PLA electrospun nanofibres mechanical properties

Chen et aZ. obtained fibres by using a rotating cylinder as collector at a line speed of 18 m min , with flow-rate 0.1 mL h , 10 kV of voltage and a distance between the needle and the cylinder about 100 mm. They obtained 

Treatment method Average fibre Breaking diameter (pm) strain (%) Tenacity (MPa) Ball piercing force (N) 

150 mm. The annealing treatment strongly influences the mechanical behaviour of the PLLA mats, even if it is not affected by the average diameter of the electrospun fibres. 

Finally, the mechanical properties of PLA-electrospun mats obtained by using different solvents were studied by Liao et al In particular, fibres obtained from a solution of PLA and chloroform (CHCI3) were prepared by using a collector disc with a centrifugal field of 1800 rpm. The experimental conditions used in this case, indicated with (a) in Table 6.4, are voltage 15 kV, flow-rate 0.25 mL h and distance between the needle and the cylinder 200 mm. Other samples, indicated with [h] in Table 6.4, were obtained from a PLA solution with a solvents mixture and a collector disc with centrifugal field 1800 rpm, flow-rate 0.25 mL h , 30 kV and distance between the needle and the cylinder 200 mm. From these results, it is worthwhile to note that the solvent and its evaporation rate strongly influence the PLA-electrospun fibres behaviour. The best results were obtained when a mix of tetrahydrofuran and chloroform was used. 

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