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Title: Binary mixed homopolymer brushes grafted on nanorod particles: A self-consistent field theory study

We employ the self-consistent field theory to study phase structures of brush-rod systems composed of two chemically distinct linear homopolymers. The polymer chains are uniformly grafted on the surface of a nanorod particle of finite length and comparable radius to the polymer radius of gyration. A “masking” technique treating the cylindrical boundary is introduced to solve the modified diffusion equations with an efficient and high-order accurate pseudospectral method involving fast Fourier transform on an orthorhombic cell. A rich variety of structures for the phase separated brushes is predicted. Phase diagrams involving a series of system parameters, such as the aspect ratio of the nanorod, the grafting density, and the chain length are constructed. The results indicate that the phase structure of the mixed brush-rod system can be tailored by varying the grafted chain length and/or the aspect ratio of the rod to benefit the fabrication of polymeric nanocomposites.
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Department of Macromolecular Science, The State Key Laboratory of Molecular Engineering of Polymers, Key Laboratory of Computational Physical Sciences, Fudan University, Shanghai 200433 (China)
  2. Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202 (United States)
  3. Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996 (United States)
Publication Date:
OSTI Identifier:
22251316
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 139; Journal Issue: 21; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ASPECT RATIO; COMPOSITE MATERIALS; DENSITY; DIFFUSION EQUATIONS; FOURIER TRANSFORMATION; GRAFTS; NANOSTRUCTURES; ORTHORHOMBIC LATTICES; PARTICLES; POLYMERS; SELF-CONSISTENT FIELD; SURFACES