Chemical Industry and Engineering Progress ›› 2023, Vol. 42 ›› Issue (10): 5353-5362.DOI: 10.16085/j.issn.1000-6613.2022-2037

• Materials science and technology • Previous Articles     Next Articles

Facile synthesis of superhydrophobic sponge for efficient separation of oil/water mixture

LU Tao1,2(), HU Jiayi1, XU Cheng3, HU Xinlin1, GUO Qingyang1, LI Meng1()   

  1. 1.School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, Shaanxi, China
    2.Xi’an Bairuinuo Electromechanical Technology Co. , Ltd. , Xi’an 710025, Shaanxi, China
    3.School of Mechatronic Engineering, Xi’an Technological University, Xi’an 710021, Shaanxi, China
  • Received:2022-11-02 Revised:2023-01-06 Online:2023-11-11 Published:2023-10-15
  • Contact: LI Meng

超疏水海绵的简易制备及其高效油/水分离性能

路涛1,2(), 胡嘉怡1, 徐成3, 胡鑫琳1, 郭庆阳1, 李朦1()   

  1. 1.西安工业大学材料与化工学院,陕西 西安 710021
    2.西安百瑞诺机电科技有限公司,陕西 西安 710025
    3.西安工业大学机电工程学院,陕西 西安 710021
  • 通讯作者: 李朦
  • 作者简介:路涛(1987—),男,工程师,研究方向为功能高分子材料。E-mail:lutao0810@163.com
  • 基金资助:
    国家自然科学基金(52303065);陕西省教育厅专项科研计划(21JK0685);西安工业大学2022年省级大创项目(S202210702108)

Abstract:

The hydrophobic modification for melamine sponge (MS) was achieved with fluorine-free hydrophobic silica (SH-SiO2)/hydroxy acrylic resin composite coating (SPAC), which was facile, eco-friendly, cost-effective and scalable. The changes in composition, structure, properties and wettability of the sponge before and after hydrophobic modification were analyzed by infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), water contact angle (WCA), scanning electron microscopy (SEM) and mechanical properties test. The oil/water separation performance of SMS was investigated systematically via the tests of solvent adsorption, recycling, continuous separation and emulsion separation. The results indicated that the as-prepared SMS showed excellent oils/organic solvents sorption capacity (up to 76—170 times its own weight) and outstanding recyclability after 30 cycles of absorption-squeezing-heating. Additionally, the SMS can be utilized as a high-efficient adsorbent for continuous oil/water separation and was capable of separating surfactant-stabilized water-in-oil emulsions. These excellent properties were attributed to the synergistic effect of the unique low density (ρ about 8.1mg/cm3), high porosity (99.48%) structure and the selective adsorption of SMS, which provided the basis for its application in oil spill treatment and environmental remediation.

Key words: superhydrophobic, non-fluorinated, melamine sponge, oil/water separation, selective adsorption

摘要:

使用无氟疏水二氧化硅(SH-SiO2)/羟基丙烯酸树脂复合涂料(SPAC)对三聚氰胺海绵(MS)进行疏水改性,实现了超疏水海绵(SMS)的简单、无氟、成本低且可大规模化生产。采用红外光谱(FTIR)、X射线光电子能谱(XPS)、水接触角(WCA)、扫描电镜(SEM)和力学性能测试分析了疏水改性前后海绵的组成、结构、性能和润湿性的变化;通过溶剂吸附量、循环利用、连续分离、乳液分离测试系统研究了SMS的油/水分离性能。研究结果表明:制备的SMS具有优异的油/有机溶剂吸附能力(可达自身质量的76~170倍)、重复利用性(经30次吸附-挤压-加热循环后吸附能力未明显降低)、连续从水体系中分离油/有机溶剂的能力以及分离含有表面活性剂的油包水型乳液的能力(分离效率>98%)。这归因于SMS独特的低密度(ρ约为8.1mg/cm3)、高孔隙率(99.48%)结构和选择吸附性的协同作用,为其在溢油处理和环境修复领域应用奠定了基础。

关键词: 超疏水, 无氟, 三聚氰胺海绵, 油/水分离, 选择吸附性

CLC Number: 

京ICP备12046843号-2;京公网安备 11010102001994号
Copyright © Chemical Industry and Engineering Progress, All Rights Reserved.
E-mail: hgjz@cip.com.cn
Powered by Beijing Magtech Co. Ltd