2.4.1. Melt flow index measurement
Melt flow index (MFI) ofthe samples was measured according to
ASTM 1238-10, with a slight modification. The measurement was
performed using an MFI-2 (Custom Scientific Instruments, USA) at
190 ◦C with a load cell of 3.2 kg, a preheating time of 7 min and
a time interval of 6 min. MFI was measured in triplicate for each
sample and reported in g/10 min as mean ± SD (n = 3).