Abstract
Polylactic acid (PLA) fine fibers and multi walled carbon nanotube (MWCNT) reinforced PLA fine fiber composites were developed utilizing a centrifugal spinning process. Chloroform and chloroform combined with dimethylformamide (DMF) were used to prepare solutions with varying concentrations of PLA and MWCNTs. The optimum spinning conditions to produce PLA fibers and its composites were determined. The morphology of the fibers was analyzed using scanning electron microscopy. In addition, X-ray diffraction analysis and thermo-physical characterization was conducted using thermogravimetric analysis and differential scanning calorimetry. PLA fibers with an average diameter of 481 nanometers and PLA/MWCNT fibers with an average diameter of 358 nanometers were obtained. A decrease in the crystallinity of the fibers was observed when compared to bulk PLA values.
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