A comparative study for oil-absorbing performance of octadecyltrichlorosilane treated Calotropis gigantea fiber and kapok fiber
- 551 Downloads
A hydrophobic layer was formed on smooth surfaces of Calotropis gigantea fiber (CGF) and kapok fiber (KF) by adsorption of octadecyltrichlorosilane (OTS) from a toluene solution and then a comparative study was carried out on the basis of various characterizations and oil-absorbing performances for the two natural plant fibers. The resulting OTS-CGF and OTS-KF exhibit outstanding hydrophobic–oleophilic property and an enhancement in the oil-absorbing capacity for engine oil, soybean oil and kerosene. Moreover, the fibers can be utilized for rapid and selective removal of oil spills on the water surface. Compared to KF, CGF seems to be acid-resistant during the hydrolysis process of OTS, with the result that the oil-absorbing capacity exhibits no significant decrease after ten cycles. Eventually, CGF-based material can be further developed for oil–water separation, demonstrating its potential as a promising alternative for treatment of oil-containing wastewaters.
KeywordsCalotropis gigantea fiber Kapok fiber Octadecyltrichlorosilane Oil-absorbing performance Oil–water separation
The authors thank for the joint support of the National Natural Science Foundation of China (No. 21477135), the Fundamental Research Funds for the Central Universities (No. lzujbky-2015-127), and the Hui-Chun Chin and Tsung-Dao Lee Chinese Undergraduate Research Endowment (No. JZH0028).
Supplementary material 2 (MOV 1325 kb)
Supplementary material 3 (MOV 857 kb)
- Babu ARS, Karki SS (2011) Anti-convulsant activity of various extracts of leaves of Calotropis gigantea Linn against seizure induced models. Int J Pharm Pharm Sci 3:200–203Google Scholar
- Dong T, Wang F, Xu G (2015c) Sorption kinetics and mechanism of various oils into kapok assembly. Ind Crop Prod 91:230–237Google Scholar
- Hui B, Li Y, Huang Q, Li G, Li J, Cai L, Yu H (2015a) Fabrication of smart coatings based on wood substrates with photoresponsive behavior and hydrophobic performance. Mater Des 84:277–284Google Scholar