【摘要】 为了制备一种超疏水亲油材料基于纤维素可生物降解的环保特性，采用废棉制备了超疏水亲油的甲基三氯硅烷（MTCS）/mSiO₂/纳米微晶纤维素（NCC）气凝胶。首先将废棉打碎酸解成NCC，再用KH560对SiO₂进行改性，然后以NCC和mSiO₂为原料，制备mSiO₂/NCC复合气凝胶，最后以MTCS为疏水改性剂对m SiO₂/NCC气凝胶改性，制备成超疏水亲油的MTCS/mSiO₂/NCC气凝胶，并使用红外光谱仪、X射线衍射仪、扫描电子显微镜、接触角测试仪，对超疏水亲油材料的形貌、结构及表面浸润进行表征。结果表明：制备得到了一种三维多孔、结果稳定的超疏水亲油MTCS/m SiO₂/NCC气凝胶，静态水接触角最高达150.97°，对食用油、机油和石蜡油的最大吸油倍率分别为60.00 g/g、58.15 g/g和43.27 g/g，能够快速分离油水混合物，具备良好的超疏水亲油性能。更多还原

【Abstract】 In order to prepare kind of superhydrophobic oil-philic material, based on the biodegradable environmental characteristics of cellulose, MTCS/m SiO₂/NCC aerogel was prepared using waste cotton. Firstly, the waste cotton was broken into nanocrystalline cellulose（NCC） by acid hydrolysis, and then SiO₂was modified with KH560. Then,NCC and m SiO₂ were used as raw materials to prepare m SiO₂/NCC composite aerogel. Finally,m SiO₂/NCC aerogel was modified with methyl trichlorosilane（MTCS） as hydrophobic modifier. MTCS/m SiO₂/NCC aerogels were prepared. The morphology, structure and surface infiltration of superhydrophobic and oil-philic materials were characterized by infrared spectrometer, X-ray diffractometer, scanning electron microscope and contact angle tester.The results show that a three-dimensional porous and stable super-hydrophobic oil-philic MTCS/m SiO₂/NCC aerogel is obtained, with a maximum static water contact angle of 150.97°, and a maximum oil absorption rate of60.00 g/g, 58.15 g/g and 43.27 g/g for cooking oil,oil and paraffin oil, respectively, which can quickly separate oil-water mixture. It has good super hydrophobic and oil-philic properties.更多还原