基于形状记忆纤维的自适应红外和水门控纺织品,ACS Applied Materials & Interfaces

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基于形状记忆纤维的自适应红外和水门控纺织品
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-11-29 , DOI: 10.1021/acsami.2c15974
Ayoung Choe ₁ , Yeju Kwon ₁ , Young-Eun Shin ₁ , Jeonghee Yeom ₁ , Jeeyoon Kim ₁ , Hyunhyub Ko ₁

Affiliation

体温调节是人体适应周围温度的基本功能。刺激响应智能纺织品可以有效保护人体皮肤温度免受不断变化的环境影响。在此，我们开发了一种基于形状记忆聚合物 (SMP) 纤维的智能纺织品，用于自适应调节人体皮肤上的红外线和水传输。SMP 纺织品采用分层微/纳米多孔结构制造，以增强隔热性能，银纳米线涂在一侧以提供不对称的 IR 反射率和亲水性。多孔 SMP 纺织品通过响应刺激的形状和结构的变形和恢复显示出良好的隔热性和不对称润湿性可调性。隔热度由65控制。原始值的 7%，并且由于自适应红外反射率，热板上 SMP 纺织品的表面温度在红外图像中得到成功控制。此外，水滴的定向传输可以根据 SMP 纺织品的形状打开/关闭，可用于去除人体皮肤的汗液。这种红外和水门控智能纺织品可以提供一种可行的策略来保护人体皮肤免受外部环境变化的影响。

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Adaptive IR- and Water-Gating Textiles Based on Shape Memory Fibers

Thermoregulation is an essential function of the human body for adapting to the surrounding temperature. Stimuli-responsive smart textiles can provide effective protection of the human skin temperature from a continuously changing environment. Herein, we develop a smart textile based on shape memory polymer (SMP) fibers for adaptive regulation of IR and water transmission on human skin. An SMP textile is fabricated with hierarchical micro/nanoporous structures to enhance thermal insulation performance, and silver nanowires are coated on one side to provide asymmetric IR reflectivity and hydrophilicity. The porous SMP textile shows great tunability of thermal insulation and asymmetric wettability by deformation and recovery of the shape and structure in response to stimuli. The degree of thermal insulation is controlled by 65.7% of the original value, and the surface temperature of the SMP textile on a hot plate is successfully controlled in the IR images due to adaptive IR reflectivity. Additionally, the directional transportation of water droplets can be switched on/off according to the shape of the SMP textiles, which can be employed for sweat removal from the human skin. This IR- and water-gating smart textile can provide a feasible strategy for protecting the human skin from external environmental changes.

更新日期：2022-11-29

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