Preparation of Composite Hydrogels with Silica Nanoparticles by Photoinitiated Polymerization Reaction

Authors : Nurcan KARACA

Pages : 198-207

Doi:10.35414/akufemubid.1148574

View : 22 | Download : 8

Publication Date : 2023-03-01

Article Type : Research Paper

Abstract :In this study, insert ignore into journalissuearticles values(3-mercaptopropyl); trimethoxysilane insert ignore into journalissuearticles values(MPTMS); modified silica nanoparticles insert ignore into journalissuearticles values(SiO2-MPTMS); were successfully prepared. The average size of SiO2-MPTMS nanoparticles was measured by Dynamic Light Scattering insert ignore into journalissuearticles values(DLS); as 341 nm in ethanol, while Scanning Transmission Electron Microscopy insert ignore into journalissuearticles values(STEM); analyzes confirmed that the nanoparticles were nano-sized and revealed that their shapes were spherical. Then, 3D nanocomposite hydrogels were prepared by incorporating SiO2-MPTMS nanoparticles in various ratios insert ignore into journalissuearticles values(0.25, 0.50, 0.75 and 1.0 wt %); into an acrylate resin consisting of N-isopropyl acrylamide insert ignore into journalissuearticles values(NIPAM); and polyethylene glychol diacrylate insert ignore into journalissuearticles values(PEGDA; as a crosslinker); by the photoinitiated polymerization reaction with Dimethoxy-2-phenylacetophenone insert ignore into journalissuearticles values(DMPA; as a photoinitiator);. By Thermal Gravimetric Analyzer insert ignore into journalissuearticles values(TGA); measurements, it was determined that the nanocomposite hydrogels maintained their thermal stability up to 330 0C and the thermal degradation steps were close to each other. Scanning Electron Microscopy insert ignore into journalissuearticles values(SEM); study showed that the neat and nanocomposite hydrogels’ morphological structures were in the porous and smooth scaffold, and also that the SiO2-MPTMS nanoparticles insert ignore into journalissuearticles values(0.50 wt %); were homogeneously distributed in the network structures of hydrogels, localized in the bonds.
Keywords : kompozit hidrojeller, silika nanopartiküller, 3 merkaptopropil trimetoksisilan, N izopropilakrilamit, polietilen glikol diakrilat