Search academic texts

Information × Registration Number 0221U102353, 0118U006175 , R & D reports Title Development of intelligent sensory system with sensing elements based on hybrid conducting nanocomposites for the registration of environmentally harmful volatile compounds. Section 1. Development, manufacturing and optimization of new sensing materials on the basis of conducting hybrid nanocomposites. popup.stage_title Head Pud Oleksandr A., Доктор хімічних наук Registration Date 01-02-2021 Organization V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine popup.description2 The new percolation-type sensory nanocomposites based on polyaniline coated halloysite nanotubes, carbon nanotubes and their binary nanocomposites with polyaniline distributed in dielectric matrices of different nature (polyvinyl alcohol, polyvinylidene fluoride, polyvinyl chloride, polymethyl methacrylate) are developed. The selection of the polymer matrix and the nanoscale electrically conductive material, as well as their ratios have been carried out, in order to form the conductive percolation network of dispersed nanoparticles in the developed nanocomposites. The conductive percolation network should possess the ability to change its characteristics by sensory interaction with volatile organic compounds and ammonia. The optimal conditions for the formation and for the application of the developed nanocomposites on the chemoresistive sensor electrodes are found. The nanocomposites based on polymethyl methacrylate and polyaniline-coated carbon nanotubes in the ratio of 0.2% are shown to possess a high sensitivity to isopropanol. It has been established that nanocomposites based on polyvinylidene fluoride containing 0.03% of the naked carbon nanotubes or 0.5% of the polyaniline-coated nanotubes are characterized by the highest selectivity and sensitivity to volatile organic compounds. Product Description popup.authors Myronyuk Iryna Ye. Noskov Yuriy V. popup.nrat_date 2021-02-01 Close