3.2. Dynamic-mechanical analysis (DMA)
The storage modulus, loss modulus and tan delta of the test
specimens were evaluated using DMAQ800 supplied by TA Instruments.
The specimens were heated from 30 to 125 C with a
heating rate of 2 C/min. Single cantilever mode was used to test
the specimens at an oscillating amplitude of 15 lm and a frequency
of 1 Hz.