A novel approach for imparting multi-functional properties, i.e., anti-crease, self-cleaning, UV-protecting as well as anti-bacterial properties onto cotton fabric is described. The multi-functional finished cotton fabric was obtained by pretreatment with the reactant resin, as a crosslinker, along with citric acid or PEG-400, as an additive in presence of MgCl2·6H 2O as a catalyst followed by drying, subsequent loading of TiO 2-nanoparticles and finally curing. Factors affecting the extent of crosslinking as well as deposition and/or fixation of nano-structured titania cluster onto/into treated fabric samples are studied. The modified cotton samples showed an excellent improvement in their functional properties along with a high durability to wash. The possible mechanisms for deposition/fixation of TiO2-nanoparticles onto and/or within the fabric or the finish/fabric matrix as well as its positive impact on fabric resiliency, self-cleaning, UV-protecting, and anti-bacterial functionality are discussed. Surface morphology and surface elemental composition, especially Ti-content, on the loaded films were studied by SEM and EDS, respectively.
Bioactive glasses (BGs) have gained great attention owing to their versatile biological properties. Combining BG nanoparticles (BGNPs) with polymeric nanofibers produced nanocomposites of great performance in various biomedical applications especially in regenerative medicine. In this study, a novel nanocomposite nanofibrous system was developed and optimized from cellulose acetate (CA) electrospun nanofibers containing different concentrations of BGNPs. Morphology, IR and elemental analysis of the prepared electrospun nanofibers were determined using SEM, FT-IR and EDX respectively. Electrical conductivity and viscosity were also studied. Antibacterial properties were then investigated using agar well diffusion method. Moreover, biological wound healing capabilities for the prepared nanofiber dressing were assessed using in-vivo diabetic rat model with induced wounds. The fully characterized CA electrospun uniform nanofiber (100–200 nm) with incorporated BGNPs exhibited broad range of antimicrobial activity against gram negative and positive bacteria. The BGNP loaded CA nanofiber accelerated wound closure efficiently by the 10th day. The remaining wound areas for treated rats were 95.7 ± 1.8, 36.4 ± 3.2, 6.3 ± 1.5 and 0.8 ± 0.9 on 1st, 5th, 10th and 15th days respectively. Therefore, the newly prepared BGNP CA nanocomposite nanofiber could be used as a promising antibacterial and wound healing dressing for rapid and efficient recovery.
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