, Volume 24, Issue 2, pp 989–1000 | Cite as

A comparative study for oil-absorbing performance of octadecyltrichlorosilane treated Calotropis gigantea fiber and kapok fiber

  • Yian ZhengEmail author
  • Enjuan Cao
  • Lixin Tu
  • Aiqin Wang
  • Huimin Hu
Original Paper


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.


Calotropis 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

10570_2016_1155_MOESM1_ESM.docx (4.7 mb)
Supplementary material 1 (DOCX 4863 kb)

Supplementary material 2 (MOV 1325 kb)

Supplementary material 3 (MOV 857 kb)


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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • Yian Zheng
    • 1
    • 2
    Email author
  • Enjuan Cao
    • 1
  • Lixin Tu
    • 1
  • Aiqin Wang
    • 3
  • Huimin Hu
    • 4
  1. 1.Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental SciencesLanzhou UniversityLanzhouChina
  2. 2.Zhongwei High-tech Institute of Lanzhou UniversityZhongweiChina
  3. 3.Center of Eco-materials and Green Chemistry, Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouChina
  4. 4.Shanghai Magic Tree Biotechnology Co., Ltd.ShanghaiChina

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