The Effects of Kaolin/PESF Ratios on the Microstructures of Kaolin Hollow Tubes
The effects of kaolin/polyethersulfone (PESf) (k/p) ratios on the microstructures of kaolin hollow tubes have been investigated. Kaolin suspension containing k/p ratios between 1 and 3.5 was used to spin kaolin hollow-tube precursors via a dry-jet wet spinning method at 0-cm air gap. The cross-sectional microstructures of the kaolin hollow-tube precursors were investigated using scanning electron microscopy (SEM). The results show that, at k/p ratios of 1.0, 1.5 and 2.5 (low viscosity) and k/p ratios of 3.0 and 3.5 (high viscosity), the finger like voids dominated the outer regions and inner regions of the cross sections of the kaolin hollow tubes, respectively.
KeywordsClay TiO2 Filtration Agglomeration Kaolin
The authors would like to thank the Universiti Malaysia Sabah and the Ministry of Science Technology and Innovation, Malaysia, for the usage of facilities and funding this research, respectively.
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