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. 2024 Jan 8;16(2):183. doi: 10.3390/polym16020183

Figure 10.

Figure 10

SEM images showing the effect of individual factors on the bead-to-fiber ratio. (a) Low shellac content (35% w/w) with 1% w/w extract content at 16.5 kV and 0.8 mL/h; (b) high shellac content (45% w/w) with 1% w/w extract content at 16.5 kV and 0.8 mL/h; (c) low extract content (1% w/w) with 40% w/w shellac content at 16.5 kV and 0.4 mL/h; (d) high extract content (4% w/w) with 40% w/w shellac content at 16.5 kV and 0.4 mL/h; (e) low voltage (9 kV) with shellac-to-extract ratio (40:2.5) at 0.4 mL/h; and (f) high voltage (24 kV) with shellac-to-extract ratio (40:2.5) at 0.4 mL/h.