Mechanochemical synthesis and composite properties polyanіline/cellulosе

The mechanochemical (solid phase) method synthesized polyaniline/cellulose composites and investigated some of their physicochemical properties, namely, phase state, structure, interphase interaction and electrical conductivity. The ratio of reagents (g: g) to aniline sulphate: ammonium peroxodisulfate was 1.310 : 1.766, and the ratio of aniline sulfate: cellulose (g: g) was 1.310 : 1.000, or 1.310 : 0.500, or 1.310 : 0.250. According to the results of X-ray and FT-IR spectral analyzes, it was found that the synthesized samples correspond to the characteristics of composite materials. It is established that the structure of composites is amorphous. The presence of cellulose in composites has been confirmed by X-ray and FT-IR spectral analyzes. The analysis of the results of the infrared spectral analysis confirms the high electrical conductivity of samples of composites. It is shown that between components of composites there is a phase interaction through the formation of hydrogen bonds due to the interaction between -NH or -N =  groups and surface functional groups of cellulose fibers. All synthesized samples have electrical conductivity. The highest value of the specific conductivity has a pure PAn, and with increasing content of the Goal in composites, a slight decrease in electrical conductivity is observed due to the non-conductivity of cellulose. The conductivity of the composites has increased significantly in relation to pure cellulose and is 0.91× 10 -2 , 1.86×10 -2 and 2.15×10 -2 S cm -1 , and the electrical conductivity of the polyaniline is 2.77×10 -2 cm -1 . Relatively high values of specific conductivity of samples of composites can be attributed to the additional crushing of cellulose microfiber with mechanochemical synthesis to nanosized values. From the results it is seen that the synthesized specimens are composites with certain structural and electrical conductive properties. Keywords: polyaniline, cellulose, solid phase synthesis, composites, structures, properties.