College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China.
College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China; Yibin Forestry and Bamboo Industry Research Institute, Yibin, 644000, China.
Carbohydr Res. 2022 Jan;511:108488. doi: 10.1016/j.carres.2021.108488. Epub 2021 Dec 1.
First time aerogels composite with super hydrophobic properties were developed by using tunicate cellulose nanocrystals (TCNC), which expanded the application scope of animal cellulose resources. In this study, the TCNC was firstly cross-linked with silica and methyltrimethylsilane (MTMS), further coated with fluorodopa to form an aerogel with super hydrophobic properties. The aerogel was characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectra (FT-IR), and X-ray photoelectron spectroscopy (XPS). Results indicated that the contact angle of aerogel was 158.7°, which showed good hydrophobicity. The composite aerogel has superior stability in wide pH range, after 72 h immersion in pH = 0 and 12 solutions, the contact angle was still greater than 150°. The aerogel shows excellent oil-water separation ability and it can be repeatedly used more than 10 times. The separation efficiency can all reach more than 90% for different water-oil mixtures. This synthesized super hydrophobic aerogels derived from tunicate cellulose has greatly extended the application of marine animal celluloses.
首次开发出具有超疏水性能的水螅纤维素纳米晶体（TCNC）气凝胶复合材料，拓展了动物纤维素资源的应用范围。本研究首先将 TCNC 与硅烷和甲基三甲硅烷（MTMS）交联，进一步用氟多巴包覆，形成具有超疏水性能的气凝胶。通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、傅里叶变换红外光谱（FT-IR）和 X 射线光电子能谱（XPS）对气凝胶进行了表征。结果表明，气凝胶的接触角为 158.7°，具有良好的疏水性。该复合气凝胶在较宽的 pH 值范围内具有优异的稳定性，在 pH=0 和 12 的溶液中浸泡 72 h 后，接触角仍大于 150°。气凝胶具有优异的油水分离能力，可重复使用 10 多次以上。对于不同的油水混合物，分离效率均能达到 90%以上。这种源自水螅纤维素的合成超疏水气凝胶极大地拓展了海洋动物纤维素的应用。
