skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Effect of surface properties and polymer chain length on polymer adsorption in solution

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/5.0052121· OSTI ID:1817716

In polymer nanoparticle composites (PNCs) with attractive interactions between nanoparticles (NPs) and polymers, a bound layer of the polymer forms on the NP surface, with significant effects on the macroscopic properties of the PNCs. The adsorption and wetting behaviors of polymer solutions in the presence of a solid surface are critical to the fabrication process of PNCs. In this study, we use both classical density functional theory (cDFT) and molecular dynamics (MD) simulations to study dilute and semi-dilute solutions of short polymer chains near a solid surface. Using cDFT, we calculate the equilibrium properties of polymer solutions near a flat surface while varying the solvent quality, surface–fluid interactions, and the polymer chain lengths to investigate their effects on the polymer adsorption and wetting transitions. Using MD simulations, we simulate polymer solutions near solid surfaces with three different curvatures (a flat surface and NPs with two radii) to study the static conformation of the polymer bound layer near the surface and the dynamic chain adsorption process. Additionally, we find that the bulk polymer concentration at which the wetting transition in the poor solvent system occurs is not affected by the difference in surface–fluid interactions; however, a threshold value of surface–fluid interaction is needed to observe the wetting transition. We also find that with good solvent, increasing the chain length or the difference in the surface–polymer interaction relative to the surface–solvent interaction increases the surface coverage of polymer segments and independent chains for all surface curvatures. Finally, we demonstrate that the polymer segmental adsorption times are heavily influenced only by the surface–fluid interactions, although polymers desorb more quickly from highly curved surfaces.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)
Grant/Contract Number:
NA0003525; SC0016421
OSTI ID:
1817716
Alternate ID(s):
OSTI ID: 1808212
Report Number(s):
SAND-2021-9326J; 697740; TRN: US2213905
Journal Information:
Journal of Chemical Physics, Vol. 155, Issue 3; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (79)

Polymer adsorption: concentration effects journal January 1987
Effects of surface roughness on adsorbed polymers journal March 1991
Adsorption and Desorption Dynamics of Linear Polymer Chains to Spherical Nanoparticles:  A Monte Carlo Investigation journal April 2006
Macromolecule and Particle Dynamics in Confined Media journal August 2016
50th Anniversary Perspective : Are Polymer Nanocomposites Practical for Applications? journal January 2017
Numerical challenges in the application of density functional theory to biology and nanotechnology journal November 2002
Enhancing the Mechanical Properties of Glassy Nanocomposites by Tuning Polymer Molecular Weight journal September 2018
Review and reproducibility of forming adsorbed layers from solvent washing of melt annealed films journal January 2020
Tuning mechanical properties of nanocomposites with bimodal polymer bound layers journal January 2014
Segmental Dynamics of Polymer Melts with Spherical Nanoparticles journal July 2014
Kinetics of exchange between adsorbed and free polymers at a solid/liquid interface journal June 1989
Surface excess in dilute polymer solutions and the adsorption transition versus wetting phenomena journal May 2003
The interfacial zone in thin polymer films and around nanoparticles in polymer nanocomposites journal September 2019
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Modified interfacial statistical associating fluid theory: A perturbation density functional theory for inhomogeneous complex fluids journal December 2007
Entanglement Reduction and Anisotropic Chain and Primitive Path Conformations in Polymer Melts under Thin Film and Cylindrical Confinement journal September 2014
Role of Casting Solvent on Nanoparticle Dispersion in Polymer Nanocomposites journal July 2014
The Bimodal Energy Landscape When Polymers Adsorb journal January 1996
Adsorption and self-assembly of linear polymers on surfaces: a computer simulation study journal January 2009
Polymer Chain Swelling Induced by Dispersed Nanoparticles journal February 2008
Molecular dynamics simulations of polymer transport in nanocomposites journal April 2005
Surface-Induced First-Order Transition in Athermal Polymer-Nanoparticle Blends journal December 2007
Neutral and charged polymers at interfaces journal June 2003
Kinetics of polymer adsorption and desorption journal February 1991
Non-equilibrium in adsorbed polymer layers journal January 2005
Toward Quantitative Coarse-Grained Models of Lipids with Fluids Density Functional Theory journal March 2012
Fundamental measure theory for hard-sphere mixtures revisited: the White Bear version journal November 2002
Monte Carlo simulations of the exchange kinetics of polymers adsorbed on a solid surface journal July 1999
Perspective: Outstanding theoretical questions in polymer-nanoparticle hybrids journal July 2017
Direct Measurement of Polymer Chain Conformation in Well-Controlled Model Nanocomposites by Combining SANS and SAXS journal December 2010
Structural Properties of Bound Layer in Polymer–Nanoparticle Composites journal September 2020
Influence of the Bound Polymer Layer on Nanoparticle Diffusion in Polymer Melts journal September 2016
Bound Polymer Layer in Nanocomposites journal April 2013
Controlling the Thermomechanical Behavior of Nanoparticle/Polymer Films journal July 2014
Molecular dynamics study of adsorption and spreading of a polymer chain onto a flat surface journal December 1999
Segmental Diffusion in Attractive Polymer Nanocomposites: A Quasi-Elastic Neutron Scattering Study journal January 2019
An Equilibrium Theory for Exclusion Chromatography of Branched and Linear Polymer Chains journal January 1969
Interfacial mobility scale determines the scale of collective motion and relaxation rate in polymer films journal June 2014
Interplay between local dynamics and mechanical reinforcement in glassy polymer nanocomposites journal November 2017
Polymer Chain Behavior in Polymer Nanocomposites with Attractive Interactions journal March 2016
Do Very Small POSS Nanoparticles Perturb s-PMMA Chain Conformations? journal July 2018
Conformations of Silica−Poly(ethylene−propylene) Nanocomposites journal December 2010
Focus: Structure and dynamics of the interfacial layer in polymer nanocomposites with attractive interactions journal May 2017
Irreversible adsorption of polymer melts and nanoconfinement effects journal January 2020
Revisiting Polymer Surface Diffusion in the Extreme Case of Strong Adsorption journal November 2014
Wetting laws for polymer solutions journal January 1997
Scaling theory of polymer adsorption : proximal exponent journal January 1983
Unraveling the Molecular Weight Dependence of Interfacial Interactions in Poly(2-vinylpyridine)/Silica Nanocomposites journal January 2017
Bifurcation Tracking Algorithms and Software for Large Scale Applications journal March 2005
A review of wetting versus adsorption, complexions, and related phenomena: the rosetta stone of wetting journal June 2013
Kinetic traps in polymer adsorption: exchange of polystyrene between the adsorbed state and a good solvent journal September 1992
Bound Layers “Cloak” Nanoparticles in Strongly Interacting Polymer Nanocomposites journal November 2016
Entanglement network in nanoparticle reinforced polymers journal June 2009
Surface-induced phase behavior of polymer/nanoparticle blends with attractions journal April 2012
The origin and characterization of conformational heterogeneity in adsorbed polymer layers journal September 1997
Dynamic Study of Single-Chain Adsorption and Desorption journal June 2007
Exchange kinetics between the adsorbed state and free solution: poly(methyl methacrylate) in carbon tetrachloride journal June 1990
Molecular Dynamics Simulation of a Polymer Melt with a Nanoscopic Particle journal May 2002
Polymer adsorption on rough surfaces journal March 2018
Unexpected Molecular Weight Effect in Polymer Nanocomposites journal January 2016
Polymer solutions near an interface. Adsorption and depletion layers journal November 1981
Polymer adsorption – reversible or irreversible? journal January 2020
Dramatic Increase in Polymer Glass Transition Temperature under Extreme Nanoconfinement in Weakly Interacting Nanoparticle Films journal May 2018
Single-Molecule Observation of Long Jumps in Polymer Adsorption journal October 2013
Polymer conformations in polymer nanocomposites containing spherical nanoparticles journal January 2015
Modeling of Polymer Structure and Conformations in Polymer Nanocomposites from Atomistic to Mesoscale: A Review journal January 2016
Ultrapermeable, Reverse-Selective Nanocomposite Membranes journal April 2002
Kinetic Traps in Polymer Adsorption. 1. Polystyrene Displaced by Polyisoprene at 12 .degree.C journal August 1994
Polymer Chain Conformations in CNT/PS Nanocomposites from Small Angle Neutron Scattering journal June 2013
Surface effects on polymer blends and block copolymer melts: Theoretical concepts of surface enrichment, surface induced phase separation and ordering journal June 1995
Irreversible Adsorption of a Concentrated Polymer Solution journal January 1992
Dynamics of polymer segments, polymer chains, and nanoparticles in polymer nanocomposite melts: A review journal June 2020
On the self-similar structure of adsorbed polymer layers: dependence of the density profile on molecular weight and solution concentration journal June 1992
Immobilized Polymer Layers on Spherical Nanoparticles journal April 2010
Polymer-Grafted Nanoparticle Membranes with Controllable Free Volume journal September 2017
Short chains at solid surfaces: Wetting transition from a density functional approach journal January 2004
Effect of Physical Nanoconfinement on the Viscosity of Unentangled Polymers during Capillary Rise Infiltration journal July 2018
How Polymer Surface Diffusion Depends on Surface Coverage journal February 2007
Dynamics at the Polymer/Nanoparticle Interface in Poly(2-vinylpyridine)/Silica Nanocomposites journal February 2014