Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, College of Chemical Engineering , Nanjing Forestry University , Nanjing 210037 , Jiangsu Province , China.
Jiangsu Co-Innovation Centre of Efficient Processing and Utilization of Forest Resources , Nanjing 210037 , Jiangsu Province , China.
J Agric Food Chem. 2019 Jan 16;67(2):637-643. doi: 10.1021/acs.jafc.8b05161. Epub 2019 Jan 8.
The absorbent materials synthesized from biosources with low cost and high selectivity for oils and organic solvents have attracted increasing attention in the field of oil spillage and discharge of organic chemicals. We developed a convenient surface-grafting method to prepare efficient and recyclable biobased aerogels from epoxidized soybean oil (ESO)-modified cellulose at room temperature. The porous network-like structure of the cellulose aerogel was still fully retained after undergoing hydrophobic modification with ESO. Moreover, the modified aerogels possessed excellent hydrophobicity with a water contact angle of 132.6°. Moreover, the absorbent ability of the hydrophobic cellulose aerogels was systematically assessed. The results showed that modified aerogels could retain more than 90% absorption capacity even after 30 absorption-desorption cycles, indicating that the ESO-grafted cellulose aerogels have practical applications in the oil-water separation from industrial wastewater and oil-leakage removal.
从低成本和高选择性的生物源合成的吸收材料，用于油和有机溶剂，在溢油和排放有机化学品领域引起了越来越多的关注。我们开发了一种方便的表面接枝方法，在室温下从环氧大豆油（ESO）改性纤维素制备高效和可回收的生物基气凝胶。纤维素气凝胶的多孔网络状结构在经过 ESO 疏水改性后仍得以完全保留。此外，改性气凝胶具有优异的疏水性，水接触角为 132.6°。此外，还系统地评估了疏水性纤维素气凝胶的吸收能力。结果表明，即使经过 30 次吸收-解吸循环，改性气凝胶仍能保留超过 90%的吸收能力，这表明 ESO 接枝纤维素气凝胶在工业废水的油水分离和漏油清除方面具有实际应用。
