| 초록 |
A universal method to modify polystyrene beads (PSBs) using catechol moiety 2-chloro-3', 4’-dihydroxyacetophenone (CCDP) conjugated to poly(ethylene glycol)-g-poly(dimethylaminoethyl methacrylate) [PEG-g-PDMAEMA, QC-PEG] is proposed. CCDP of QC-PEG is adhered onto PSBs under alkali condition where PVP was added as stabilizer. The modified PSBs (MPSBs) was functionalized by depositing silver nanoparticles (SNPs) as antimicrobial, iron oxide nanoparticle (IONPs) as magnet and TiO2 as photocatalyst. Modification and functionalization of the MPSBs were rectified by scanning electron microscope (SEM), X-ray photoelectron microscope (XPS) and UV-vis spectrometer. The functionalized MPSBs show outstanding antimicrobial activities against gram-positive and negative bacteria for containing SNPs while photocatalytic behaviour was found against methylene blue after depositing TiO2. |
