Cao Shengbin, Dong Ting, Xu Guangbiao, Wang Fumei
a College of Textiles, Donghua University , Shanghai , People's Republic of China.
b School of Mechanical Engineering, Shanghai Dianji University , Shanghai , People's Republic of China.
Environ Technol. 2016 Dec;37(24):3193-9. doi: 10.1080/09593330.2016.1181111. Epub 2016 May 23.
Cattail fiber is considered as one of the biomasses for oil sorption purposes. In this work, the unique structure and wetting characteristic, as well as the basic mechanisms governing oil uptake of cattail fibers were investigated. Cattail fibers grow in tufts with down-like structure consisting of root, stem, seed and several fibers. A single cattail fiber was bamboo-shaped exhibiting 4-dimensional open spaces with fineness varying between 10 and 17.5 μm, average length at 7.9 ± 1.2 mm. The skeleton of the fiber consists of lignocellulose coated by a hydrophobic wax coating with 45.41% of crystallinity. The exceptional chemical, physical and microstructural properties enable the cattail fiber to be highly hydrophobic and oleophilic. The water droplets could stand on the fibers' surfaces with the contact angles more than 130°, while oil droplets disappear quickly from the fibers' surfaces within several seconds. When used as the sorbent for oil, cattail fibers were found to absorb about 12 g of oil per gram of fibers and retained over 88% of absorbed oil even after 24 h dripping. The unique structure of cattail fibers played an important role in oil sorption. The result proposed that cattail fibers are a promising natural source for the production of oil absorbents.
香蒲纤维被认为是用于吸油目的的生物质之一。在这项工作中，研究了香蒲纤维独特的结构和润湿性，以及控制其吸油的基本机制。香蒲纤维成簇生长，具有由根、茎、种子和几根纤维组成的绒毛状结构。单根香蒲纤维呈竹形，具有四维开放空间，细度在10至17.5μm之间变化，平均长度为7.9±1.2mm。纤维的骨架由木质纤维素组成，表面覆盖有疏水性蜡涂层，结晶度为45.41%。香蒲纤维特殊的化学、物理和微观结构特性使其具有高度的疏水性和亲油性。水滴可以以接触角大于130°的状态停留在纤维表面，而油滴在几秒钟内就会迅速从纤维表面消失。当用作油的吸附剂时，发现香蒲纤维每克纤维可吸收约12g油，即使在滴油24小时后仍保留超过88%的吸收油。香蒲纤维独特的结构在吸油过程中起了重要作用。结果表明，香蒲纤维是生产吸油剂的一种有前途的天然来源。
