Department of Pretreatment and Finishing of Cellulosic Fibers, Textile Research Division and ‡Applied Organic Chemistry Department, Chemical Industries Research Division, National Research Centre , Scopus affiliation Idaho 60014618, 33 EL Buhouth Street, Dokki, Giza 12622, Egypt.
ACS Appl Mater Interfaces. 2017 Aug 23;9(33):28034-28045. doi: 10.1021/acsami.7b07357. Epub 2017 Aug 14.
Protective textiles against harmful solar radiation are quite important materials for outdoor workers to secure their skin from several diseases. Current report focuses on production of anti-ultraviolet radiation (UVR) textiles by incorporation of nano-metal-organic frameworks (n-MOFs). Two different MIL-MOFs, namely, MIL-68(In)-NH and MIL-125(Ti)-NH, were immediately formed inside natural textiles (cotton and silk) matrix in nano size using quite simple and one-pot process. The formation of n-MIL-MOFs inside textiles were confirmed by using electron microscope and X-ray diffraction. Different size and morphology were seen depending on textile type reflecting the textiles' chemical composition role in the nature of prepared MIL-MOFs. For MIL-68(In)-NH, particles with size distribution of 70.6-44.5 nm in cotton and 81.3-52.2 nm in silk were detected, while crystalline disc of MIL-125(Ti)-NH was clearly seen inside textiles. The natural textiles exhibited full UVR blocking after modification, and the UV protection factor (UPF) was linearly proportional with MIL-MOFs and metal contents. Whatever metal type, direct incorporation of MIL-MOF contents greater than or equal to 10.4 g/kg was sufficient to attain excellent UV blocking property. Although 38.5-41.0% of MIL-MOFs was lost during five washings, the washed samples showed very good blocking rate (UPF = 26.7-36.2) supporting good laundering durability.
防护纺织品可有效阻挡有害的太阳辐射，是户外工作者保护皮肤免受多种疾病侵害的重要材料。本报告重点介绍了通过纳米金属有机骨架（n-MOFs）的掺入来生产抗紫外线辐射（UVR）纺织品的方法。两种不同的 MIL-MOFs，即 MIL-68(In)-NH 和 MIL-125(Ti)-NH，立即在天然纺织品（棉和丝）基质中以纳米尺寸形成，采用非常简单的一锅法。通过电子显微镜和 X 射线衍射证实了 n-MIL-MOFs 在纺织品中的形成。根据纺织品的类型，观察到不同的尺寸和形态，这反映了纺织品在制备 MIL-MOFs 中的化学组成作用。对于 MIL-68(In)-NH，在棉中检测到粒径分布为 70.6-44.5nm 的颗粒，在丝中检测到粒径分布为 81.3-52.2nm 的颗粒，而 MIL-125(Ti)-NH 的结晶圆盘则清晰可见于纺织品内部。经过修饰后，天然纺织品具有完全的 UVR 阻挡性能，且紫外线防护因子（UPF）与 MIL-MOFs 和金属含量呈线性关系。无论金属类型如何，只要直接掺入 MIL-MOF 含量大于或等于 10.4g/kg，即可获得优异的紫外线阻挡性能。尽管经过五次洗涤后，有 38.5-41.0%的 MIL-MOFs 损失，但经过洗涤的样品仍表现出非常好的阻挡率（UPF=26.7-36.2），这表明其具有良好的耐洗性。
