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Selective distribution of interacting magnetic nanoparticles into block copolymer domains based on the facile inversion of micelles

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Authors
Char, Kookheon; Park, Moon Jeong
Issue Date
2009-04-18
Publisher
Elsevier
Citation
Reactive & Functional Polymers 69 (2009) 546
Keywords
MagneticNanoparticle (s)Block copolymer (s)Micelle (s)
Abstract
We demonstrate a simple methodology to incorporate interacting magnetic nanoparticles (mNPs) into cylinder forming block copolymer templates. Poly(styrene-block-isoprene) (PS-b-PI) with PI cylinders and poly(styrene-block-4vinylpyridine) (PS-b-P4VP) with PS cylinders were used as the block copolymer templates and γ-Fe2O3 NPs coated with oleic acids were pre-synthesized for the interacting mNPs. Regardless of the template block copolymers, the selective location of mNPs and the size of mNP aggregates are clearly altered by changing casting solvents. When good solvents for both blocks were used as casting solvents, mNPs are readily aggregated during the solvent evaporation. In contrast, under selective casting solvents for the minor blocks, the mNPs were selectively trapped into the cylinder domains through the facile inversion of micelles during solvent evaporation. The interplay between mNPs and block copolymers was also tested with different molecular weights of block copolymers.
ISSN
1381-5148
Language
English
URI
http://hdl.handle.net/10371/5653
DOI
https://doi.org/10.1016/j.reactfunctpolym.2009.04.012

https://doi.org/10.1016/j.reactfunctpolym.2009.04.012
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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