Using chitosan as a thickener for electrospinning dilute PVA solutions to improve fibre uniformity
Lin, Tong, Fang, Jian, Wang, Hongxia, Cheng, Tong and Wang, Xungai 2006, Using chitosan as a thickener for electrospinning dilute PVA solutions to improve fibre uniformity, Nanotechnology, vol. 17, pp. 3718-3723.
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Chitosan was added to PVA aqueous solutions as a thickener to improve the electrospinning process. The presence of a small amount of chitosan considerably improved the uniformity of as-spun nanofibres. This improvement is attributed to its significant effect on the solution viscosity and conductivity, with only a slight impact on the surface tension. The concentration of the PVA required to produce bead-free and uniform nanofibres was reduced with the increase in chitosan concentration. The chitosan thickener suppressed the jet break-up and facilitated the jet stretching so that fine and uniform fibres could be electrospun even from a dilute PVA solution.
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