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首页> 美国卫生研究院文献>Polymers >In-Situ Synthesis of Hydrophobic Polyurethane Ternary Composite Induced by Hydroxyethyl Cellulose through a Green Method for Efficient Oil Removal
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In-Situ Synthesis of Hydrophobic Polyurethane Ternary Composite Induced by Hydroxyethyl Cellulose through a Green Method for Efficient Oil Removal

机译：通过绿色方法原位合成羟乙基纤维素诱导的疏水性聚氨酯三元复合材料的高效除油

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摘要

Hydroxyethyl cellulose (HEC) was introduced to activate the surface of polyurethane (PU) sponge to successfully prepare a hydrophobic ternary composite PU/HEC/SiO . The hydrophobic layer of the composite was realized by in-situ polymerization of methyltriethoxysilane (MTES) onto the surface of PU sponge. The formation of a stable hydrophobic SiO layer solved successfully the problem of ease of SiO particles shedding from the composite. Moreover, the amphiphilic molecules produced by the hydrolysis of MTES monomers facilitated the preparation of hydrophobic materials by aqueous dispersion polymerization. Aqueous synthesis made the reaction process environmentally-friendly and pollution-free. The as-prepared composite PU/HEC/SiO not only retains high porosity and low density of the PU sponge, but also considerably reduced the surface free energy and increased the surface roughness of the PU sponge. Therefore, outstanding hydrophobicity and high porosity endow the composite with excellent oil removal capability as a high-efficiency absorbent. Moreover, the hydrophobic composite that had absorbed oil could be regenerated easily by squeezing and recycling.
机译：引入羟乙基纤维素（HEC）活化聚氨酯（PU）海绵的表面，成功制备了疏水性三元复合材料PU / HEC / SiO。复合材料的疏水层是通过将甲基三乙氧基硅烷（MTES）原位聚合到PU海绵表面上来实现的。稳定的疏水性SiO层的形成成功解决了SiO颗粒易于从复合物中脱落的问题。而且，由MTES单体水解产生的两亲分子有助于通过水分散聚合制备疏水性材料。水性合成使该反应过程环保且无污染。所制备的复合PU / HEC / SiO不仅保留了PU海绵的高孔隙率和低密度，而且还大大降低了其表面自由能并增加了PU海绵的表面粗糙度。因此，优异的疏水性和高孔隙率赋予复合物作为高效吸收剂的优异的除油能力。而且，吸收了油的疏水性复合材料可以通过挤压和再循环而容易地再生。

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