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Title: Clustering effects in ionic polymers: Molecular dynamics simulations

Journal Article · · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
 [1];  [1];  [2]
  1. Clemson Univ., Clemson, SC (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Ionic clusters control the structure, dynamics, and transport in soft matter. Incorporating a small fraction of ionizable groups in polymers substantially reduces the mobility of the macromolecules in melts. Furthermore, these ionic groups often associate into random clusters in melts, where the distribution and morphology of the clusters impact the transport in these materials. Here, using molecular dynamic simulations we demonstrate a clear correlation between cluster size and morphology with the polymer mobility in melts of sulfonated polystyrene. We show that in low dielectric media ladderlike clusters that are lower in energy compared with spherical assemblies are formed. Reducing the electrostatic interactions by enhancing the dielectric constant leads to morphological transformation from ladderlike clusters to globular assemblies. Finally, decrease in electrostatic interaction significantly enhances the mobility of the polymer.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000; SC007908; AC02-05CH11231
OSTI ID:
1235304
Alternate ID(s):
OSTI ID: 1212122
Report Number(s):
SAND-2015-6967J; 599050
Journal Information:
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, Vol. 92, Issue 02; ISSN 1539-3755
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

References (38)

Polymer Electrolytes journal July 2013
Electrostatic control of block copolymer morphology journal June 2014
Ionomer dynamics and the sticky Rouse model journal September 2013
Microphase separation in sulfonated polystyrene ionomers journal August 1982
Direct observation of ionic aggregates in sulphonated polystyrene ionomers journal July 1989
Reconciling STEM and X-ray Scattering Data To Determine the Nanoscale Ionic Aggregate Morphology in Sulfonated Polystyrene Ionomers journal August 2008
Nonlinear Rheology of Lightly Sulfonated Polystyrene Ionomers journal March 2013
Rheological behavior of oligomeric ionomers journal January 2009
Viscoelastic behavior of lightly sulfonated polystyrene ionomers journal September 1991
Viscoelastic Behavior of Very Lightly Sulfonated Polystyrene Ionomers journal May 2007
Viscoelastic properties of sulfonated styrene ionomers journal October 1981
Clustering of Ions in Organic Polymers. A Theoretical Approach journal March 1970
A new multiplet-cluster model for the morphology of random ionomers journal September 1990
Matrix Method for Determining the Dimensions of Branched Random-Flight Chains journal July 1968
Model for the clustering of multiplets in ionomers journal March 1985
Electrostatic contributions to the free energy of clustering of an ionomer journal July 1985
Microstructure of ionomers: interpretation of small-angle x-ray scattering data journal December 1983
Spherical and vesicular ionic aggregates in Zn-neutralized sulfonated polystyrene ionomers journal January 2001
Structure and Dynamics of Zinc-Neutralized Sulfonated Polystyrene Ionomers journal April 2011
Molecular dynamics simulation of chain collapse of random ionomers in a poor solvent journal June 1997
Solvation Behavior of Short-Chain Polystyrene Sulfonate in Aqueous Electrolyte Solutions:  A Molecular Dynamics Study journal December 2005
Specifics of solvation of sulfonated polyelectrolytes in water, dimethylmethylphosphonate, and their mixture: A molecular simulation study journal April 2008
Detailed Molecular Dynamics Simulations of a Model NaPSS in Water journal July 2010
Atomistic Simulation Study of Linear Alkylbenzene Sulfonates at the Water/Air Interface journal August 2010
Effect of Polymer Architecture and Ionic Aggregation on the Scattering Peak in Model Ionomers journal March 2011
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Optimized intermolecular potential functions for liquid hydrocarbons journal October 1984
Development and Testing of the OPLS All-Atom Force Field on Conformational Energetics and Properties of Organic Liquids journal January 1996
Sulfate Anion in Water: Model Structural, Thermodynamic, and Dynamic Properties journal June 1994
Energy component analysis for dilute aqueous solutions of lithium(1+), sodium(1+), fluoride(1-), and chloride(1-) ions journal February 1984
Development and application of a particle-particle particle-mesh Ewald method for dispersion interactions journal November 2012
Reversible multiple time scale molecular dynamics journal August 1992
Atomistic Simulations Predict a Surprising Variety of Morphologies in Precise Ionomers journal February 2013
Head-head interactions in zwitterionic associating polymers journal November 1988
Polymers with Strongly Interacting Groups: Theory for Nonspherical Multiplets journal October 1995
Aggregation processes in self-associating polymer systems: Computer simulation study of micelles in the superstrong segregation regime journal July 1996
Aggregation processes in self-associating polymer systems: A comparative analysis of theoretical and computer simulation data for micelles in the superstrong segregation regime journal July 1996
Temperature dependence of self diffusion of polystyrene and polyethylene in the melt an interpretation in terms of the free volume theory journal January 1984

Cited By (1)

Temperature response of soft ionizable polymer nanoparticles journal August 2018