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Strategy for Better Ordering in Diblock Copolymer Based Nanocomposites
Author(s) -
Lo ChiehTsung,
Lee Byeongdu,
Rago Nancy L. Dietz,
Winans Randall E.,
Thiyagarajan P.
Publication year - 2007
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200700412
Subject(s) - copolymer , materials science , nanocomposite , nanoparticle , swelling , conformational entropy , swell , domain (mathematical analysis) , composite material , polymer , polymer chemistry , nanotechnology , molecule , thermodynamics , mathematics , chemistry , physics , organic chemistry , mathematical analysis
A simple approach to improve the structural ordering in block copolymer/nanoparticle nanocomposites is presented. It is to blend a small molecular weight homopolymer with the composites, which can uniformly swell the preferred domain where the nanoparticles locate and increase the conformational entropy of the domain. Consequently, the interfaces between the block copolymer domains become smooth that improves the long range order in the nanocomposites. Furthermore, the uniform swelling of the preferred domain by the homopolymer will allow higher loading of nanoparticles without adversely affecting the long range order.