Comparison between the Needle and Roller Electrospinning of Polyvinylbutyral

Table 2

Conductivity and surface tension of PVB polymer solutions at different concentrations.

	6%	7%	8%	9%	10%
Surface tension (mN/m)	23.1	23	22.3	22.4	22.3
Conductivity (μS·cm^−1)	1.92	2.32	2.4	2.1	2.22