Table 2: Experimental values of surface tension in mN/m for the polymer solutions and solvents (23°C, 43% RH).

Polymer solution (6% wt) (mN/m)Solvent (mN/m)

PLA50.0Chloroform27.8
PEO42.9Dichloromethane28.6
PCL51.0Acetone25.6
Chloroform : acetone 3 : 1 (v/v)26.7