海绵
聚二甲基硅氧烷
材料科学
淀粉
溶剂
化学工程
接触角
聚氨酯
高分子化学
复合材料
化学
有机化学
植物
生物
工程类
作者
Yushan Li,Jie Li,Yiyi Lu,Wentian Shi,Huafeng Tian
出处
期刊:Polymer
[Elsevier]
日期:2022-12-01
卷期号:262: 125505-125505
被引量:2
标识
DOI:10.1016/j.polymer.2022.125505
摘要
Common separation materials are divided into two-dimensional (2D) materials and three-dimensional (3D) materials, among which three-dimensional materials have excellent durability and stability. Herein, we developed a durable [email protected]@PU sponge by simply immersing polyurethane (PU) sponges in a blending solution of starch granules and polydimethylsiloxane (PDMS). Blending starch granules and PDMS could achieve more reliable adhesion of starch granules to the PU sponge by utilizing the high adhesion of PDMS. At the same time, the presence of starch granules could make PDMS form a spot-like secondary structure on the sponge. The sponge exhibited excellent hydrophobicity and high organic solvent affinity, and could separate and absorb organic solvents from the turbulent flow. The results showed that the sponge could absorb and hold 46 times its organic solvent weight, with a separation efficiency greater than 98.5% for different organic solvents. In addition, the sponge maintained a water contact angle of more than 140° after 40 abrasion cycles or after immersion in different pH and salt solutions for 48 h, showing excellent mechanical durability and chemical stability.
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