Physical Structure Induced Hydrophobicity Analyzed from Electrospinning and Coating Polyvinyl Butyral Films

Table 1

The SWCA of the prepared PVB films by different methods.

Methods		SWCA (°)	SWCA (°)	SWCA (°)	ASWCA (°)
Concentrations/parameters		8 wt%	10 wt%	12 wt%
Spin-coating	250 r/s	77.767	78.800	78.900	78.593
	300 r/s	74.300	82.600	79.933
	350 r/s	76.033	82.733	76.267
Bar-coating	6 μm	86.438	83.297	84.303	83.067
	8 μm	81.255	82.626	81.437
	10 μm	81.093	81.360	85.796
Positive electrospinning	15 cm	135.833	130.833	131.933	132.404
	20 cm	132.167	133.600	129.700
	25 cm	131.667	135.400	130.500
Negative electrospinning	15 cm	131.033	135.733	130.867	131.615
	20 cm	128.633	135.100	133.367
	25 cm	128.300	133.233	128.267