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Title: Effect of homopolymer matrix on diblock copolymer grafted nanoparticle conformation and potential of mean force: A molecular simulation study

Abstract

ABSTRACT We study the effect of homopolymer A or B matrix on the conformations and effective interactions of AB diblock copolymer grafted particles using coarse‐grained molecular dynamics simulations. In an A homopolymer matrix we observe patchy conformations within the AB diblock copolymer grafted layer, where the number of B patches is controlled by the A‐A attractive interaction strength. In a B homopolymer matrix the grafted particle takes on a core‐corona conformation, where the inner A block aggregates near the particle surface and the outer B block forms a corona that interacts with the B matrix. The potential of mean force (PMF) between two particles in an A homopolymer matrix has a long‐ranged attractive well with a minima at intermediate distances corresponding to the location of the outer B block patches. The PMF between two particles in a B homopolymer matrix has an attractive well at short interparticle distances corresponding to the size of the inner A block. We isolate the contribution of the homopolymer matrix on the PMF between the two diblock copolymer grafted particles, by deducting the PMF in the absence of a matrix, assuming the contributions of the grafted particle and matrix to the PMF to be additive.more » © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2015 , 53 , 76–88« less

Authors:
 [1];  [2]
  1. Department of Chemistry and Biochemistry University of Colorado Boulder Colorado 80309, Department of Chemical and Biomolecular Engineering University of Delaware Newark Delaware 19716
  2. Department of Chemical and Biomolecular Engineering University of Delaware Newark Delaware 19716, Department of Materials Science and Engineering University of Delaware Newark Delaware 19716
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1401117
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Journal of Polymer Science. Part B, Polymer Physics
Additional Journal Information:
Journal Name: Journal of Polymer Science. Part B, Polymer Physics Journal Volume: 53 Journal Issue: 1; Journal ID: ISSN 0887-6266
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
United States
Language:
English

Citation Formats

Estridge, Carla E., and Jayaraman, Arthi. Effect of homopolymer matrix on diblock copolymer grafted nanoparticle conformation and potential of mean force: A molecular simulation study. United States: N. p., 2014. Web. doi:10.1002/polb.23637.
Estridge, Carla E., & Jayaraman, Arthi. Effect of homopolymer matrix on diblock copolymer grafted nanoparticle conformation and potential of mean force: A molecular simulation study. United States. https://doi.org/10.1002/polb.23637
Estridge, Carla E., and Jayaraman, Arthi. Wed . "Effect of homopolymer matrix on diblock copolymer grafted nanoparticle conformation and potential of mean force: A molecular simulation study". United States. https://doi.org/10.1002/polb.23637.
@article{osti_1401117,
title = {Effect of homopolymer matrix on diblock copolymer grafted nanoparticle conformation and potential of mean force: A molecular simulation study},
author = {Estridge, Carla E. and Jayaraman, Arthi},
abstractNote = {ABSTRACT We study the effect of homopolymer A or B matrix on the conformations and effective interactions of AB diblock copolymer grafted particles using coarse‐grained molecular dynamics simulations. In an A homopolymer matrix we observe patchy conformations within the AB diblock copolymer grafted layer, where the number of B patches is controlled by the A‐A attractive interaction strength. In a B homopolymer matrix the grafted particle takes on a core‐corona conformation, where the inner A block aggregates near the particle surface and the outer B block forms a corona that interacts with the B matrix. The potential of mean force (PMF) between two particles in an A homopolymer matrix has a long‐ranged attractive well with a minima at intermediate distances corresponding to the location of the outer B block patches. The PMF between two particles in a B homopolymer matrix has an attractive well at short interparticle distances corresponding to the size of the inner A block. We isolate the contribution of the homopolymer matrix on the PMF between the two diblock copolymer grafted particles, by deducting the PMF in the absence of a matrix, assuming the contributions of the grafted particle and matrix to the PMF to be additive. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2015 , 53 , 76–88},
doi = {10.1002/polb.23637},
journal = {Journal of Polymer Science. Part B, Polymer Physics},
number = 1,
volume = 53,
place = {United States},
year = {Wed Nov 19 00:00:00 EST 2014},
month = {Wed Nov 19 00:00:00 EST 2014}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1002/polb.23637

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Cited by: 15 works
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