Open AccessKapok fibre as potential oil-absorbing material: Modification mechanism and performance evaluation
Author(s) -
Graecia Lugito,
Arip Kustiana,
Reyhant Martuani,
I Gede Wenten
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/823/1/012033
Subject(s) - sorption , coating , ceiba , chemical engineering , reusability , materials science , absorption capacity , composite material , chemistry , pulp and paper industry , organic chemistry , adsorption , computer science , engineering , ecology , software , biology , programming language
Kapok fibre has gained considerable attention as a potential oil-absorbing material due to its lipophilicity, hydrophobicity, and configuration of its central lumen which is the key component of its high oil absorption capacity. However, the weak structural integrity of the fibre greatly retards its application. This study aims to develop a reinforcement method for kapok ( Ceiba pentandra ) fibre to enhance its reusability and oil recovery. Oil-sorption capacities of several modified kapok fibres have been evaluated to resolve the oil-polluted water issues. Oxidation using sodium chlorite (NaClO2) followed by sol-gel coating with tetraethylorthosilicate (TEOS) and sponge formation via freeze-drying method successfully enhance the structural integrity of the fibre without significantly reduce its hydrophobicity. Further coating the sponge with dodecyltrimethoxysilane (DTMS) using the chemical vapor disposition method results in superhydrophobic fibre. The best performance achieves an oil-sorption capacity of 48.6 g-oil/g-fibre and can maintain 62.6% of its oil-sorption capacity even after ten reuse cycles.