Waterproof and moisture permeable microporous membranes are a critical part of the personal protective equipments. In this work, the fluoride‐free triblock copolymer poly(styrene‐b‐butadiene‐b‐styrene) (SBS) fibermats are prepared via electrospinning, and deposited directly on polyester to fabricate the waterproof‐breathable textiles. Focused on the fiber morphology effects, the beaded fibers formed during the electrospinning process have negative effect on waterproof and windproof performance of the SBS electrospun fibermat/polyester composites textiles, but have no obvious impact on moisture permeability. The uniform fibermats obtain hydrostatic pressure of 63.9 kPa, water vapor transmission rate of 4.54 kg m⁻² d⁻¹, and air permeability of 5.69 mm s⁻¹. Further research shows the SBS electrospun fibermats orientated by stretching demonstrate well tensile fatigue resistance while retaining good waterproof‐breathable performance under the extreme condition of polyester substrate destroyed. Moreover, the composite textiles obtain excellent wrinkle resistance, which can be ascribed to the excellent flexibility of the SBS electrospun fibermats.

中文翻译：

---

设计SBS弹性体电纺纤维毡/聚酯复合纺织品：形态对防水透气性能的影响

防水和透湿的微孔膜是个人防护设备的关键部分。在这项工作中，无氟三嵌段共聚物聚（苯乙烯-b-丁二烯-b-苯乙烯）（SBS）纤维毡是通过静电纺丝制备的，并直接沉积在聚酯上以制造防水透气的纺织品。着眼于纤维形态效应，在电纺过程中形成的串珠纤维对SBS电纺纤维毡/聚酯复合材料纺织品的防水和防风性能有负面影响，但对透湿性没有明显影响。均匀的纤维毡获得63.9 kPa的静水压力，4.54 kg m ^-2 d ^-1的水蒸气透过率和5.69 mm s ^-1的透气性。进一步的研究表明，通过拉伸取向的SBS电纺纤维毡具有良好的抗拉伸疲劳性能，同时在聚酯基材被破坏的极端条件下仍具有良好的防水透气性能。此外，该复合纺织品获得了优异的抗皱性，这可以归因于SBS电纺纤维毡的出色柔韧性。