Westlake University, School of Engineering, Hangzhou, China.
Gomal Center of Biochemistry and Biotechnology, Gomal University, D. I. Khan, 29050, Pakistan.
Chemosphere. 2023 Apr;321:137999. doi: 10.1016/j.chemosphere.2023.137999. Epub 2023 Jan 29.
Green and efficient removal of polluted materials are essential for the sustainability of a clean and green environment. Nanomaterials, particularly cellulose nanocrystals (CNCs), are abundant in nature and can be extracted from various sources, including cotton, rice, wheat, and plants. CNCs are renewable biomass materials with a high concentration of polar functional groups. This study used succinic anhydride to modify the surface of native cellulose nanocrystals (NCNCs). Succinic anhydride has been frequently used in adhesives and sealant chemicals for a long time, and here, it is evaluated for dye removal performance. The morphology and modification of CNCs studied using FTIR, TGA & DTG, XRD, SEM, AFM, and TEM. The ability of modified cellulose nanocrystals (MCNCs) to adsorb cationic golden yellow dye and methylene blue dye was investigated. The MCNCs exhibited high adsorption affinity for the two different cationic dyes. The maximum adsorption efficiency of NCNCs and MCNCs towards the cationic dye was 0.009 and 0.156 wt%. The investigation for adhesive properties is based on the strength and toughness of MCNCs. MCNCs demonstrated improved tensile strength (2350 MPa) and modulus (13.9 MPa) using E-51 epoxy system and a curing agent compared to 3 wt% composites. This research lays the groundwork for environmentally friendly fabrication and consumption in the industrial sector.
绿色、高效去除污染物对于清洁、绿色环境的可持续性至关重要。纳米材料，特别是纤维素纳米晶体（CNCs），在自然界中含量丰富，可以从棉花、水稻、小麦和植物等各种来源中提取。CNCs 是可再生的生物质材料，具有高浓度的极性官能团。本研究使用琥珀酸酐对天然纤维素纳米晶体（NCNCs）进行表面改性。琥珀酸酐长期以来一直被用于粘合剂和密封剂化学物质中，在这里，它被评估用于染料去除性能。通过 FTIR、TGA & DTG、XRD、SEM、AFM 和 TEM 研究了 CNCs 的形态和改性。研究了改性纤维素纳米晶体（MCNCs）对阳离子金黄染料和亚甲蓝染料的吸附能力。MCNCs 对两种不同的阳离子染料表现出高吸附亲和力。NCNCs 和 MCNCs 对阳离子染料的最大吸附效率分别为 0.009 和 0.156wt%。对粘合性能的研究基于 MCNCs 的强度和韧性。与 3wt%复合材料相比，MCNCs 在使用 E-51 环氧树脂体系和固化剂时表现出更高的拉伸强度（2350MPa）和模量（13.9MPa）。这项研究为工业领域的环保制造和消费奠定了基础。
