Cellulose acetate-based composite fibrous mat with mechanically stable pore structure showing excellent hydrophobicity for effective oil spill treatment

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composites Communications Pub Date : 2024-09-19 DOI:10.1016/j.coco.2024.102093

Yu Zhang, Xinyu Chen, Ying Li, Jie Liu, Kai Liu, Yuanqiang Xu, Xiaomin Zhang, Yongchun Zeng

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Abstract

Eco-friendly cellulose acetate (CA) based composite fibrous mat with mechanically stable pore structure and rough fibers is successfully fabricated via a simple and one-step electrospinning method. Based on the phase migration during electrospinning, the flexible polymer of thermoplastic polyurethane (TPU) with low surface tension tends to concentrate on the surface of the CA/TPU composite fibers, endowing the fibrous mat exhibiting hydrophobicity and super-oleophilicity. The TPU component creates the bonding among composite fibers, stabilizing the pore structure by increasing the modulus and tensile strength of the CA/TPU fibrous mat. Finally, the as-designed CA/TPU composite fibrous mat could selectively and efficiently absorb various oils from oil-water mixtures featuring high saturation absorption capacity of 28.35–64.18 gg^-1 and excellent durability. Besides, the CA/TPU composite fibrous mat exhibits exceptional environmental stability and a continuous oil-water separation capacity to purify the polluted water, revealing a great potential for practical application.

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醋酸纤维素基复合纤维毡具有机械稳定的孔隙结构，具有优异的疏水性，可用于有效处理溢油

基于醋酸纤维素（CA）的环保型复合纤维毡通过简单的一步电纺丝法成功制成，该纤维毡具有机械稳定的孔隙结构和粗糙的纤维。基于电纺丝过程中的相迁移，具有低表面张力的热塑性聚氨酯（TPU）柔性聚合物趋向于集中在醋酸纤维素/热塑性聚氨酯复合纤维的表面，使纤维毡具有疏水性和超亲油性。热塑性聚氨酯成分在复合纤维之间形成粘合，通过提高 CA/TPU 纤维毡的模量和拉伸强度来稳定孔隙结构。最后，所设计的 CA/TPU 复合纤维毡可选择性地、高效地吸收油水混合物中的各种油类，具有 28.35-64.18 gg-1 的高饱和吸收能力和优异的耐久性。此外，CA/TPU 复合纤维毡还具有优异的环境稳定性和持续的油水分离能力，可净化被污染的水体，具有巨大的实际应用潜力。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.