The present study is focussed on the impact of change in the lactate concentration (43 mM and 22 mM) in sweat solution on liquid moisture transmission behaviour through the clothing. The sweat solution with higher concentration of lactate (43 mM) shows delayed wetting at the top surface both in case of individual layer and multi-layer fabric ensembles, i.e. it takes longer time to wet the top surface in spite of the lower contact angle made by it. Significant difference is observed in inplane transmission behaviour of both the sweat solutions in the case of multi-layered ensembles. In case of multi-layered ensembles, wetting time reduces drastically, even though both the ensembles consist of polyester knit as the inner surface possessing wetting time is 50 s approximately. Sweat solution with higher lactate concentration also shows higher crossplanar transmission rate as compared to in-plane transmission. Uni-directional seamed multi-layered spacer fabric exhibits better overall moisture management coefficient as compared to bi-directional seamed spacer ensembles with sweat solution containing higher lactate concentration. Middle layer also plays a vital role in altering the overall liquid moisture transmission behaviour.

中文翻译：

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汗液中不同乳酸浓度对分层整体液体水分传输行为的影响

本研究的重点是汗液中乳酸浓度（43 mM 和 22 mM）的变化对通过衣服的液体水分传输行为的影响。具有较高浓度乳酸 (43 mM) 的汗液在单层和多层织物整体的情况下显示出顶面润湿延迟，即尽管接触角较低，但润湿顶面需要更长的时间通过它。在多层合奏的情况下，两种汗液溶液的面内传输行为存在显着差异。在多层合奏的情况下，润湿时间会急剧减少，即使两个合奏都由聚酯针织物组成，因为内表面的润湿时间约为 50 秒。与平面内传输相比，具有较高乳酸浓度的汗液也显示出更高的平面传输率。与含有较高乳酸浓度的汗液的双向缝合间隔织物相比，单向缝合多层间隔织物表现出更好的整体水分管理系数。中间层在改变整体液体水分传输行为方面也起着至关重要的作用。