title: Fabrication of polysiloxane-modified polyurethane sponge as low-cost organics/water separation and selective absorption material.
abstract: Through sol-gel and dip-coating processes, commercial polyurethane sponge modified by polysiloxane was fabricated under low temperature (60 °C) and atmosphere. The contact angle of the obtained polysiloxane/polyurethane sponge is 145 ± 5°. Hence, the polysiloxane/polyurethane sponge could float on water and selectively absorb organics from the surface of the water, indicating simultaneous properties of hydrophobicity and oleophilicity. The absorbent maximum value is 50-150 times of its own weight. The polysiloxane/polyurethane sponge exhibited excellent recyclability, which could be reused by squeezing the sponge due to its high mechanical stability and flexibility. Thermogravimetry-differential thermal analysis test indicated that the polysiloxane/polyurethane sponge exhibited good thermal stability and the stable contact angle of samples tested under increasing temperature indicated its good weather resistance. Due to the commercial property of polyurethane sponge and easy-handling of polysiloxane, the polysiloxane/polyurethane sponge can be easily scaled up to recover a large-area oil spill in water and further work based on the designed equipment has been under consideration.
authors: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
authors: Zhengshan
authors: Z
authors: Cui
authors: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China E-mail: liujun1227@mail.ujs.edu.cn.
authors: Wanxia
authors: W
authors: He
authors: School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China E-mail: liujun1227@mail.ujs.edu.cn.
authors: Jun
authors: J
authors: Liu
authors: Center of Analysis and Test, Jiangsu University, Zhenjiang 212013, China.
authors: Wei
authors: W
authors: Wei
authors: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
authors: Liang
authors: L
authors: Jiang
authors: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
authors: Jun
authors: J
authors: Huang
authors: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
authors: Xiaomeng
authors: X
authors: Lv
mesh_terms: D000327:Adsorption; D057927:Hydrophobic and Hydrophilic Interactions; D059392:Petroleum Pollution / Q000517:prevention & control*; D011140:Polyurethanes / Q000737:chemistry*; D059027:Recycling; D012833:Siloxanes / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000191:economics / Q000379:methods*
chemical_list: C050915:K-III polyurethane-polysiloxane complex; D011140:Polyurethanes; D012833:Siloxanes