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Morozova TI, García NA, Barrat JL, Luengo GS, Léonforte F. Adsorption and Desorption of Polymers on Bioinspired Chemically Structured Substrates. ACS APPLIED MATERIALS & INTERFACES 2021; 13:30086-30097. [PMID: 34151554 DOI: 10.1021/acsami.1c07425] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Natural biological surfaces exhibit interesting properties due to their inhomogeneous chemical and physical structure at the micro- and nanoscale. In the case of hair or skin, this also influences how waterborne macromolecules ingredients will adsorb and form cosmetically performing deposits (i.e., shampoos, cleansers, etc.). Here, we study the adsorption of hydrophilic flexible homopolymers on heterogeneous, chemically patterned substrates that represent the surface of the hair by employing coarse-grained molecular dynamics simulations. We develop a method in which the experimental images of the substrate are used to obtain information about the surface properties. We investigate the polymer adsorption as a function of polymer chain length and polymer concentration spanning both dilute and semidilute regimes. Adsorbed structures are quantified in terms of trains, loops, and tails. We show that upon increasing polymer concentration, the length of tails and loops increases at the cost of monomers belonging to trains. Furthermore, using an effective description, we probe the stability of the resulting adsorbed structures under a linear shear flow. Our work is a first step toward developing models of complex macromolecules interacting with realistic biological surfaces, as needed for the development of more ecofriendly industrial products.
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Affiliation(s)
| | - Nicolás A García
- Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble 38042, France
| | - Jean-Louis Barrat
- Univ. Grenoble Alpes, CNRS, LIPhy, Grenoble 38000, France
- Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble 38042, France
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Yu L, Hou Y, Cheng C, Schlaich C, Noeske PLM, Wei Q, Haag R. High-Antifouling Polymer Brush Coatings on Nonpolar Surfaces via Adsorption-Cross-Linking Strategy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:44281-44292. [PMID: 29188709 DOI: 10.1021/acsami.7b13515] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new "adsorption-cross-linking" technology is presented to generate a highly dense polymer brush coating on various nonpolar substrates, including the most inert and low-energy surfaces of poly(dimethylsiloxane) and poly(tetrafluoroethylene). This prospective surface modification strategy is based on a tailored bifunctional amphiphilic block copolymer with benzophenone units as the hydrophobic anchor/chemical cross-linker and terminal azide groups for in situ postmodification. The resulting polymer brushes exhibited long-term and ultralow protein adsorption and cell adhesion benefiting from the high density and high hydration ability of polyglycerol blocks. The presented antifouling brushes provided a highly stable and robust bioinert background for biospecific adsorption of desired proteins and bacteria after secondary modification with bioactive ligands, e.g., mannose for selective ConA and Escherichia coli binding.
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Affiliation(s)
- Leixiao Yu
- Institute of Chemistry and Biochemistry, Freie Universität Berlin , Takustr. 3, 14195 Berlin, Germany
| | - Yong Hou
- Institute of Chemistry and Biochemistry, Freie Universität Berlin , Takustr. 3, 14195 Berlin, Germany
| | - Chong Cheng
- Institute of Chemistry and Biochemistry, Freie Universität Berlin , Takustr. 3, 14195 Berlin, Germany
| | - Christoph Schlaich
- Institute of Chemistry and Biochemistry, Freie Universität Berlin , Takustr. 3, 14195 Berlin, Germany
| | - Paul-Ludwig Michael Noeske
- Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM , Wiener Str. 12, 28359 Bremen, Germany
| | - Qiang Wei
- Institute of Chemistry and Biochemistry, Freie Universität Berlin , Takustr. 3, 14195 Berlin, Germany
- Department of Cellular Biophysics, Max-Planck Institute for Medical Research, Heidelberg , Heisenbergstr. 3, 70569 Stuttgart, Germany
- Multifunctional Biomaterials for Medicine, Helmholtz Virtual Institute , Kantstr. 55, 14513 Teltow-Seehof, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin , Takustr. 3, 14195 Berlin, Germany
- Multifunctional Biomaterials for Medicine, Helmholtz Virtual Institute , Kantstr. 55, 14513 Teltow-Seehof, Germany
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Zhang S, Vi T, Luo K, Koberstein JT. Kinetics of Polymer Interfacial Reactions: Polymer Brush Formation by Click Reactions of Alkyne End-Functional Polymers with Azide-Functional Substrates. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01220] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shuo Zhang
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Thu Vi
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Kai Luo
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Jeffrey T. Koberstein
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
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Miura T, Seki K. Effects of surface affinity on the ordering dynamics of self-assembled monolayers of chain molecules: Transition from a parallel to a perpendicular structure. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 91:052604. [PMID: 26066191 DOI: 10.1103/physreve.91.052604] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Indexed: 06/04/2023]
Abstract
The effects of surface interactions on the ordering dynamics of self-assembled monolayers (SAM) of chain molecules were studied using molecular dynamics simulations. When the strength of surface-chain interactions was equal to or less than that of chain-chain interactions, domains of chain molecules adsorbed perpendicular to the surface ("upright" chains) formed on the surface. Although chain molecules adsorbed parallel to the surface ("lying" chains) were initially observed on the surface, they did not develop into two-dimensionally aligned structures. In contrast, when the strength of surface-chain interactions was at least twice that of chain-chain interactions, the proportion of upright chain molecules was initially small, and the reorientation of lying chains was observed shortly afterwards. In this case, the reorientation from lying to upright configuration developed slowly from the domain boundaries of two-dimensionally aligned structures late in the calculation period. Although the orientation processes of chain molecules on surfaces were strongly influenced by the strength of surface-chain interactions, the total adsorption rate on the surface was not. We also analyzed the maximum area of domains formed by lying chains. The development of two-dimensionally aligned domains required strong surface-chain interactions to prevent the spontaneous formation of nuclei of upright domains.
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Affiliation(s)
- Toshiaki Miura
- National Institute of Advanced Industrial Science and Technology (AIST), AIST Central2, 1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Kazuhiko Seki
- National Institute of Advanced Industrial Science and Technology (AIST), AIST Central2, 1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
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Kuppa VK. Molecular weight distribution effects on the structure of strongly adsorbed polymers by Monte Carlo simulation. J Chem Phys 2012; 136:214902. [DOI: 10.1063/1.4725544] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ashcraft E, Ji H, Mays J, Dadmun M. Grafting Polymer Loops onto Functionalized Nanotubes: Monitoring Grafting and Loop Formation. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201000557] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Patton D, Knoll W, Advincula RC. Polymer Loops vs. Brushes on Surfaces: Adsorption, Kinetics, and Viscoelastic Behavior of α
,ω
-Thiol Telechelics on Gold. MACROMOL CHEM PHYS 2010. [DOI: 10.1002/macp.201000524] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Miura T, Mikami M. Molecular dynamics study of the effects of chain properties on the order formation dynamics of self-assembled monolayers of long-chain molecules. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2010; 81:021801. [PMID: 20365584 DOI: 10.1103/physreve.81.021801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Revised: 11/27/2009] [Indexed: 05/29/2023]
Abstract
The order formation dynamics of self-assembled monolayers (SAM) of long-chain molecules were studied using coarse-grained molecular dynamics simulations. The primary kinetic processes of surface order formation from solution are adsorption to the surface and surface diffusion. For long-chain molecules, the degrees of freedom of the chain structure and motion add various complexities to the order formation dynamics. Specifically, the strength of the chain interaction, the chain flexibility and the chain length play a significant role, and this work focused on the effects of these chain properties on the order formation dynamics. The adsorption dynamics of SAM molecules can be explained by the same theoretical framework as the polymer brush. On the other hand, the evolution of highly ordered structure is specific to SAM systems. Simulation results revealed that the development of oriented domains can be grouped into three types, isolated island growth, packing growth, and growth suppression, which depend on temperature and chain flexibility. In packing growth, oriented domains are formed gradually due to the decrease in free volume as the surface density becomes high, while the tilt of the adsorbed chain molecules does not become upright gradually as a whole. Rather, inside the oriented domains, the adsorbed chains adopt "standing" states with tilt angles almost equal to the final values, which contributes to the gradual increase in the total tilt order. The effect of chain length was also studied. In the case of semirigid chain molecules, longer-chain systems showed slightly slower growth in adsorption but faster growth in oriented domains. These simulation results reveal how chain properties influence the dynamics of oriented structure formation on surfaces.
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Affiliation(s)
- Toshiaki Miura
- National Institute of Advanced Industrial Science and Technology, AIST Central 2, 1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
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Linse P, Källrot N. Polymer Adsorption from Bulk Solution onto Planar Surfaces: Effect of Polymer Flexibility and Surface Attraction in Good Solvent. Macromolecules 2010. [DOI: 10.1021/ma902338m] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Per Linse
- Physical Chemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00 Lund, Sweden
| | - Niklas Källrot
- Physical Chemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00 Lund, Sweden
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Haung Z, Ji H, Mays J, Dadmun M, Smith G, Bedrov D, Zhang Y. Polymer loop formation on a functionalized hard surface: quantitative insight by comparison of experimental and Monte Carlo simulation results. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:202-209. [PMID: 20038168 DOI: 10.1021/la902012z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Polystyrene terminated with carboxylic acid end groups (telechelic polymer) was grafted from the melt onto a silicon wafer that contained a monolayer of epoxy groups. Ellipsometry and fluorimetry were employed to monitor the kinetics of the grafting and loop formation, respectively. These results are quantitatively correlated with bond fluctuation Monte Carlo (BFMC) simulations that model the grafting and loop formation process. The quantitative correlation found between experiment and simulation provides unique insight into the process of polymer loop formation. Specifically, this correlation provides a calibration of the fluorescence intensity to the amount of singly bound chains present on the surface, revealing that about 80% of the bound chains form loops on the surface at the longest reaction time studied, and provides the time evolution of singly and doubly bound chains during the reaction. Moreover, this correlation is broadly applicable and can be used to readily monitor the impact of a broad range of reaction conditions (e.g., temperature, telechelic concentration, surface density of functional groups) on the loop formation process. This correlation, therefore, provides a method to access fundamental information that is not accessible by experiment alone and yet is required to tailor surface properties through adjusting the coverage and fraction of loops in the grafted layer and to correlate surface-sensitive properties to specific grafted layer structure.
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Affiliation(s)
- Zhenyu Haung
- Chemistry Department, University of Tennessee, Knoxville, Tennessee 37996, USA
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Koutsioubas AG, Spiliopoulos N, Anastassopoulos DL, Vradis AA, Toprakcioglu C. Formation of polymer brushes inside cylindrical pores: a computer simulation study. J Chem Phys 2009; 131:044901. [PMID: 19655913 DOI: 10.1063/1.3179686] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The formation process of polymer brushes, formed by the adsorption of flexible end-functionalized chains from dilute solutions on the inner surface of cylindrical pores is studied by bond fluctuation Monte Carlo simulations. Various properties as the grafting density, monomer, and free-end distribution are monitored as a function of pore diameter D and chain length N. Two different modes of end-segment attachment on the inner pore surface are considered: (a) pure-irreversible "hard" grafting and (b) irreversible "soft" grafting where grafted-ends can move freely on the pore surface but cannot detach from it. Different regimes of pore coating are identified, depending on the mode of end-segment attachment and on the ratio of D to the radius of gyration of the free polymer chains in solution R(g). These initial findings can be used as a guide for the preparation of actual polymer brushes inside ordered porous membranes by the "grafting to" approach.
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Ashcraft E, Ji H, Mays J, Dadmun M. A novel reactive processing technique: using telechelic polymers to reactively compatibilize polymer blends. ACS APPLIED MATERIALS & INTERFACES 2009; 1:2163-2173. [PMID: 20355850 DOI: 10.1021/am900333y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Difunctional reactive polymers, telechelics, were used to reactively form multiblock copolymers in situ when melt-blended with a blend of polystyrene and polyisoprene. To quantify the ability of the copolymer to compatibilize the blends, the time evolution of the domain size upon annealing was analyzed by SEM. It was found that the most effective parameter to quantify the ability of the copolymer to inhibit droplet coalescence is K(rel)t(stable), the relative coarsening constant multiplied by the stabilization time. These results indicate that intermediate-molecular-weight telechelic pairs of both highly reactive Anhydride-PS-Anhydride/NH(2)-PI-NH(2) and slower reacting Epoxy-PS-Epoxy/COOH-PI-COOH both effectively suppress coalescence, with the optimal molecular weight being slightly above the critical molecular weight of the homopolymer, M(c). The effects of telechelic loading were also investigated, where the optimal loading concentration for this system was 0.5 wt %, as higher concentrations exhibited a plasticizing effect due to the presence of unreacted low-molecular-weight telechelics present in the blend. A determination of the interfacial coverage of the copolymer shows that a conversion of approximately 1.5-3.0% was required for 20% surface coverage at 5.0 wt % telechelic loading, indicating a large excess of telechelics in this system. At the optimal loading level of 0.5 wt %, a conversion of 15% was required for 20% surface coverage. The results of these experiments provide a clear understanding of the role of telechelic loading and molecular weight on its ability to reactively form interfacial modifiers in phase-separated polymer blends and provide guidelines for the development of similar reactive processing schemes that can use telechelic polymers to reactively compatibilize a broad range of polymer blends.
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Affiliation(s)
- Earl Ashcraft
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
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Hiotelis I, Koutsioubas AG, Spiliopoulos N, Anastassopoulos DL, Vradis AA, Toprakcioglu C, Menelle A, Sakellariou G, Hadjichristidis N. Neutron Reflectivity and Computer Simulation Studies of Self-Assembled Brushes Formed by Centrally Adsorbed Star Polymers. Macromolecules 2008. [DOI: 10.1021/ma702749z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ioannis Hiotelis
- Physics Department, University of Patras, Patras 26500, Greece 26500; Laboratoire Leon Brillouin, CEA SACLAY, 91191 Gif-sur-Yvette Cedex, France; and Chemistry Department, University of Athens, Panepistimioupoli Zografou 15771, Greece
| | - Alexandros G. Koutsioubas
- Physics Department, University of Patras, Patras 26500, Greece 26500; Laboratoire Leon Brillouin, CEA SACLAY, 91191 Gif-sur-Yvette Cedex, France; and Chemistry Department, University of Athens, Panepistimioupoli Zografou 15771, Greece
| | - Nikolaos Spiliopoulos
- Physics Department, University of Patras, Patras 26500, Greece 26500; Laboratoire Leon Brillouin, CEA SACLAY, 91191 Gif-sur-Yvette Cedex, France; and Chemistry Department, University of Athens, Panepistimioupoli Zografou 15771, Greece
| | - Dimitris L. Anastassopoulos
- Physics Department, University of Patras, Patras 26500, Greece 26500; Laboratoire Leon Brillouin, CEA SACLAY, 91191 Gif-sur-Yvette Cedex, France; and Chemistry Department, University of Athens, Panepistimioupoli Zografou 15771, Greece
| | - Alexandros A. Vradis
- Physics Department, University of Patras, Patras 26500, Greece 26500; Laboratoire Leon Brillouin, CEA SACLAY, 91191 Gif-sur-Yvette Cedex, France; and Chemistry Department, University of Athens, Panepistimioupoli Zografou 15771, Greece
| | - Chris Toprakcioglu
- Physics Department, University of Patras, Patras 26500, Greece 26500; Laboratoire Leon Brillouin, CEA SACLAY, 91191 Gif-sur-Yvette Cedex, France; and Chemistry Department, University of Athens, Panepistimioupoli Zografou 15771, Greece
| | - Alain Menelle
- Physics Department, University of Patras, Patras 26500, Greece 26500; Laboratoire Leon Brillouin, CEA SACLAY, 91191 Gif-sur-Yvette Cedex, France; and Chemistry Department, University of Athens, Panepistimioupoli Zografou 15771, Greece
| | - George Sakellariou
- Physics Department, University of Patras, Patras 26500, Greece 26500; Laboratoire Leon Brillouin, CEA SACLAY, 91191 Gif-sur-Yvette Cedex, France; and Chemistry Department, University of Athens, Panepistimioupoli Zografou 15771, Greece
| | - Nikos Hadjichristidis
- Physics Department, University of Patras, Patras 26500, Greece 26500; Laboratoire Leon Brillouin, CEA SACLAY, 91191 Gif-sur-Yvette Cedex, France; and Chemistry Department, University of Athens, Panepistimioupoli Zografou 15771, Greece
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Huang Z, Ji H, Mays JW, Dadmun MD. Understanding the Grafting of Telechelic Polymers on a Solid Substrate to Form Loops. Macromolecules 2008. [DOI: 10.1021/ma071836q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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