With a vane extruder

poly(butylenes succinate) (PBS)/lignin biocomposites were prepared.The effects of vane extruder processing temperature (130

135

140

145 ℃) and rotating speed (10

20

30

40 r/min) on residence time

apparent quality and mechanical properties of composites were investigated

as well as the morphology properties with scanning electron microscope (SEM).The results showed that the residence time of materials gradually decreased with the rising of rotating speed

as well as the rising of processing temperature; the apparent quality of composites slightly changed with the rising of processing temperature

but dramatically changed with the rising of rotating speed; the mechanical properties of composites also slightly changed with the rising of processing temperature

but each mechanical property of composites had a different effect of the rising of rotating speed.In addition

the morphology of composites fracture sections slightly changed with different processing temperatures

but significantly changed with processing rotating speed.These results were related to the structural and conveying characteristics of the vane extruder

positive displacement conveying and plastic energy dissipation of materials are generated in elongational flow

which improve the efficiency of mass transfer and strengthen the mechanism of interaction between components of composites.For the performance and economic costs of the PBS/lignin composites

the susgested processing conditions of vane extruder are as follows

the segments temperatures of vane extruder are 115

125

135

125 ℃ and the rotating speed is 20 r/min.