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Title: Confined dynamics of grafted polymer chains in solutions of linear polymer

Journal Article · · Macromolecules
ORCiD logo [1];  [1];  [2]; ORCiD logo [3];  [4];  [1];  [1]
  1. Univ. of Houston, TX (United States). Dept. of Chemical and Biomolecular Engineering
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS) outstation Juelich Centre for Neutron Science (JCNS), Forschungszentrum Juelich GmbH
  4. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Neutron Research

We measure the dynamics of high molecular weight polystyrene grafted to silica nanoparticles dispersed in semidilute solutions of linear polymer. Structurally, the linear free chains do not penetrate the grafted corona but increase the osmotic pressure of the solution, collapsing the grafted polymer and leading to eventual aggregation of the grafted particles at high matrix concentrations. Dynamically, the relaxations of the grafted polymer are controlled by the solvent viscosity according to the Zimm model on short time scales. On longer time scales, the grafted chains are confined by neighboring grafted chains, preventing full relaxation over the experimental time scale. Adding free linear polymer to the solution does not affect the initial Zimm relaxations of the grafted polymer but does increase the confinement of the grafted chains. Our results elucidate the physics underlying the slow relaxations of grafted polymer.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Welch Foundation
Grant/Contract Number:
AC02-06CH11357; DMR 1040446; AC05-00OR22725
OSTI ID:
1419950
Alternate ID(s):
OSTI ID: 1777821
Journal Information:
Macromolecules, Vol. 50, Issue 18; ISSN 0024-9297
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

References (53)

Polymer-Grafted-Nanoparticles Nanocomposites: Dispersion, Grafted Chain Conformation, and Rheological Behavior journal January 2011
Radioactive 198 Au-Doped Nanostructures with Different Shapes for In Vivo Analyses of Their Biodistribution, Tumor Uptake, and Intratumoral Distribution journal April 2014
Colloidal nanoparticles as advanced biological sensors journal October 2014
Dynamics of Macromolecules Grafted in Spherical Brushes under Good Solvent Conditions journal May 2013
Critical dynamics of a polymer chain in a grafted monolayer journal April 1991
Arm Retraction Dynamics in Dense Polymer Brushes journal July 2016
Probing Collective Motions of Terminally Anchored Polymers journal December 1996
Collective Dynamics of an End-Grafted Polymer Brush in Solvents of Varying Quality journal March 2004
Cooperative Diffusion of End-Grafted Polymer Brushes in Good Solvents journal October 2005
Dynamics of end-grafted polystyrene brushes in theta solvents journal January 2006
Computer Simulation Studies of Chain Dynamics in Polymer Brushes journal May 2012
Anisotropic self-assembly of spherical polymer-grafted nanoparticles journal March 2009
Structure of Polymer Tethered Highly Grafted Nanoparticles journal October 2011
Nanocomposites with Polymer Grafted Nanoparticles journal April 2013
High-Transparency Polymer Nanocomposites Enabled by Polymer-Graft Modification of Particle Fillers journal November 2014
Wetting–Dewetting and Dispersion–Aggregation Transitions Are Distinct for Polymer Grafted Nanoparticles in Chemically Dissimilar Polymer Matrix journal August 2015
Controlling Interfacial Dynamics: Covalent Bonding versus Physical Adsorption in Polymer Nanocomposites journal June 2016
Osmotic shrinkage in star/linear polymer mixtures journal June 2010
Depletion and cluster formation in soft colloid - polymer mixtures journal November 2005
Unusual Features of Depletion Interactions in Soft Polymer-Based Colloids Mixed with Linear Homopolymers journal February 2010
Cluster formation in star-linear polymer mixtures: equilibrium and dynamical properties journal January 2012
Colloidal star polymers: Models for studying dynamically arrested states in soft matter journal January 2004
Polymer-Mediated Melting in Ultrasoft Colloidal Gels journal October 2002
Grafting Rates of Amine-Functionalized Polystyrenes onto Epoxidized Silica Surfaces journal February 2000
Functionalization of Single-Walled Carbon Nanotubes with Polystyrene via Grafting to and Grafting from Methods journal February 2004
Nanoparticle Polymer Composites: Where Two Small Worlds Meet journal November 2006
The Mark–Houwink–Sakurada Equation for the Viscosity of Atactic Polystyrene journal October 1985
Reduction and analysis of SANS and USANS data using IGOR Pro journal November 2006
The spin-echo spectrometer at the Spallation Neutron Source (SNS)
  • Ohl, M.; Monkenbusch, M.; Arend, N.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 696 https://doi.org/10.1016/j.nima.2012.08.059
journal December 2012
Structure and Dynamics of Interacting Nanoparticles in Semidilute Polymer Solutions journal August 2016
DAVE: A Comprehensive Software Suite for the Reduction, Visualization, and Analysis of Low Energy Neutron Spectroscopic Data
  • Azuah, Richard Tumanjong; Kneller, Larry R.; Qiu, Yiming
  • Journal of Research of the National Institute of Standards and Technology, Vol. 114, Issue 6 https://doi.org/10.6028/jres.114.025
journal November 2009
Analysis of Classical Statistical Mechanics by Means of Collective Coordinates journal April 1958
Small-angle scattering from porous solids with fractal geometry journal August 1986
Understanding the role of grafted polystyrene chain conformation in assembly of magnetic nanoparticles journal October 2014
Small-angle scattering by fractal systems journal December 1988
Polymers at an interface; a simplified view journal July 1987
Nanostructures and Dynamics of Macromolecules Bound to Attractive Filler Surfaces journal July 2015
Collective dynamics of tethered chains: Breathing modes journal August 1993
Dynamics of deuterated polystyrene-protonated butadiene diblock copolymer micelles by neutron spin echo journal April 2005
Neutron Spin Echo in Polymer Systems book January 2005
Crowded, Confined, and Frustrated: Dynamics of Molecules Tethered to Nanoparticles journal December 2012
Dynamic-light-scattering study of glasses of hard colloidal spheres journal January 1993
Confined Polymer Dynamics on Clay Platelets journal November 2010
Screening of hydrodynamic interactions in dense polymer solutions: a phenomenological theory and neutron-scattering investigations journal December 1984
Influence of the Bound Polymer Layer on Nanoparticle Diffusion in Polymer Melts journal September 2016
Nanoscale Motion of Soft Nanoparticles in Unentangled and Entangled Polymer Matrices journal September 2016
Star shaped polymers : a model for the conformation and its concentration dependence journal January 1982
Optical Properties of Polymer-Based Photonic Nanocomposite Materials journal September 2003
Multifunctional Nanocomposites with Reduced Viscosity journal December 2007
Multifunctional Polymeric Micelles as Cancer-Targeted, MRI-Ultrasensitive Drug Delivery Systems journal November 2006
Stimuli-responsive nanocarriers for drug delivery journal October 2013
Implications of macromolecular crowding for protein assembly journal February 2000
Molecular Chaperones in the Cytosol: from Nascent Chain to Folded Protein journal March 2002

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Conformational change and suppression of the Θ -temperature for solutions of polymer-grafted nanoparticles journal January 2018
Grafting-Induced Structural Ordering of Lactide Chains journal December 2019

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