以密胺酯海绵为基体,通过端羟基聚二甲基硅氧烷(H-PDMS)与正硅酸乙酯(TEOS)反应生成低表面能聚硅氧烷(PDMS),利用疏水气相纳米SiO2构造粗糙度,将海绵在PDMS/SiO2复合溶液中充分浸润后取出,干燥固化后制得超疏水亲油海绵。通过红外光谱、扫描电镜、接触角测试仪等手段对改性海绵的官能团、微观结构和疏水性进行表征和测试。结果表明:海绵疏水性能随着复合溶液中SiO2粒子含量增加而逐渐增加,当SiO2与PDMS质量比为0.3时,海绵的水接触角大于150°,具有超疏水性,可以用于油水混合物的分离,并具有良好的循环使用性能。
With the melamine sponge as the substrate,the low surface energy material (PDMS) was generated by the reaction of end-hydroxy polydimethylsiloxane (H-PDMS) and ethyl orthosilicate (TEOS),and the hydrophobic gas-phase nano-SiO2 was used to construct the roughness,and the sponge was immersed in the PDMS solution containing SiO2 and removed after full wetting,and the superhydrophobic lipophilic sponge was made after drying and curing.The functional groups,microstructure and hydrophobicity of the modified sponges were characterized and tested by infrared spectroscopy,scanning electron microscopy and contact angle tester.Results shown that the hydrophobic performance of the sponge gradually increased with the increase of SiO2 particle content in the composite solution,and when the particle content increased to 0.3,the water contact angle of the sponge with superhydrophobicity reached 151°,which can be used for the separation of oil-water mixtures and had good recycling performance.
[1] 章耕耘,马丽,李吉鹏,等.海洋溢油生态损害评估模型研究进展[J].海洋环境科学,2014,33(1):161-168.
[2] Zhou X,Zhang Z,Xu X,et al.Facile fabrication of superhydrophobic sponge with selective absorption and collection of oil from water[J].Industrial & Engineering Chemistry Research,2013,52(27):9411-9416.
[3] Wang J,Zheng Y.Oil/water mixtures and emulsions separation of stearic acid-functionalized sponge fabricated via a facile one-step coating method[J].Separation & Purification Technology,2017,181:183-191.
[4] Yu L,Hao G,Shuai Z,et al.Durable and modified foam for cleanup of oil contamination and separation of oil-water mixtures[J].RSC Advances,2016,6(29):24773-24779.
[5] Wu D,Yu Z,Wu W,et al.Continuous oil-water separation with surface modified sponge for cleanup of oil spills[J].RSC Advances,2014,4(96):53514-53519.
[6] 王浩,钟伟,徐东晓,刘壮,等.管道用超疏水PTFE/PPS复合涂层的耐久性分析[J].塑料科技,2021,49(7):56-60.
[7] 段凤华,赵新宇,王锋.无氟耐用环氧/棕榈蜡/炭黑超疏水复合涂层的耐久性研究[J].塑料科技,2021,49(1):19-22.
[8] Ou J,Wan B,Wang F,et al.Superhydrophobic fibers from cigarette filters for oil spill cleanup[J].Rsc Advances,2016,6(50):44469-44474.
[9] 粟驰,张程蕾.石墨烯及衍生除油材料的研究进展[J].无机盐工业,2021,53(7):30-35.
[10] Li J,Zhao Z,Kang R,et al.Robust superhydrophobic candle soot and silica composite sponges for efficient oil/water separation in corrosive and hot water[J].Journal of Sol-Gel Science and Technology,2017,82(3):817-826.
[11] 尚倩倩,胡云,刘承果,等.超疏水纤维素复合气凝胶的制备及其油水分离[J].林业工程学报,2019,4(3):86-92.
[12] 闫茜,谢谚,李龙,等.新型吸附材料在水上溢油应急处理中的应用[J].应用化工,2020,49(5):1240-1244.
[13] 陈良晓,姚大虎,汤慧慧,等.超疏水亲油海绵的制备与表征[J].化工新型材料,2018,46(12):218-221.
[14] 杨晨曦,李娟,王健.改性海绵的合成策略及其油水分离应用研究进展[J].化工新型材料,2020,48(8):18-21,26.
[15] Li Minxuan,Xu Xu,Zhang Lei.Fabricated superhydrophobic three-dimensional rambutan-like-β-NiOOH @sponge skeletons for multitasking oil-water separation[J].Journal of Industrial and Engineering Chemistry,2020,84:340-348.
[16] Ruan C,Ai K,Li X,et al.A superhydrophobic sponge with excellent absorbency and flame retardancy[J].Angewandte Chemie International Edition,2014,53(22):5556-5560.
[17] Zhu Q,Pan Q.Mussel-inspired direct immobilization of nanoparticles and application for oil-water separation[J].ACS Nano,2014,8:1402-1409.
[18] 李恒,卢珣,吴叔青.超疏水有机硅涂层的制备与性质研究[J].功能材料,2014,45(S2):97-100.
[19] 尤磊,宋玉峰,李西营.疏水化SiO2纳米颗粒及其超疏水涂层的制备[J].化学研究,2018,29(6):603-608.
[20] 刘帅卓,张骞,刘宁,等.三聚氰胺海绵的一步式协同超疏水改性及在油水分离中的应用[J].高等学校化学学报,2020,41(3):521-529.
[21] 喻媛,董文瑞,杨悦悦,等.凹凸棒基超润湿材料在油水分离中的应用研究进展[J].化工新型材料,2019,47(S1):193-196.
基金资助
河北省科技厅大中学生科技创新能力培育专项(202251001010163);沧州市科技局重点研发计划项目(204104003);沧州师范学院校内科研基金重点项目(XNJJLZD2021001)
PDF
