二硫化钼纳米片修饰聚氨酯海绵及吸油性能研究

以二硫化钼( MoS2)粉末为原料,采用超声辅助液相剥离法制备了MoS2纳米片,通过MoS2纳米片和聚二甲基硅氧烷( PDMS)依次修饰聚氨酯( PU)海绵,制备了疏水亲油性质的PU-MoS2吸油材料,并测试了其接触角和吸油性能。结果表明,所制备的PU-MoS2海绵有着优良的疏水亲油性能和较强的吸油能力。对不同的有机液体,PU-MoS2海绵分别能够吸取自身重量12~86倍的有机溶剂。尺寸较小MoS2纳米片修饰制备的PU-MoS2海绵具有较高的吸油能力。此外,PU-MoS2海绵在重复使用20次后仍能保持强的吸油能力,表明其可循环利用,具有良好的应用前景。

Preparation and Oil Absorption Properties of MoS2-modified PU Sponge

MoS2 nanosheets were prepared from MoS2 powders through ultrasonic liquid exfoliation method. Hydrophobic polyurethane ( PU ) sponges for oil absorption were fabricated by subsequent modification with MoS2 nanosheets and polydimethylsiloxane ( PDMS ) . The contact angle and oil absorbent properties of the obtained sponges were measured. The results indicate that PU-MoS2 sponge shows good hydrophobicity and oil absorption capacity. PU-MoS2 sponge has absorbent capacities of 12-86 times of their own weight for different organic solvent. The PU-MoS2 sponge obtained by coating with smaller size MoS2 nanosheets has relatively higher absorption capacity. Moreover, the absorption capacity of the PU-MoS2 sponge did not deteriorate after it was reused for 20 times, so the PU-MoS2 sponge has excellent recyclability for future application.