Li Qingyang, Bao Mengzhe, Li Wenbin, He Chong
State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei 430200, China.
School of Textile Science and Engineering, Wuhan Textile University, Wuhan, Hubei 430200, China.
ACS Appl Mater Interfaces. 2024 May 1;16(17):22411-22420. doi: 10.1021/acsami.4c01613. Epub 2024 Apr 17.
Massive production of SiO nanofibers with both high durability and exceptional performance remains a significant challenge. Herein, a novel approach was introduced to achieve the massive production of SiO nanofibers with lotus-leaf-inspired surfaces by combining solution blowing spinning (SBS) and the polymer-derived ceramics method. Based on the SBS technique, three types of precursor nanofiber products were fast spined with methyl silsesquioxane polymer and polymethyl hydrogen siloxane employed as Si sources. The flow rate of the SBS spined Si-based ceramic nanofibers was enhanced to 20 mL·h. Furthermore, through the integration of hydrophobic-oleophilic SiO nanoparticles into the precursor solution, SiO nanofibers with lotus-leaf nanoprotrusion surfaces were fabricated. Nanoparticle-decorated SiO fibers demonstrated excellent hydrophobicity (138.3°), compression resilience (∼60%), proficiency in organic pollutant adsorption, high-temperature resistance (∼1100 °C), and outstanding thermal insulation properties (thermal conductivity of 0.0165 W·(m·K)).
大规模生产兼具高耐久性和卓越性能的二氧化硅纳米纤维仍然是一项重大挑战。在此，引入了一种新方法，通过结合溶液吹纺丝（SBS）和聚合物衍生陶瓷法，实现具有荷叶启发表面的二氧化硅纳米纤维的大规模生产。基于SBS技术，以甲基倍半硅氧烷聚合物和聚甲基氢硅氧烷作为硅源，快速纺制出三种类型的前驱体纳米纤维产品。SBS纺制的硅基陶瓷纳米纤维的流速提高到了20 mL·h。此外，通过将疏水亲油的二氧化硅纳米颗粒整合到前驱体溶液中，制备出具有荷叶纳米突起表面的二氧化硅纳米纤维。纳米颗粒修饰的二氧化硅纤维表现出优异的疏水性（138.3°）、压缩回弹性（约60%）、对有机污染物的吸附能力、耐高温性（约1100°C）以及出色的隔热性能（热导率为0.0165 W·(m·K)）。
