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Enhancement of dispersion of carbon nanotube and physical properties of poly(styrene‐ co ‐acrylonitrile)/multiwalled carbon nanotube nanocomposite via surface initiated ATRP
Author(s) -
Choi Won Seok,
Ryu Sung Hun
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.31921
Subject(s) - materials science , nanocomposite , carbon nanotube , atom transfer radical polymerization , dynamic mechanical analysis , nanotube , fourier transform infrared spectroscopy , dispersion (optics) , acrylonitrile , composite material , in situ polymerization , surface modification , polymer chemistry , chemical engineering , polymerization , copolymer , polymer , physics , optics , engineering
Dispersion behavior of multiwalled carbon nanotube (MWCNT), rheological and mechanical properties of various MWCNT/poly(styrene‐ co ‐acrylonitrile) (SAN) nanocomposites were investigated. MWCNT/SAN nanocomposites were prepared by three different methods; MWCNT/SAN melt blending, MWCNT/SAN in situ atom transfer radical polymerization (ATRP) and functionalized‐MWCNT/SAN in situ ATRP. Formation of SAN onto the surface of MWCNT and the molecular weight of grafted‐SAN were confirmed by fourier transform infrared spectra, 1 H‐NMR and 13 C‐NMR. Crossover frequency of storage and loss modulus from rheological measurement and dynamic mechanical analysis showed that functionalized MWCNT/SAN in situ ATRP nanocomposite showed more uniform dispersion of MWCNT. Improved mechanical and electrical properties were observed for functionalized MWCNT/SAN in situ ATRP nanocomposite. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010