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<p>Sophisticated structural design and multi-step manufacturing processes for preparing efficient oil–water separation membranes are major limitations in the widespread application of oil/water separation materials. A novel approach was developed to fabricate a biomass cellulose-based oil/water separation membrane with controllable mean pore size, high strength, and practical functionality. The membrane was prepared through blending hardwood cellulose with refined microfibrillated softwood cellulose (MFC) using a facile papermaking technique, followed by sequential impregnation of phenolic resin (PR) and polydimethylsiloxane (PDMS) to achieve hydrophobicity. Remarkably, the membrane achieved oil/water separation under gravity-driven conditions with a flux of 1135 L/m<sup>2</sup>·h and &gt; 99% efficiency across multiple emulsions, attributed to its hierarchical porosity and low surface energy (water contact angle: 134.8°). The optimized membrane (1% PDMS) exhibited robust pressure resistance (1.57&#xa0;kPa) and reusability (&gt; 5 cycles without performance decay), addressing the pleating processability limitations of conventional hydrophobic membranes. This work presents a scalable and cost-effective approach to designing high-performance separation materials, bridging the gap between laboratory innovation and industrial deployment.</p>

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High strength hydrophobic membrane from wood fibers for oil/water separation

  • 期刊论文

  • 发表日期：

    2026年6月22日

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  • Mingyue Zhao,
  • Lanfeng Hui,
  • Qian Yang,
  • Zhiqiang Zhao,
  • Dayong Ding

摘要

Sophisticated structural design and multi-step manufacturing processes for preparing efficient oil–water separation membranes are major limitations in the widespread application of oil/water separation materials. A novel approach was developed to fabricate a biomass cellulose-based oil/water separation membrane with controllable mean pore size, high strength, and practical functionality. The membrane was prepared through blending hardwood cellulose with refined microfibrillated softwood cellulose (MFC) using a facile papermaking technique, followed by sequential impregnation of phenolic resin (PR) and polydimethylsiloxane (PDMS) to achieve hydrophobicity. Remarkably, the membrane achieved oil/water separation under gravity-driven conditions with a flux of 1135 L/m2·h and > 99% efficiency across multiple emulsions, attributed to its hierarchical porosity and low surface energy (water contact angle: 134.8°). The optimized membrane (1% PDMS) exhibited robust pressure resistance (1.57 kPa) and reusability (> 5 cycles without performance decay), addressing the pleating processability limitations of conventional hydrophobic membranes. This work presents a scalable and cost-effective approach to designing high-performance separation materials, bridging the gap between laboratory innovation and industrial deployment.