Superhydrophobic and breathable polydimethylsiloxane/ nano-SiO2@polylactic acid electrospun membrane with core-sheath fiber structure
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影响因子：6.5
DOI码：10.1016/j.porgcoat.2023.108126
发表刊物：Progress in Organic Coatings
摘要：Polylactic acid (PLA) has great potential to replace traditional petroleum-based polymers, especially in membrane production, due to its biocompatibility, degradability, and renewability. However, there are rare reports of superhydrophobic and breathable PLA membranes. In this work, a multifunctional PDMS/SiO2@PLA membrane with superhydrophobicity and breathability was prepared by coaxial electrospinning method to coat the surface of PLA fiber with a thin layer of biocompatible polydimethylsiloxane (PDMS) and nano-silica particles. The prepared membrane has a water contact angle (WCA) of 151.8 ± 1.3◦ and a water sliding angle (WSA) of 5.7 ± 0.3◦. Thanks to its superhydrophobicity, it can support a water column of 195 cm. The membrane has excellent breathability that its water vapor transmission rate is ~14.7 kg⋅m-2⋅24 h-1. Moreover, the freezing time of the membrane is 2.25 times longer than that of the original PLA membrane. In addition, it has an oil-water separation efficiency of 99.9 % and a flux of ~12,300 L⋅m-2⋅h-1. The overall performance of this multi-functional PDMS/SiO2@PLA membrane is one of the best among the fluorine-free electrospun membranes.
论文类型：期刊论文
学科门类：工学
文献类型：J
卷号：187
页面范围：108126
是否译文：否
发表时间：2023-12-08
收录刊物：SCI
发布期刊链接：https://www.sciencedirect.com/science/article/pii/S0300944023007221