Abstract The oil-water separation has made an attention due to over-increased production of oily water from the industrial process and everyday routine of humans. The current work reports on preparation and characterization of High-Density Polyethylene (HDPE) aerogel coated Natural Rubber Latex foam (NRLF) with superhydrophobic and superoleophilic character, good sorption capacity for oil-water separation application and were investigated. The HDPE aerogel and the coated NRLF material was prepared by a cooling process from a solution of HDPE in xylene solvent (HDPE sole, which resulted into thermally induced phase separation of the Polyethylene molecular network). The HDPE aerogel coated NRLF displayed a porous surface morphology with particle-like structural features. The HDPE aerogel coated NRLF showed superhydrophobicity with static water contact angle >150°. The effect and recyclability of the HDPE aerogel coated NRLF for oil-water separation was investigated using different model oil solvents to explore their repeatable application in oil spill clean-up process. Modified NRLF shows an excellent mechanical property (compressibility). The average modulus and average stiffness of the modified NRLF increased with the increase of the concentration of HDPE sol. The modified superhydrophobic sponge has good durability under acid and base conditions.

中文翻译：

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用于油水分离应用的超疏水和超亲油聚乙烯气凝胶涂层天然橡胶乳胶泡沫

摘要 由于工业过程和人类日常生活中油水的过度产生，油水分离已引起人们的关注。目前的工作报告关于制备和表征高密度聚乙烯 (HDPE) 气凝胶涂层天然橡胶乳胶泡沫 (NRLF) 具有超疏水和超亲油特性，油水分离应用具有良好的吸附能力，并进行了研究。HDPE 气凝胶和涂覆的 NRLF 材料是通过冷却过程从 HDPE 在二甲苯溶剂中的溶液制备的（HDPE 唯一，导致聚乙烯分子网络的热诱导相分离）。HDPE 气凝胶涂覆的 NRLF 显示出具有颗粒状结构特征的多孔表面形态。HDPE 气凝胶涂覆的 NRLF 显示出超疏水性，静态水接触角 >150°。使用不同的模型油溶剂研究了 HDPE 气凝胶涂层 NRLF 用于油水分离的效果和可回收性，以探索它们在溢油清理过程中的可重复应用。改性 NRLF 显示出优异的机械性能（可压缩性）。改性NRLF的平均模量和平均刚度随着HDPE溶胶浓度的增加而增加。改性超疏水海绵在酸碱条件下具有良好的耐久性。改性 NRLF 显示出优异的机械性能（可压缩性）。改性NRLF的平均模量和平均刚度随着HDPE溶胶浓度的增加而增加。改性超疏水海绵在酸碱条件下具有良好的耐久性。改性 NRLF 显示出优异的机械性能（可压缩性）。改性NRLF的平均模量和平均刚度随着HDPE溶胶浓度的增加而增加。改性超疏水海绵在酸碱条件下具有良好的耐久性。