Abstract
A multi-responsive microgel having response to pH, temperature, and salt concentration was successfully prepared using a water-soluble monomer. Microgels were readily prepared from 2-(N-morpholino)ethyl methacrylate (MEMA) via emulsion polymerization using glycidyl methacrylate as a comonomer cross-linker. The morpholino groups of MEMA residues of microgels were able to give complexation with metal containing anions such as AuCl4 − in acidic conditions. The reduction of aurate ions with sodium borohydride led to immobilized-gold nanoparticles (AuNP) in the microgel system. Average particle diameters of AuNPs were determined to be 10 ± 2 nm. The resulting AuNP-microgel system was examined as a nanoreactor for catalyst system and determined to be very effective in the reduction of 4-nitrophenol model reaction in aqueous media. AuNPs-microgel composite system had antibacterial properties against several Gram-positive and Gram-negative bacteria similar to amoxicillin. This P(MEMA-co-GMA) microgel is also very useful for different applications such as a host for metal nanoparticle production, a drug carrier or drug delivery system.
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Acknowledgements
The Scientific and Technological Research Council of Turkey is thanked for financial support (GR/111 T972). This work was also financially supported by the Scientific Research Project Supporting Commission of Eskisehir Osmangazi University (GR/201319C103).
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Ulker, D., Tuncer, C., Sezgin, S.B. et al. An antibacterial composite system based on multi-responsive microgels hosting monodisperse gold nanoparticles. J Polym Res 24, 169 (2017). https://doi.org/10.1007/s10965-017-1336-y
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DOI: https://doi.org/10.1007/s10965-017-1336-y