应用化学
今天是

应用化学 ›› 2015, Vol. 32 ›› Issue (6): 726-732.DOI: 10.11944/j.issn.1000-0518.2015.06.140365

• 研究论文 • 上一篇    

聚二甲基硅氧烷/微纳米银/聚多巴胺修饰的超疏水海绵的制备和应用

杨啸天a,帅茜a,罗艳梅a,董亦可a,谭月明a,陈波a,马铭ab*()   

  1. a湖南师范大学,植化单体开发与利用湖南省重点实验室/化学生物学及中药分析教育部重点实验室 长沙 410081
    b
    南昌航空大学,江西省持久性污染物控制与资源循环利用重点实验室 南昌 330063
  • 收稿日期:2014-10-22 接受日期:2015-02-14 出版日期:2015-06-10 发布日期:2015-06-10
  • 通讯作者: 马铭 E-mail:mingma@hunnu.edu.cn
  • 基金资助:
    国家自然科学基金项目(21275052,21305041,21275049)湖南省科技计划项目(2013SK3125,2013WK4005)资助

Fabrication and Application of the Superhydrophobic Sponge Modified with Poly(dimethylsiloxane)/Silver Micro/Nano-particles/Polydopamine

YANG Xiaotiana, SHUAI Qiana, LUO Yanmeia, DONG Yikea, TAN Yueminga, CHEN Boa, MA Minga, b, *   

  1. aKey Laboratory of Phytochemical R&D of Hunan Province,Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research(Ministry of Education of China),Hu'nan Normal University,Changsha 410081,China)
    bKey Laboratory of Jiangxi Province for Persistant Pollutants Control and Resources Recycle(Nanchang Hangkong University),Nanchang 330063,China
  • Received:2014-10-22 Accepted:2015-02-14 Online:2015-06-10 Published:2015-06-10
  • Contact: Ming MA E-mail:mingma@hunnu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China (No.21275052, No.21305041, No.21275049), the Science Research Project of Hu'nan Provincial Science & Technology Department of China (No.2013SK3125, No.2013WK4005)

摘要:

受海洋贝类生物黏附蛋白的启发,在碱性环境下利用多巴胺的自聚合性质,在聚氨酯海绵表面聚合活性聚多巴胺薄层,采用葡萄糖还原银离子进一步沉积微纳米银粒子构筑表面微纳结构,并水解聚二甲基硅氧烷前驱体对表面进行疏水改性,制备出了接触角大于150°的超疏水表面。利用接触角测定、扫描电子显微镜及能量弥散X射线谱和傅里叶红外光谱等技术手段对制备的改性海绵进行了表征,表明微纳米银粒子和硅甲基疏水基团被成功修饰到了海绵表面。改性海绵对有机溶剂和油类物质具有高选择性和高吸收性。吸收的有机溶剂和油类物质的质量能够达到其自身质量的12倍以上。饱和吸收后的海绵仅通过物理挤压即可将吸收的物质回收并使海绵恢复弹性和吸附能力,得到再生。该研究为油水分离和废油回收提供了一种经济、高效、环境友好的方案。

关键词: 超疏水海绵, 改性海绵, 聚多巴胺, 微纳米银粒子, 聚二甲基硅氧烷, 油水分离

Abstract:

Inspired by adhesive proteins in mussels, we prepared polydopamine (PDA) thin layer on the polyurethane sponge surface using dopamine self-polymerization under alkaline solution. Ag+ was reduced by glucose to form silver micro/nano-particles on the PDA thin layer, and then wrapped by polydimethylsiloxane (PDMS) to fabricate superhydrophobic surface. The prepared superhydrophobic sponge was characterized by water contact angle measurement, scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS) and Fourier transform infrared spectra (FT-IR), respectively, and proved that silver micro/nano-particles and hydrophobic silicon methyl groups have been successfully modified onto the sponge surface. Treated sponge exhibits superior absorptivity and selectivity to organic solvents and different kinds of oil. Saturated gravimetric absorption capacity of this sponge to oil-like solvents reached at least 12 times its own mass. Solvents can be easily recycled by squeezing behavior and sponge can regain its elasticity and absorptivity. This study would provide an economical, efficient and environmental-friendly method for the oil-water separation and the oil recovery.

Key words: superhydrophobic sponge, modified sponge, polydopamine, silver micro/nano-particles, polydimethylsiloxane, oil-water separation

中图分类号: 

 Chinese Journal of Applied Chemistry
地址:长春市人民大街5625号 邮编:130022
电话:0431-85262016 85262330 传真:0431-85685653 E-mail: yyhx@ciac.ac.cn