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The principal focus of this experAdsorbents based on nanocrystalline cellulose (NCC) were synthesized by two steps selective functionalization at C-2, C-3 position of glucose moiety/structure resultin...g in an intermediate product, di-aldehyde nanocrystalline cellulose (DANC) and final product, di-carboxylate nanocrystalline cellulose (DCNC). The success of functionalization reaction was confirmed by FTIR and SEM. The removal of basic blue 41 was then investigated by varying process parameters such as initial solution pH, contact time and initial dye concentration. The adsorption kinetics were investigated using pseudo 1st and pseudo 2nd -order model; which fitted well to the later one. Meanwhile, adsorption isotherm study predicted monolayer adsorption mechanism following the Langmuir model with a calculated maximum adsorption capacity of 446.19 mg/L for DCNC, which was much higher compared to DANC and NCC. The reusability studies configured that DCNC can be reused at least 5 cycles without losing significant efficiency. These findings prefigure that DCNC is an excellent biodegradable adsorbent.iment was to investigate the dynamic friction properties of different fabric samples at dry and wet skin conditions for a fixed load. The experiment was done by a simple setup with fabric sliding mechanism over human skin for four separate fabric samples of two different categories. Friction forces between different fabrics and human skin were measured through the experimental procedure and afterwards friction coefficient was calculated using Capstan formula from the obtained value of force. It was observed that the friction coefficient of Garment fabrics is lower than that of Special fabrics in dry condition. Wet condition resulted in higher frictional effects than dry condition of the skin providing perfect matching of natural frictional characteristics of any surface. Besides, the wetness of skin, as well as wettability of fabrics, also have a significant influence on the friction coefficient.続きを見る
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