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。
This paper presents the preparation of superhydrophobic magnetic cellulose-based particles by using the cellulose as the raw material. The bamboo pulp is dissolved by the NaOH/urea aqueous solution, and the cellulose particles are regenerated in the water. The superhydrophobic magnetic cellulose particles are obtained by modifying the magnetic cellulose particles with the noctadecyltrimethoxysilane(ODTMS). The morphology, the chemical structure and the thermal stability of the modified cellulose particles are analyzed by the scanning electron microscopy(SEM), the Fourier transform infrared spectroscopy(FT-IR) and the thermogravimetry(TG), respectively. The modified-cellulose particles are superhydrophobic and magnetically responsive. Its water contact angle is 151.2°. The modified-cellulose particles can encapsulate the water and the glycerol droplets to form stable liquid marbles.
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