Tensile Strength
Tensile strength of the films with size of 3 20mm
was measured using tension meter (FGS-50V-L,
SHIMPO Co., Ltd) with following conditions: elongation
speed, 20 mm/min.; humidity, 60%; temperature,
20 C. Out of six measurements for the same sample,
expect for the highest and lowest ones, the values of
four measurements were averaged.