乙烯醇
材料科学
化学工程
膜
相对湿度
醋酸乙烯酯
醋酸纤维素
共聚物
明胶
静电纺丝
高分子化学
纤维素
接触角
润湿
水运
水分
复合材料
化学
聚合物
有机化学
工程类
物理
热力学
环境工程
水流
生物化学
作者
Xia Li,Linlin Li,Yewen Xiao,Feng Xiao,Wei Ji,Shaotong Jiang,Hualin Wang
标识
DOI:10.1016/j.carbpol.2022.120269
摘要
An intelligent bionic trilayer fibrous membrane is developed via electrospinning for the moisture-adjusting of a storage space. The trilayer is composed of a hydrophobic inner layer of cellulose acetate (CA), a super hygroscopic intermediate layer of gelatin (GA) and a hydrophilic outer layer of ethylene-vinyl alcohol copolymer (EVOH). The hierarchical pore networks of EVOH/GA/CA (∼2.45/∼4.5/∼36.0 μm) and the asymmetry wettability endow the membrane with outstanding directional water transport capacity. Specifically, the membrane has an excellent accumulative one-way transport index (1293 %), a remarkable overall moisture management capacity (0.91) and a reasonably high water evaporation rate (0.59 g h-1). The target membrane can regulate the relative humidity (RH) from 75 % to 50 % without extra energy consumption, which is capable of extending the shelf-life of jerk beef by ∼100 % under surrounding temperature of 25 °C and humidity of 75 % RH.
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