Fig. 1.
Normality test and test of homogeneity of variances
| Diameter | Flow rate | Kolmogorov Simirnov statistic | df | Sig. |
| 0.5 ml/hr | 0.96 | 120 | 0.09 | |
| 1 ml/hr | 0.94 | 120 | 0.14 | |
| 1.5 ml/hr | 0.94 | 120 | 0.20 | |
| Test of homogeneity of variances | ||||
| Diameter | Levene statistic | df | Sig. | |
| 0.56 | 358 | 0.89 | ||
t-test results
| Group | N | Mean | Standard Deviation | t | df | Sig. |
|---|---|---|---|---|---|---|
| 20G | 120 | 456.054 | 13.67 | 4.320 | 238 | 0.001 |
| 22G | 120 | 435.287 | 15.44 |
Histogram graphs of nanofibers obtained with different diameter needles
| Needle | Histogram graphs |
|---|---|
| 20G | |
| 22G |
Experimental parameters
| Distance between electrodes | 20 cm |
| Voltage amount | 20 kV |
| Needle diameter | 22G |
| Metal collector material | Copper |
| Metal collector thickness | 10 mm |
| Metal collector shape | Circle (10 cm diameter) |
| Flow rate | 0.5-1-1.5 ml/hr |
Histogram graps of nanofibers obtained at different flow rates
| Flow rate | Histogram graphs |
|---|---|
| 0.5 ml/hr | |
| 1 ml/hr | |
| 1.5 ml/hr |
SEM images and appearance on the paper surface
| Flow rate | 0.5 ml/hr | 1 ml/hr | 1.5 ml/hr |
|---|---|---|---|
| SEM | |||
| Appearance on the paper surface |
Analysis of variance and Tukey test results
| One-Way Anova | Sum of squares | df | Mean squared | F | Sig. | |
| Between groups | 45950.16 | 2 | 22975.08 | 175.93 | 0.000 | |
| Within groups | 46620.39 | 357 | 130.59 | |||
| Total | 92570.54 | 359 | ||||
| (I) Flow rate | (J) Flow rate | Average difference (I-J) | Sig. | |||
| Tukey test | 0.5 ml/hour | 1 ml/hour | -11.97 | 0.000 | ||
| 1.5 ml/hour | -27.59 | 0.000 | ||||
| 1 ml/hour | 0.5 ml/hour | 11.97 | 0.000 | |||
| 1.5 ml/hour | -15.62 | 0.000 | ||||
| 1.5 ml/hour | 0.5 ml/hour | 27.59 | 0.000 | |||
| 1 ml/hour | 15.62 | 0.000 | ||||