Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8917119 | South African Journal of Chemical Engineering | 2017 | 35 Pages |
Abstract
This paper focuses on investigating the effect of alkali treatments on the bond characteristics of date palm fibers (DPFs) in a polyurethane (PU) matrix, including the bond strength, pullout energy. This kind of fiber treatment is generally used to improve the mechanical behavior of composites. Raw DPFs underwent a surface modification method by alkali treatment with different percentages of NaOH: 0Â wt%, 2Â wt%, 5Â wt% and 10Â wt%. All treatments were carried out under mild conditions without heating for 1Â h. The Fourier transform infrared spectroscopy (FTIR), tensile properties, surface morphology and thermal gravimetry analysis (TGA) of treated DPFs were investigated. The experimental results showed that the alkali treatment can effectively remove non cellulosic materials and enhance the tensile strength of DPFs. In order to investigate on DPF-PU adhesion, the fiber pullout test was also carried out. It was found that the DPF-PU interfacial properties increased after the alkali treatment, especially fiber pullout energy. Indeed the optimal alkali concentration was reported at 5Â wt% in terms of the bond characteristics, and, this is mainly due to the reduction of the amorphous parts of the fibers.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
A. Oushabi, S. Sair, F. Oudrhiri Hassani, Y. Abboud, O. Tanane, A. El Bouari,