Effects of Different Pretreatments of Wood Fiber on Mechanical Properties of Biodegradable Composite
Biodegradable composites of polylactic acid reinforced with wood fiber were fabricated by using twin screw extruder followed by the injection molding machine. The effects of different pretreatments of wood on mechanical properties of the biodegradable composite were discussed. The nature of composites were also examined through scanning electron microscope and Infrared Spectrum Analysis, the results reveal that both acid and stearic acid could be used as effective surface modifier for wood fiber/polylactic acid system, the composite system by adding Benzoic acid, the tensile strength has improved greatly, and about stearic acid composite system, the impact strength has improved significantly; After alkali treatment, coupling agent treatment and combination of alkali treatment and coupling agent treatment, and the use of alkali treatment and the coupling agent treatment is the best, follow by alkali treatment.
Jinglong Bu, Zhengyi Jiang and Sihai Jiao
Y. Q. Wu et al., "Effects of Different Pretreatments of Wood Fiber on Mechanical Properties of Biodegradable Composite", Advanced Materials Research, Vols. 150-151, pp. 1438-1443, 2011