论文部分内容阅读
采用纤维素为原料,制备了超疏水磁性纤维素粒子。竹溶解浆用氢氧化钠/尿素/水体系溶解,在水中再生形成纤维素粒子。再采用原位沉淀法制得磁性纤维素粒子,正十八烷基三甲基硅烷修饰后得到超疏水磁性纤维素粒子。用扫描电镜(SEM)、傅里叶红外光谱仪(FT-IR)、热失重分析仪(TG)和液滴形状分析仪(CA)对改性纤维素粒子的形貌、化学结构、热稳定性和超疏水性进行了分析。改性纤维素粒子表现出超疏水性能和磁响应性能,水接触角达到151.2°。改性纤维素粒子可以包裹水滴和甘油形成液体弹珠。
Using cellulose as raw material, superhydrophobic magnetic cellulose particles were prepared. The bamboo pulp dissolves in sodium hydroxide / urea / water system and regenerates in water to form cellulose granules. Then using in situ precipitation method of magnetic cellulose particles, n-octadecyl trimethyl silane modified to obtain super-hydrophobic magnetic cellulose particles. The morphology, chemical structure and thermal stability of the modified cellulose particles were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TG) and droplet shape analyzer And superhydrophobicity were analyzed. Modified cellulose particles showed superhydrophobic properties and magnetic response, water contact angle of 151.2 °. Modified cellulose particles can wrap water droplets and glycerol to form liquid marbles.