《Table 3 Thermal characteristics of the PLA and PLA/CNF composite nanofiber obtained from the second

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《"Morphological, Mechanical and Thermal Properties of Poly(lactic acid)(PLA)/Cellulose Nanofibrils(CNF) Composites Nanofiber for Tissue Engineering"》

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The viscosity and conductivity of the electrospinning solution have very important influence on the morphology of the fabricated nanofibers membranes.The viscosity and conductivity of the prepared PLA/CNF composite solution with various CNF loading are shown in Table 1.The measurements reveal that the conductivity of the electrospinning solution increased from 0.75 to 4.76μS/cm for neat PLA and PLA/CNF3（3%CNF loading）solution，respectively.This observed increase in the conductivity at the low-level concentration of CNF（3%）can be attributed to the good conductivity property of CNF.On the contrary，compared with PLA/CNF3 solution，there was a decrease in the conductivity of the PCL/CNF solution with further increase of CNF loading.This is because，as the CNF concentration further increased，the likelihood of CNF aggregation is expected to increase，and thus the effect of the conductivity property of CNF on the PLA/CNF solution was offset by its poor dispersion.Noteworthy，the conductivity of all the PLA/CNF solutions were larger than that of the neat PCL solution.Additionally，the viscosity of all the PLA/CNF solutions prepared at different CNF content are very similar to that of the neat PLA solution，which indicates that CNF has no pronounced effect on the viscosity of the electrospun solution.