Organic/inorganic hybrid nanocolloids of water dispersible polyurethanes with antibacterial activity

Enhanced Thermo‐Mechanical Stiffness, Thermal Stability, and Fire Retardant Performance of Surface‐Modified 2D MoS2Nanosheet‐Reinforced Polyurethane Composites

“…The formation of PU was confirmed mainly by the disappearance of isocyanate peak at 2270 cm −1 and the appearance of urethane NH peak at around 3327 cm −1 . All characteristic peaks of PUs were observed, and the main functional groups of PUs are urethane NH and urethane carbonyl stretching peaks . The peak at 1028 cm −1 corresponds to O‐Si‐O, which merged with the characteristic peaks of PU polymer.…”

“…The TGA results are presented in Figure , and the relevant data calculated from TGA thermograms are summarized in Table 1 . The thermal stability mainly depends on the structure of the monomeric compounds used in PU synthesis, and the interactions between the polymer and nanoparticles . In various atmospheric conditions, all PU composites underwent decomposition in different paths, and all the TGA plots displayed typical two‐stage decomposition in nitrogen atmosphere and three‐stage decomposition in air atmosphere.…”

“…The stoichiometric ratio NCO/‐OH of 1 was maintained in all cases. The reaction was allowed to continue until “NCO” was completely converted to urethane, as monitored by IR spectra until the complete disappearance of NCO peak at 2270 cm −1 . Into the reaction mixer, M‐MoS 2 at a calculated weight percentage with respect to the polyol was added, and the reaction continued for another 3 h. Finally, the obtained homogeneous and viscous solution was poured into a Teflon mold and kept in an oven overnight (14 h) at 80 °C, and then kept in a vacuum oven for 1 day (24 h) at 60 °C for complete drying.…”

Fabrication of hybrid polystyrene–titanium dioxide with enhanced dye degradation and antimicrobial properties: investigation of the effect of triethylene glycol dimethacrylate on photocatalytic activity

“…Polymer–inorganic nanoparticle hybrid materials tend to show better chemical, physical and mechanical properties than their components. Thus, their attractive applications in polymer hybrid materials are more and more interesting to scientists in various fields 1–6 . Inorganic nanoparticles with interesting and useful properties are uniquely associated with polymeric materials.…”

Antibacterial Activity and Mechanism of ZnO/Cu2+-Chitosan/Montmorillonite

“…While, composite antibacterial materials [8][9][10] always exhibit superior comprehensive performance than a single component and broaden the application range of antibacterial materials. Studies had reported that when organic antibacterial agents were loaded on inorganic silicate clay, the hydroxyl and charge characteristics on surface of silicate clay could help control the release of organic antibacterial agents and improve antibacterial stability of organic antibacterial agents, the morphology and pore structure characteristics of salt clay could load organic antibacterial agents into it and effectively reduced the biotoxic side effects of organic antibacterial agents [11] .…”