Lin Chenxin, Wang Yifan, Liu Cenyu, Meng Kaiyue, Chang Endong, Wu Xiaowen, Wang Jiancheng
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China.
Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou 256606, China.
Polymers (Basel). 2025 Jan 8;17(2):135. doi: 10.3390/polym17020135.
Due to the high viscosity and low fluidity of viscous crude oil, how to effectively recover spilled crude oil is still a major global challenge. Although solar thermal absorbers have made significant progress in accelerating oil recovery, its practical application is largely restricted by the variability of solar radiation intensity, which is influenced by external environmental factors. To address this issue, this study created a new composite fiber that not only possesses solar energy conversion and storage capabilities but also facilitates crude oil removal. PF@PAN@PEG was obtained by coaxial electrospinning processing, with PEG within PAN fibers, and a coating layer was applied to the fiber surface to impart oleophilicity and hydrophobicity. PF@PAN@PEG exhibited a high latent heat value (77.12 J/g), high porosity, and excellent photothermal conversion and oil storage capabilities, significantly reducing the viscosity of crude oil. PF@PAN@PEG can adsorb approximately 11.65 g/g of crude oil under sunlight irradiation. Notably, due to the encapsulation of PEG, PF@PAN@PEG can continuously maintain the crude oil at a phase change temperature by releasing latent heat under specific conditions, effectively reducing its viscosity with no PEG leakage at all. When solar light intensity varied, the crude oil collection efficiency increased by 21.99% compared to when no phase change material was added. This research offers a potential approach for the effective use of clean energy and the collection of viscous crude oil spill pollution.
由于稠油具有高粘度和低流动性，如何有效回收泄漏的原油仍然是全球面临的重大挑战。尽管太阳能热吸收器在加速原油回收方面取得了显著进展，但其实际应用在很大程度上受到太阳辐射强度变化的限制，而太阳辐射强度受外部环境因素影响。为了解决这个问题，本研究制备了一种新型复合纤维，它不仅具有太阳能转换和储存能力，还便于原油去除。PF@PAN@PEG通过同轴静电纺丝工艺制备，PEG在PAN纤维内部，并且在纤维表面涂覆了一层以赋予其亲油性和疏水性。PF@PAN@PEG表现出高潜热值（77.12 J/g）、高孔隙率以及优异的光热转换和储油能力，显著降低了原油的粘度。PF@PAN@PEG在阳光照射下可吸附约11.65 g/g的原油。值得注意的是，由于PEG的封装，PF@PAN@PEG在特定条件下通过释放潜热可使原油持续保持在相变温度，有效降低其粘度且完全没有PEG泄漏。当太阳光强度变化时，与未添加相变材料相比，原油收集效率提高了21.99%。本研究为清洁能源的有效利用和稠油泄漏污染的收集提供了一种潜在方法。
