterized. The degradation rate decreased as the chain length of the diacid increased. The polyesters synthesized by this approach possess a diverse spectrum of degradation (ranging from ∼4 to 100% degradation in 7 days), mechanical strength (from 0.5 to ∼15 MPa) and controlled release properties. The degradation was a first-order process and the rate constant of degradation decreased linearly as the hydrophobicity of the polyester increased. In controlled release studies, the order of diffusion increased with chain length and curing time. The polymers were found to be cytocompatible and are thus suitable for possible use as biodegradable polymers. This work demonstrates that this particular combinatorial approach to polymer synthesis can be used to prepare biomaterials with independently tunable properties.
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Affiliation(s)
- Queeny Dasgupta
- Bioengineering Program, ‡Department of Materials Engineering, and §Department of Chemical Engineering, Indian Institute of Science , Bangalore-560012, India
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17
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Chai D, Xie Z, Wang Y, Liu L, Yum YJ. Molecular dynamics investigation of the adhesion mechanism acting between dopamine and the surface of dopamine-processed aramid fibers. ACS APPLIED MATERIALS & INTERFACES 2014; 6:17974-84. [PMID: 25275919 DOI: 10.1021/am504799m] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Dopamine, as a universal material for surface treatment, can effectively improve the surface performance of aramid fibers. However, directly processing the surface of aramid fibers using dopamine currently incurs a high cost. To seek dopamine substitutes, one must first explore the adhesion mechanism responsible for binding the dopamine to the surface of the fiber. In this study, we construct an all-atomic molecular dynamics model of an aramid fiber before and after surface modification using dopamine. A force field based on condensed-phase optimized molecular potentials for atomistic simulation studies (COMPASS) is used. Using it, we analyze the surface adhesion mechanism of polydopamines aggregated by 21 kinds of molecular structures typically found on the surface of aramid fibers. The results show that a clear and smooth interface is formed between the polydopamine nanofilm layer and the surface of the aramid fiber. The high atomic density of the polydopamine in the small interface region is found to be conducive to noncovalent bonds of polydopamines with the surface of the aramid fiber. In addition, we investigate the works of adhesion of the 21 molecular structures typically found on the surface of aramid fibers. The results suggest that the work of adhesion of 5,6-indolequinone is the highest, followed by annular eumelanin molecules with annular planar structure. Straight-chain shaped dimers proved to be the molecules with the highest adhesion ability of the dihydroxyindole chain oligomers. Therefore, there is reason to suppose that more molecular structures (as above) can be formed by processing the surface of aramid fibers using dopamine by controlling the processing conditions. These molecular structures help improve the adhesion ability of the dopamine on the surface of the aramid fiber. Additionally, if these polydopamine molecules with high adhesion ability can be synthesized on a large scale, then new surface-processing materials are possible.
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Affiliation(s)
- Dongliang Chai
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environment, Center for Composite Materials, Harbin Institute of Technology , Harbin 150001, People's Republic of China
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18
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Neyertz S, Brown D. The effect of structural isomerism on carbon dioxide sorption and plasticization at the interface of a glassy polymer membrane. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.03.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Fujimori A, Kaneko Y, Kikkawa T, Chiba S, Shibasaki Y. Fabrication and structure of "polymer nanosphere multilayered organization". J Colloid Interface Sci 2014; 418:338-49. [PMID: 24461854 DOI: 10.1016/j.jcis.2013.12.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 12/13/2013] [Accepted: 12/16/2013] [Indexed: 11/19/2022]
Abstract
We constructed a multiparticle layered organization of aromatic polyamides with rigid main chains and flexible side chains by the Langmuir-Blodgett (LB) technique, which resulted in a highly regular arrangement along the c-axis. The particle arrangement was estimated by performing out-of-plane X-ray diffraction (XRD) analysis and atomic force microscopic (AFM) observation. The results suggest that a double-particle layered structure (Y-type) is formed by the LB technique, forming amphiphilic particles at the air/water interface. Copolymers with highly hydrophobic carbazole contents and both hydrogenated and fluorinated side-chains also formed a single-particle layer at the air/water interface and exhibited multiparticle layers by a LB technique. Therefore, it is possible to control the formation of single- and double-particle layered structure using these techniques. Further, it was found that multiparticle layered organization of polymer nanospheres and polymer nanosheets could be formed simultaneously with the same component material.
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Affiliation(s)
- Atsuhiro Fujimori
- Graduate School of Science and Engineering, Faculty of Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan.
| | - Yohei Kaneko
- Graduate School of Science and Engineering, Faculty of Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Takahiro Kikkawa
- Department of Functional Materials Science, Faculty of Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Satoshi Chiba
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonazawa, Yamagata 992-8510, Japan
| | - Yuji Shibasaki
- Department of Chemistry and Bioengineering, Faculty Engineering, Iwate University, Ueda 4-3-5, Morioka, Iwate 020-8551, Japan
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20
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Cui J, Yang L, Zhou L, Wang Y. Nanoscale soldering of axially positioned single-walled carbon nanotubes: a molecular dynamics simulation study. ACS APPLIED MATERIALS & INTERFACES 2014; 6:2044-2050. [PMID: 24392855 DOI: 10.1021/am405114n] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The miniaturization of electronics devices into the nanometer scale is indispensable for next-generation semi-conductor technology. Carbon nanotubes (CNTs) are considered to be the promising candidates for future interconnection wires. To study the carbon nanotubes interconnection during nanosoldering, the melting process of nanosolder and nanosoldering process between single-walled carbon nanotubes are simulated with molecular dynamics method. As the simulation results, the melting point of 2 nm silver solder is about 605 K because of high surface energy, which is below the melting temperature of Ag bulk material. In the nanosoldering process simulations, Ag atoms may be dragged into the nanotubes to form different connection configuration, which has no apparent relationship with chirality of SWNTs. The length of core filling nanowires structure has the relationship with the diameter, and it does not become longer with the increasing diameter of SWNT. Subsequently, the dominant mechanism of was analyzed. In addition, as the heating temperature and time, respectively, increases, more Ag atoms can enter the SWNTs with longer length of Ag nanowires. And because of the strong metal bonds, less Ag atoms can remain with the tight atomic structures in the gap between SWNT and SWNT. The preferred interconnection configurations can be achieved between SWNT and SWNT in this paper.
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Affiliation(s)
- Jianlei Cui
- Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education, Harbin Institute of Technology , Harbin 150001, China
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21
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Papadopoulou SK, Panayiotou C. Assessment of the thermodynamic properties of poly(2,2,2-trifluoroethyl methacrylate) by inverse gas chromatography. J Chromatogr A 2014; 1324:207-14. [DOI: 10.1016/j.chroma.2013.11.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/22/2013] [Accepted: 11/22/2013] [Indexed: 11/29/2022]
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22
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Neyertz S, Brown D. Molecular Dynamics Study of Carbon Dioxide Sorption and Plasticization at the Interface of a Glassy Polymer Membrane. Macromolecules 2013. [DOI: 10.1021/ma302073u] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Sylvie Neyertz
- LEPMI (LMOPS), UMR 5279 CNRS, Grenoble
INP, University
of Savoie, University J. Fourier, Bât.
IUT, Savoie Technolac, 73376 Le Bourget du Lac Cedex, France
| | - David Brown
- LEPMI (LMOPS), UMR 5279 CNRS, Grenoble
INP, University
of Savoie, University J. Fourier, Bât.
IUT, Savoie Technolac, 73376 Le Bourget du Lac Cedex, France
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23
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Yang S, Choi J, Cho M. Elastic stiffness and filler size effect of covalently grafted nanosilica polyimide composites: molecular dynamics study. ACS APPLIED MATERIALS & INTERFACES 2012; 4:4792-4799. [PMID: 22931169 DOI: 10.1021/am301144z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The filler size-dependent elastic stiffness of nanosilica (α-quartz)-reinforced polyimide(s-BPDA/1,3,4-APB) composites under the same volume fraction and grafting ratio conditions was investigated via molecular dynamics(MD) simulations. To enhance the interfacial load transfer efficiency, we treated the surface oxygen atoms of the silica nanoparticle with additional silicon atoms attached by a propyl group to which the aromatic hydrocarbon in the polyimide is directly grafted. As the radius of the embedded nanoparticle increases, the Young's and shear moduli gradually decrease, showing a prominent filler size effect. At the same time, the moduli of the nanocomposites increase as the grafting ratio increases. The contribution of different nanoparticles to the filler size dependency in elastic stiffness of the nanocomposites can be elucidated by comparing the normalized adhesive interaction energy between the particle and matrix which exhibits prominent filler size dependency. Because of the immobilization of the matrix polymer in the vicinity of the nanoparticles, which was confirmed by the self-diffusion coefficient, the highly grafted interface is found to bring about a greater reinforcing effect than the ungrafted interface.
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Affiliation(s)
- Seunghwa Yang
- Division of WCU Multiscale Mechanical Design, School of Mechanical and Aerospace Engineering, Seoul National University 599, Kwanak-Ro, Kwanak-Ku, Seoul151-744, Korea
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24
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An Q, Xu W, Hao L, Fu Y, Huang L. Fabrication of superhydrophobic fabric coating using microphase-separated dodecafluoroheptyl-containing polyacrylate and nanosilica. J Appl Polym Sci 2012. [DOI: 10.1002/app.38503] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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25
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Liu H, Li Y, Krause WE, Rojas OJ, Pasquinelli MA. The Soft-Confined Method for Creating Molecular Models of Amorphous Polymer Surfaces. J Phys Chem B 2012; 116:1570-8. [DOI: 10.1021/jp209024r] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Hongyi Liu
- Fiber and Polymer Science Program and the Department of Textile Engineering, Chemistry, and Science, North Carolina State University, Raleigh, NC 27695, United States
| | - Yan Li
- The KAUST-Cornell Center for Energy and Sustainability (KAUST-CU), Cornell University, Ithaca, New York 14853, United States
| | - Wendy E. Krause
- Fiber and Polymer Science Program and the Department of Textile Engineering, Chemistry, and Science, North Carolina State University, Raleigh, NC 27695, United States
| | - Orlando J. Rojas
- Fiber and Polymer Science Program and the Department of Textile Engineering, Chemistry, and Science, North Carolina State University, Raleigh, NC 27695, United States
- Department of Forest Biomaterials, North Carolina State University, Raleigh, North Carolina 27695, United States
- Department of Forest Products Technology, School of Chemical Technology, Aalto University, P.O. Box 16300, FI-00076 Aalto, Finland
| | - Melissa A. Pasquinelli
- Fiber and Polymer Science Program and the Department of Textile Engineering, Chemistry, and Science, North Carolina State University, Raleigh, NC 27695, United States
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26
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Gu H, Zhang J, Faucher S, Zhu S. Novel Polymeric Surfadditives Synthesized via Atom Transfer Radical Polymerization and Their Surface Migration Properties. MACROMOL REACT ENG 2011. [DOI: 10.1002/mren.201100026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Sudibjo A, Spearot DE. Molecular dynamics simulation of diffusion of small atmospheric penetratesin polydimethylsiloxane. MOLECULAR SIMULATION 2011. [DOI: 10.1080/08927022.2010.524646] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Lin SL, Wen XF, Cai ZQ, Pi PH, Zheng DF, Cheng J, Zhang LJ, Qian Y, Yang ZR. Synthesis and dissipative particle dynamics simulation of cross-linkable fluorinated diblock copolymers: self-assembly aggregation behavior in different solvents. Phys Chem Chem Phys 2011; 13:17323-32. [DOI: 10.1039/c1cp20186g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Papadopoulou SK, Karapanagiotis I, Zuburtikudis I, Panayiotou C. Thermodynamic characterization of poly(2,2,3,3,3-pentafluoropropyl methacrylate). ACTA ACUST UNITED AC 2010. [DOI: 10.1002/polb.22053] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Papadopoulou SK, Dritsas G, Karapanagiotis I, Zuburtikudis I, Panayiotou C. Surface characterization of poly(2,2,3,3,3-pentafluoropropyl methacrylate) by inverse gas chromatography and contact angle measurements. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2009.11.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Neyertz S, Brown D. Molecular Dynamics Simulations of Oxygen Transport through a Fully Atomistic Polyimide Membrane. Macromolecules 2008. [DOI: 10.1021/ma7026676] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sylvie Neyertz
- LMOPS-UMR CNRS 5041, University of Savoie, Bât IUT, 73376 Le Bourget du Lac Cedex, France
| | - David Brown
- LMOPS-UMR CNRS 5041, University of Savoie, Bât IUT, 73376 Le Bourget du Lac Cedex, France
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Mixed matrix membranes of sodium alginate and poly(vinyl alcohol) for pervaporation dehydration of isopropanol at different temperatures. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.06.064] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Prathab B, Aminabhavi TM. Atomistic simulations to compute surface properties of poly(N-vinyl-2-pyrrolidone) (PVP) and blends of PVP/chitosan. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:5439-44. [PMID: 17402756 DOI: 10.1021/la063228u] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Atomistic simulations were performed on poly(N-vinyl-2-pyrrolidone) (PVP) and its blends with chitosan (CS) in different ratios using molecular mechanics (MM) and molecular dynamics (MD) simulations in three-dimensionally periodic and effective two-dimensionally periodic condensed phases. Four independent microstructures were generated to analyze their surface properties. The calculated surface-energy values for PVP compared quite well with the experimental data reported in the literature. The density profile was analyzed, and the structure of the films showed an interior region of the bulk density. Various components of the energetic interactions (torsional, van der Waals, etc.) were examined to gain deeper insight into the nature of regular and anomalous interactions between the bulk and the surface films. Surface energies of PVP/CS blends were computed by MD simulations using the bulk pressure-volume-temperature (PVT) parameters. Bulk properties such as the cohesive energy density (CED) and solubility parameter (delta) were calculated using MM and MD simulations in the NVT ensemble under periodic boundary conditions. The Flory equation of state was used to compute the thermal expansion coefficient as well as PVT parameters. These surface-energy values agreed well with the surface-energy data calculated using the Zisman equation, which were also in accordance with the experimental observations. The results from this study suggest that computer simulations would provide valuable information on polymers and polymer-blend surfaces.
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Affiliation(s)
- B Prathab
- Molecular Modeling Division, Center of Excellence in Polymer Science, Karnatak University, Dharwad, India 580 003
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Jawalkar SS, Aminabhavi TM. Molecular dynamics simulations to compute diffusion coefficients of gases into polydimethylsiloxane and poly{(1,5- naphthalene)-co-[1,4-durene-2,2′-bis(3,4-dicarboxyl phenyl)hexafluoropropane diimide]}. POLYM INT 2007. [DOI: 10.1002/pi.2226] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Prathab B, Aminabhavi TM. Molecular modeling study on surface, thermal, mechanical and gas diffusion properties of chitosan. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/polb.21109] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Prathab B, Subramanian V, Aminabhavi T. Computation of surface energy and surface segregation phenomena of perfluorinated copolymers and blends – A molecular modeling approach. POLYMER 2007. [DOI: 10.1016/j.polymer.2006.10.043] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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