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- W2012425573 abstract "A quaternized poly(dimethylaminoethyl methacrylate)-grafted poly(dimethylsiloxane) (PDMS) surface (PDMS-QPDMAEMA) was successfully prepared in this study via solution-phase oxidation reaction and surface-initiated atom transfer radical polymerization (SI-ATRP) using dimethylaminoethyl methacrylate (DMAEMA) as initial monomer. PDMS substrates were first oxidized in H(2)SO(4)/H(2)O(2) solution to transform the SiCH(3) groups on their surfaces into SiOH groups. Subsequently, a surface initiator for ATRP was immobilized onto the PDMS surface, and DMAEMA was then grafted onto the PDMS surface via copper-mediated ATRP. Finally, the tertiary amino groups of PolyDMAEMA (PDMAEMA) were quaternized by ethyl bromide to provide a cationic polymer brush-modified PDMS surface. Various characterization techniques, including contact angle measurements, attenuated total reflection infrared spectroscopy, and X-ray photoelectron spectroscopy, were used to ascertain the successful grafting of the quaternized PDMAEMA brush onto the PDMS surface. Furthermore, the wettability and stability of the PDMS-QPDMAEMA surface were examined by contact angle measurements. Antifouling properties were investigated via protein adsorption, as well as bacterial and cell adhesion studies. The results suggest that the PDMS-QPDMAEMA surface exhibited durable wettability and stability, as well as significant antifouling properties, compared with the native PDMS and PDMS-PDMAEMA surfaces. In addition, our results present possible uses for the PDMS-QPDMAEMA surface as adhesion barriers and antifouling or functional surfaces in PDMS microfluidics-based biomedical applications." @default.
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- W2012425573 date "2013-02-01" @default.
- W2012425573 modified "2023-09-29" @default.
- W2012425573 title "Antifouling properties of poly(dimethylsiloxane) surfaces modified with quaternized poly(dimethylaminoethyl methacrylate)" @default.
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- W2012425573 doi "https://doi.org/10.1016/j.colsurfb.2012.08.033" @default.
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