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PLOS ONE  2013 

Polymer Brushes under High Load

DOI: 10.1371/journal.pone.0058392

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Abstract:

Polymer coatings are frequently used to provide repulsive forces between surfaces in solution. After 25 years of design and study, a quantitative model to explain and predict repulsion under strong compression is still lacking. Here, we combine experiments, simulations, and theory to study polymer coatings under high loads and demonstrate a validated model for the repulsive forces, proposing that this universal behavior can be predicted from the polymer solution properties.

References

[1]  Milner S (1988) Compressing polymer brushes - A quantitative comparison of theory and experiment. Europhys Lett 7: 695–699.
[2]  Swann D, Bloch K, Swindell D, Shore E (1984) The lubricating activity of human synovial-fluids. Arthritis Rheum 27: 552–556.
[3]  Urbakh M, Klafter J, Gourdon D, Israelachvili J (2004) The nonlinear nature of friction. Nature 430: 525–528.
[4]  Hamley IW (2007) Introduction to soft matter: Synthetic and biological self-assembling materials, Revised Ed. Chichester: John Wiley & Sons, Ltd.
[5]  Taunton H, Toprakcioglu C, Fetters L, Klein J (1988) Forces between surfaces bearing terminally anchored polymer-chains in good solvents. Nature 332: 712–714.
[6]  Taunton H, Toprakcioglu C, Fetters L, Klein J (1990) Interactions between surfaces bearing end-adsorbed chains in a good solvent. Macromolecules 23: 571–580.
[7]  Auroy P, Auvray L, Leger L (1991) Characterization of the brush regime for grafted polymer layers at the solid-liquid interface. Phys Rev Lett 66: 719–722.
[8]  Drobek T, Spencer N, Heuberger M (2005) Compressing PEG brushes. Macromolecules 38: 5254–5259.
[9]  Ruths M, Johannsmann D, Ruhe J, Knoll W (2000) Repulsive forces and relaxation on compression of entangled, polydisperse polystyrene brushes. Macromolecules 33: 3860–3870.
[10]  Watanabe H, Tirrell M (1993) Measurement of forces in symmetrical and asymmetric interactions between diblock copolymer layers adsorbed on mica. Macromolecules 26: 6455–6466.
[11]  Zappone B, Ruths M, Greene GW, Jay GD, Israelachvili JN (2007) Adsorption, lubrication, and wear of lubricin on model surfaces: Polymer brush-like behavior of a glycoprotein. Biophys J 92: 1693–1708.
[12]  Kim JU, Matsen MW (2007) Finite-stretching corrections to the Milner-Witten-Cates theory for polymer brushes. Euro Phys J E 23: 135–144.
[13]  Kim JU, Matsen MW (2009) Compression of polymer brushes: Quantitative comparison of Self-Consistent Field Theory with experiment. Macromolecules 42: 3430–3432.
[14]  Milner S, Witten T, Cates M (1988) Theory of the grafted polymer brush. Macromolecules 21: 2610–2619.
[15]  Alexander S (1977) Polymer adsorption on small spheres - Scaling approach. J Phys-Paris 38: 977–981.
[16]  deGennes P (1980) Conformations of polymers attached to an interface. Macromolecules 13: 1069–1075.
[17]  Szleifer I, Carignano MA (1996) Tethered polymer layers. In: Advances in chemical physics. New York: pp. 165–260.
[18]  Carignano MA, Szleifer I (1993) Statistical Thermodynamic theory of grafted polymeric layers. J Chem Phys 98: 5006–5018.
[19]  Murat M, Grest G (1989) Interaction between grafted polymeric brushes - A Molecular-Dynamics study. Phys Rev Lett 63: 1074–1077.
[20]  Milner S, Witten T, Cates M (1989) Effects of polydispersity in the end-grafted polymer brush. Macromolecules 22: 853–861.
[21]  Grest G (1999) Normal and shear forces between polymer brushes. In: Granick, S, editor. Advances in polymer science. Berlin: pp. 149–183.
[22]  Kreer T, Binder K, Müser MH (2003) Friction between polymer brushes in good solvent conditions: Steady-state sliding versus transient behavior. Langmuir 19: 7551–7559.
[23]  Grest G, Kremer K (1986) Molecular-Dynamics simulation for polymers in the presence of a heat bath. Phys Rev A 33: 3628–3631.
[24]  Costanzo PJ (2005) Assembly mechanism and application of novel nanoaggregates. Davis: University of California, Davis.
[25]  Israelachvili J (1973) Thin-film studies using multiple-beam interferometry. J Colloid Interf Sci 44: 259–272.
[26]  Israelachvili JN, Adams GE (1978) Measurement of forces between 2 mica surfaces in aqueous-electrolyte solutions in range 0 - 100 nm. J Chem Soc Farad T 1 74: 975–1001.
[27]  Israelachvili JN (1992) Intermolecular and surface forces, 2nd Ed. London: Academic Press.
[28]  Moore NW, Mulder DJ, Kuhl TL (2008) Adhesion from tethered ligand-receptor bonds with microsecond lifetimes. Langmuir 24: 1212–1218.
[29]  Frenkel D, Smit B (2002) Understanding molecular simulations, 2nd Ed. San Diego: Academic Press.
[30]  Hoogerbrugge PJ, Koelman JMVA (1992) Simulating microscopic hydrodynamic phenomena with Dissipative Particle Dynamics. Europhys Lett 19: 155–160.
[31]  Espanol P (1995) Hydrodynamics from Dissipative Particle Dynamics. Phys Rev E 52: 1734–1742.
[32]  Espanol P, Warren P (1995) Statistical-Mechanics of Dissipative Particle Dynamics. Europhys Lett 30: 191–196.
[33]  Odian G (1991) Principles of polymerization, 3rd ed. New York: John Wiley & Sons, Inc.
[34]  Milner ST (1994) Strongly stretched polymer brushes. J Polym Sci Pol Phys 32: 2743–2755.
[35]  Simulation data leading to the equation of state was kindly provided by H. Meyer.
[36]  Chen M, Briscoe WH, Armes SP, Klein J (2009) Lubrication at physiological pressures by polyzwitterionic brushes. Science 323: 1698–1701.
[37]  Hadziioannou G, Patel S, Granick S, Tirrell M (1986) Forces between surfaces of block copolymers adsorbed on mica. J Am Chem Soc 108: 2869–2876.
[38]  Malham IB, Bureau L (2010) Density effects on collapse, compression, and adhesion of thermoresponsive polymer brushes. Langmuir 26: 4762–4768.
[39]  Liao WP, Kuhl TL (2012) Steric forces of tethered polymer chains as a function of grafting density: Studies with a single diblock molecular weight. Macromolecules 45: 5766–5772.
[40]  Klein J (1996) Shear, friction, and lubrication forces between polymer-bearing surfaces. Annu Rev Mater Sci 26: 581–612.
[41]  Mulder DJ, Kuhl TL (2010) Polymer brushes in restricted geometries. Soft Matter 6: 5401–5407.
[42]  Galuschko A, Spirin L, Kreer T, Johner A, Pastorino C, et al. (2010) Frictional forces between strongly compressed, nonentangled polymer brushes: Molecular Dynamics simulations and Scaling Theory. Langmuir 26: 6418–6429.
[43]  Spirin L, Galuschko A, Kreer T (2011) Response to shear inversion of polymer brushes with embedded colloids. Macromolecules 44: 9399–9410.
[44]  Spirin L, Galuschko A, Kreer T, Binder K, Baschnagel J (2011) Polymer-brush lubricated surfaces with colloidal inclusions under shear inversion. Phys Rev Lett 106: 168301.
[45]  Spirin L, Galuschko A, Kreer T, Johner A, Baschnagel J, et al. (2010) Polymer-brush lubrication in the limit of strong compression. Euro Phys J E 33: 307–311.
[46]  Zhulina E, Borisov O (1997) Structure and interaction of weakly charged polyelectrolyte brushes: Self-consistent field theory. J Chem Phys 107: 5952–5967.
[47]  Spirin L, Kreer T (2013) Strongly compressed polyelectrolyte brushes under shear. ACS Macro Letters 2: 63–66.

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