สมบัติของวัสดุผสมพอลิแลคติกแอซิดกับผงถ่านไม้ไผ่

Abstract

This research is to study feasibility of fiber forming and their properties using bamboo charcoal polylactic polymer compounds. The materials used in the experiments are polylactic virgin (PLA), bamboo-charcoal polylactic compounds ( bamboo-charcoal PLA), and compatibilizer polylactic compounds (PE-g-MA PLA). The compound ratio between the three materials were altered to conduct 13 experiments to study feasibility of their fiber forming using single screw extruder machine with 24-holes spinneret, screw speed 8 rpm, temperature at 230°C, and winding speed 400 m/min. The polymer compound that had the highest persistence extrusion is the PLA polymer compound with 1.0% of bamboo-charcoal. The fiber extrusion from the PLA polymer compounds with 3.0% of bamboo-charcoal had tendency to break after a few minute of the production. The PLA polymer compound with 5.0% of bamboo-charcoal faced difficulty of fiber breaking soon after emerge from the spinneret. The compound fiber with the highest tensile strength property, 30 MPa, is the fiber with 1.0% bamboo charcoal and 1.5% PE-g-MA, due to the least percentage of bamboo-charcoal and the highest percentage of the compitibilizer. The compound fiber with the highest sonic modulus, 1.92Km/sec is the fiber with 5.0% bamboo charcoal and 1.5% PE-g-MA, due to bamboo-charcoal particles that thoroughly scattered in the fibers. On the other hand, the compound fiber with 5.0% bamboo charcoal and 1.5% PE-g-MA has the lowest moisture content, 0.37% by weight. The assumption of this research was to product the compound fiber with the highest feasibility and adequate properties, therefore, the fiber with 1.0% bamboo charcoal and 1.5% PE-g-MA is the most practicable.