National Engineering Research Center for Advanced Polymer Processing Technology, Key Laboratory of Material Processing and Mold of Ministry of Education, Zhengzhou University, Wenhua Road 97-1, Zhengzhou, 450002, P. R. China.
Institute of Polymer Materials, Friedrich-Alexander-University Erlangen-Nuremberg, Martensstr. 7, Erlangen, 91058, Germany.
Macromol Rapid Commun. 2022 Sep;43(17):e2200177. doi: 10.1002/marc.202200177. Epub 2022 Apr 11.
For decades, crude oil spills and oil wastewater have become the most problematic environmental pollution and damage to public health. Therefore, it is considerable to develop superhydrophobic polymer foam for separating oil from water with high selectivity and sorption capacity. Here, a new type of environmentally friendly pure polypropylene (PP) foam with superhydrophobicity is first time proposed with a particular coexistence of microspheres and microporous structure fabricated via an advanced solvent-evaporation method. The PP foam exhibits exceptional superhydrophobic with a water contact angle of 151° and the maximum saturated adsorption capacity of 26 g g . After more than 15 h of cyclic continuous oil-water pumping experiment, it still maintains a high oil absorption efficiency of 98%, providing the basis for practical commercial applications. More importantly, the variation of hydrophobic properties is described by Flory-Huggins polymer solution theory and Huggins interaction parameters, and the optimal solution ratio range is predicted which provides a relevant theoretical basis for actual industrial production.
几十年来，原油泄漏和含油废水已成为最具问题性的环境污染和对公众健康的损害。因此，开发对油具有高选择性和高吸附容量的超疏水聚合物泡沫材料是很有意义的。在这里，首次提出了一种新型的环保型纯聚丙烯（PP）泡沫，它具有特殊的微球和微孔结构共存，是通过先进的溶剂蒸发方法制造的。PP 泡沫具有出色的超疏水性，水接触角为 151°，最大饱和吸附容量为 26 g/g。经过超过 15 小时的连续循环油水泵送实验，它仍保持 98%的高吸油效率，为实际商业应用提供了基础。更重要的是，通过 Flory-Huggins 聚合物溶液理论和 Huggins 相互作用参数描述了疏水性的变化，并预测了最佳的溶液比例范围，为实际的工业生产提供了相关的理论依据。
