Fabrication of robust superhydrophobic filter paper for oil/water separation based on the combined octadecanoyl chain bonding and polymer grafting via surface-initiated ATRP
Fabrication of robust superhydrophobic filter paper for oil/water separation based on the combined octadecanoyl chain bonding and polymer grafting via surface-initiated ATRP
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DOI：
10.1007/s10570-019-02810-5
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发表时间：
2019-11
期刊：
影响因子：
5.7
通讯作者：
Kangmin Zhang;Miaomiao Wang;Mingyuan Wu;Q. Wu;Jiuyi Liu;Jianjun Yang;Jianan Zhang
中科院分区：
文献类型：
--
作者：
Kangmin Zhang;Miaomiao Wang;Mingyuan Wu;Q. Wu;Jiuyi Liu;Jianjun Yang;Jianan Zhang
油水的有效分离一直是一个长期的挑战。本文介绍了一种无需固体颗粒修饰的超疏水和超亲油滤纸的制备方法。通过硬脂酰氯和α-溴异丁基溴（BiBB）的同时酯化反应，将滤纸表面的十八烷基和α-溴异丁基化学键合得到C18-FP-g-Br，然后采用表面引发原子转移自由基聚合法制备了超疏水聚苯乙烯-共丙烯腈（SAN）接枝滤纸（C18-FP-g-SAN）。C18-FP-g-SAN的水接触角为153°，经过10种典型油水分离工艺后，由于十八烷链和接枝SAN的协同作用，分离效率超过98.5%。C18-FP-g-SAN经过10次循环使用和强酸或强碱溶液处理后，仍保持较高的分离效率。C18-FP-g-SAN优异的可重复使用性和化学稳定性为其在连续油水分离和溢油清理方面的实际应用提供了前景。图形抽象
AbstractEffective separation of oil and water has always been a long-term challenge. Here we introduce a facile and fluorine-free method to fabricate superhydrophobic and superoleophilic filter paper without the decoration of solid particles for robust oil/water separation. After chemically bonding octadecanoyl and α-bromoisobutyryl groups on the surface of filter paper through simultaneous esterification with stearoyl chloride and α-bromoisobutyryl bromide (BiBB) to obtain C18-FP-g-Br, superhydrophobic poly(styrene-co-acrylonitrile) (SAN) grafted filter paper (C18-FP-g-SAN) was fabricated via surface-initiated atom transfer radical polymerization. The obtained C18-FP-g-SAN showed a water contact angle of 153° and achieved a separation efficiency exceeding 98.5% after ten different typical oil/water separation processes due to the synergistically combined contributions of bonded octadecanoyl chain and grafted SAN. C18-FP-g-SAN remained high separation efficiency after 10 cycles of use and treatment with strong acidic or basic solution. The excellent reusability and chemical stability of C18-FP-g-SAN promise its practical applications of continuous oil/water separation and oil spillage cleanup.Graphic abstract