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Chitosan PEO nano-fibres depicting the effects of acetic acid concentration, (a) 2:3 CH:PEO in 45% (b) 4:9 CH:PEO in 36%; (c) 2:3 CH:PEO with 2.5 wt.% total polymer 40%; (d) 4:9 CH:PEO with 2.6 wt.% total polymer 32%; (e) 2:3 CH:PEO with 3 wt.% total polymer blend and 32%; (f) 8:9 CH:PEO with 3.4 wt.% total polymer 32% of total acetic acid concentration [59]; scale bar represents 1 μm (Adapted with permission from publisher).
