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Preparation of antibacterial PDMAEMA‐functionalized multiwalled carbon nanotube via atom transfer radical polymerization
Author(s) -
Joo Young Tae,
Jung Kwang Ho,
Kim Min Joo,
Kim Yangsoo
Publication year - 2012
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.37571
Subject(s) - atom transfer radical polymerization , materials science , methacrylate , thermogravimetric analysis , polymer chemistry , polymerization , radical polymerization , carbon nanotube , copolymer , fourier transform infrared spectroscopy , chemical engineering , polymer , composite material , engineering
Poly[2‐(dimethylamino)ethyl methacrylate] (PDMAEMA) was grafted onto the bromine‐functionalized multiwalled carbon nanotubes (MWNTs) by applying an atom transfer radical polymerization (ATRP). The PDMAEMA‐functionalized MWNT was characterized by Fourier transform infrared, transmission electron microscopy, Raman spectroscopy, thermal gravimetric analysis, and four‐probe resistivity meter. The wt % of PDMAEMA present in the PDMAEMA‐functionalized MWNT was estimated by applying the thermogram results for thermal gravimetric analysis. Variations of PDMAEMA content in the PDMAEMA‐functionalized MWNT were tried by changing the ATRP process conditions such as the type of ligand and copper complex, the amount of DMAEMA based on the weight of bromine‐functionalized MWNT, and the polymerization temperature. The phase behavior of PDMAEMA‐functionalized MWNT in water depending on temperature and pH value was analyzed, and the PDMAEMA‐functionalized MWNT showed the amphipathic nature. The PDMAEMA‐functionalized MWNT clearly showed an antibacterial effect against E. coli as well as S. aureus . The highest viability loss of E. coli achieved in this study was ∼ 42% with the PDMAEMA‐functionalized MWNT containing 53.9 wt % of PDMAEMA. The PDMAEMA‐functionalized MWNT showed sheet resistance less than ∼ 9.68 × 10 3 Ω/sq. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci., 2013