The tensile test of the Polylactic acid/CSR and the toughened
Polylactic acid/rubber wood composites was conducted according
to ASTM D 638 by a Universal Testing Machine
(INSTRON, 5567). The dimension of each dumbbell test
specimen is 165 mm×13 mm×3 mm, the gauge length is
25 mm. The tensile test was performed at a crossheadspeed of 5 mm·min−1 and a pre-load of 5 N. Rectangular
specimens with length of 96.0 mm, width of 12.7 mm and
thickness of 3.0 mm were also injected for the flexural
test. A three-point bending test with a support span of
48 mm was carried out at room temperature by a Universal
Testing Machine (INSTRON, 5567) and following
the procedure of ASTM D790. The crosshead speed was
set at 1.2 cm·min−1. The impact test was conducted using
an Izod impact tester (Yasuda, 190) following the procedure
of ASTM D256. All of the impact test specimens
were notched at an angle of 45°. All of the tensile, the
flexural and the impact properties were averaged from
the results obtained from five tested samples