Miscibility and Nanoparticle Diffusion in Ionic Nanocomposites

Overview

Journal Polymers (Basel)

Publisher MDPI

Date 2019 Apr 10

PMID 30960935

Citations 7

Authors

Argyrios Karatrantos

Yao Koutsawa

Philippe Dubois

Nigel Clarke

Martin Kroger

Affiliations

Soon will be listed here.

Abstract

We investigate the effect of various spherical nanoparticles in a polymer matrix on dispersion, chain dimensions and entanglements for ionic nanocomposites at dilute and high nanoparticle loading by means of molecular dynamics simulations. The nanoparticle dispersion can be achieved in oligomer matrices due to the presence of electrostatic interactions. We show that the overall configuration of ionic oligomer chains, as characterized by their radii of gyration, can be perturbed at dilute nanoparticle loading by the presence of charged nanoparticles. In addition, the nanoparticle's diffusivity is reduced due to the electrostatic interactions, in comparison to conventional nanocomposites where the electrostatic interaction is absent. The charged nanoparticles are found to move by a hopping mechanism.

Citing Articles

Ionic poly(dimethylsiloxane)-silica nanocomposites: Dispersion and self-healing.

Mugemana C, Moghimikheirabadi A, Arl D, Addiego F, Schmidt D, Kroger M MRS Bull. 2023; 47(12):1185-1197.

PMID: 36846500 PMC: 9947054. DOI: 10.1557/s43577-022-00346-x.

From Ionic Nanoparticle Organic Hybrids to Ionic Nanocomposites: Structure, Dynamics, and Properties: A Review.

Karatrantos A, Mugemana C, Bouhala L, Clarke N, Kroger M Nanomaterials (Basel). 2023; 13(1).

PMID: 36615912 PMC: 9823933. DOI: 10.3390/nano13010002.

The Dispersion and Coagulation of Negatively Charged CaNbO Perovskite Nanosheets in Sodium Alginate Dispersion.

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PMID: 35957020 PMC: 9370453. DOI: 10.3390/nano12152591.

Structure and Diffusion of Ionic PDMS Melts.

Karatrantos A, Khantaveramongkol J, Kroger M Polymers (Basel). 2022; 14(15).

PMID: 35956584 PMC: 9370667. DOI: 10.3390/polym14153070.

Ionic Polymer Nanocomposites Subjected to Uniaxial Extension: A Nonequilibrium Molecular Dynamics Study.

Moghimikheirabadi A, Karatrantos A, Kroger M Polymers (Basel). 2021; 13(22).

PMID: 34833305 PMC: 8621629. DOI: 10.3390/polym13224001.

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