Environmentally friendly waterborne polyurethane nanofibrous membranes by emulsion electrospinning for waterproof and breathable textiles
Environmentally friendly waterborne polyurethane nanofibrous membranes by emulsion electrospinning for waterproof and breathable textiles
复制标题
乳液静电纺丝环保型水性聚氨酯纳米纤维膜用于防水透气纺织品
DOI：
10.1016/j.cej.2021.130925
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发表时间：
2021-06-25
影响因子：
15.1
通讯作者：
Ding, Bin
中科院分区：
文献类型：
--
作者：
Zhou, Wen;Gong, Xiaobao;Ding, Bin
由于其在医疗卫生，可穿戴电子产品和户外服装中的广泛潜力，全球对具有防水和透气性能的智能纳米纤维膜的需求不断增长。基于环保溶剂的高性能材料的设计至关重要，但极具挑战性。在这里，我们报告了一个简单而强大的策略，以创建环境友好的水性聚氨酯纳米纤维膜具有高防水性和透气性，使用水基乳液静电纺丝技术结合热处理。采用乳液静电纺丝技术，通过原位掺杂水性含氟聚合物和氮丙啶交联剂，并结合热处理，构建了小孔径、高孔隙率的水性聚氨酯纳米纤维膜疏水通道。所得的环境友好的纳米氧化铝膜具有良好的静水压（74.3kPa）、令人印象深刻的空气渗透率（9.3mm s（-1））、优异的水蒸气透过率（12.8kg m（-2）d（-1））和高弹性（67.4%），从而在恶劣环境中提供高水平的个人保护和舒适的微气候。这种有趣的纳米纤维膜的成功构建可以作为用于各种应用的其他纤维材料的绿色合成的灵感来源。
There is a growing demand worldwide on smart nanofibrous membranes with waterproof and breathable performances owing to their wide potential in medical hygiene, wearable electronics, and outdoor clothing. Design of such high-performance materials based on environmentally friendly solvents is crucial but highly challenging. Here, we report a facile and powerful strategy to create environmentally friendly waterborne polyurethane nanofibrous membranes with high waterproofness and breathability using water-based emulsion electrospinning technique combined with heating treatment. The hydrophobic channels of waterborne polyurethane nanofibrous membranes with small pore size and high porosity are constructed using emulsion electrospinning technique by in-situ doping of water-based fluoropolymer and aziridine crosslinker combined with heating treatment. The resultant environmentally friendly nanofibmus membranes exhibit good hydrostatic pressure of 74.3 kPa, impressive air permeability of 9.3 mm s(-1), outstanding water vapor transmission rate of 12.8 kg m(-2) d(-1), and high elasticity of 67.4%, thus providing the high-level personal protection and comfortable microclimate in harsh environments. The successful construction of such intriguing nanofibrous membranes could serve as a source of inspiration for the green synthesis of other fibrous materials for a variety of applications.