Thermoresponsive Cellulose Acetate–Poly(N-isopropylacrylamide) Core–Shell Fibers for Controlled Capture and Release of Moisture,ACS Applied Materials & Interfaces

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Thermoresponsive Cellulose Acetate–Poly(N-isopropylacrylamide) Core–Shell Fibers for Controlled Capture and Release of Moisture
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-08-18 00:00:00 , DOI: 10.1021/acsami.7b07559
Neha Thakur ₁ , Anupama Sargur Ranganath ₁ , Kostiantyn Sopiha ₁ , Avinash Baji ₁

Affiliation

In this study, we used core–shell electrospinning to fabricate cellulose acetate–poly(N-isopropylacrylamide) (CA–PNIPAM) fibrous membranes and demonstrated the ability of these fibers to capture water from a high humid atmosphere and release it when thermally stimulated. The wettability of the fibers was controlled by using thermoresponsive PNIPAM as the shell layer. Scanning electron and fluorescence microscopes are used to investigate the microstructure of the fibers and confirm the presence of the core and shell phases within the fibers. The moisture capturing and releasing ability of these core–shell CA–PNIPAM fibers was compared with those of the neat CA and neat PNIPAM fibers at room temperature as well as at an elevated temperature. At room temperature, the CA–PNIPAM core–shell fibers are shown to have the maximum moisture uptake capacity among the three samples. The external temperature variations which trigger the moisture response behavior of these CA–PNIPAM fibers fall within the range of typical day and night cycles of deserts, demonstrating the potential use of these fibers for water harvesting applications.

中文翻译：

热敏性醋酸纤维-聚（N-异丙基丙烯酰胺）核-壳纤维，可控制地捕获和释放水分

在这项研究中，我们使用核-壳电纺丝来制造醋酸纤维素-聚（N-异丙基丙烯酰胺（CA-PNIPAM）纤维膜，并证明了这些纤维具有从高湿气中捕获水并在热刺激下释放水的能力。通过使用热响应性PNIPAM作为壳层来控制纤维的润湿性。扫描电子显微镜和荧光显微镜用于研究纤维的微观结构，并确认纤维内核相和壳相的存在。比较了这些核-壳型CA-PNIPAM纤维在室温以及高温下与纯CA和纯PNIPAM纤维的吸湿和释放能力。在室温下，显示出CA–PNIPAM核壳纤维在三个样品中具有最大的吸湿能力。

更新日期：2017-08-18

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