Key Laboratory of Eco-Textile, Ministry of Education, School of Textiles and Clothing, Jiangnan University, Wuxi 214122, China.
Key Laboratory of Eco-Textile, Ministry of Education, School of Textiles and Clothing, Jiangnan University, Wuxi 214122, China.
J Colloid Interface Sci. 2020 Apr 15;566:401-410. doi: 10.1016/j.jcis.2020.01.106. Epub 2020 Jan 30.
Exploiting water-based fabric coatings outfitted with multiple protections (e.g., waterproofness, ultraviolet (UV) resistance and thermal insulation) are urgently demanded. Nevertheless, achieving the multifunction and durability poses the major challenge. In the present study, novel multifunctional cellulose/silica hybrid microcapsules were developed by one-step emulsion-solvent diffusion; these microcapsules were well dispersed into waterborne silicone resins to form waterborne multiple protective fabric coatings. Since the encapsulated phase change materials were in the core of capsules, and the hydrophobic coupling reagent and UV absorber were grafted onto the silicas in the shell of capsules, these fabric coatings exhibited high superhydrophobicity, UV protection and thermal insulation. Moreover, because hydrophobic coupling reagent and UV absorber in the shell-cellulose of capsules exhibited easy mobility, the fabric coatings displayed self-repairability of superhydrophobicity and UV protection even after being damaged chemically or mechanically. The fabric coating presented in this study could have a range of applications, covering special protective fabric, high-altitude garments as well as self-cleaning materials.
迫切需要开发具有多种保护功能（例如防水性、耐紫外线（UV）和隔热性）的基于水的织物涂层。然而，实现多功能性和耐久性是主要挑战。在本研究中，通过一步乳液-溶剂扩散法开发了新型多功能纤维素/二氧化硅杂化微胶囊，这些微胶囊很好地分散在水性硅树脂中，形成了水性多重防护织物涂层。由于封装的相变材料位于胶囊的核心，而疏水性偶联剂和紫外线吸收剂则接枝在胶囊壳中的二氧化硅上，因此这些织物涂层表现出高超疏水性、UV 保护和隔热性。此外，由于胶囊壳中的疏水性偶联剂和紫外线吸收剂在胶囊-纤维素中具有易移动性，即使在化学或机械损坏后，织物涂层也表现出超疏水性和 UV 保护的自修复性。本研究中提出的织物涂层具有广泛的应用，涵盖特殊防护织物、高空服装以及自清洁材料。
