The composites of poly lactic acid (PLA) filled with milled glass fibers (MGF) were prepared via molten blending and compression molding. The effects of MGF contents on the morphology, mechanical properties and melt flow rate of MGF/PLA composites were investigated. The results show that well dispersed MGF were coated by silane coupling agent in matrix, and improved interfacial adhesion between the PLA and MGF was observed. With the increase of MGF, the tensile strength was decreased, and the Young′s modulus exhibited the trend of continuous increase. However, the elongation at break of MGF/PLA composites was increased first and then declined. The MGF led to positive influence on the hardness, but brought on a remarkable negative impact on the melt flow rate of MGF/PLA composites.
【2】NAMPOOTHIRI K M, NAIR N R, JOHN R P. An overview of the recent developments in polylactide (PLA) research [J].Bioresource Technology, 2010, 101(22): 8493-8501.
【3】YU T, LI Y, REN J. Preparation and properties of short natural fiber reinforced poly(lactic acid) composites[J].Transactions of Nonferrous Metals Society of China, 2009, 19(s3): s651-s655.
【4】HUDA M S, DRZAL L T, MOHANTY A K, et al. Effect of fiber surface-treatments on the properties of laminated biocomposites from poly(lactic acid) (PLA) and kenaf [J].Composites Science and Technology, 2008, 68(2): 424-432.
【6】OROZCO V H, KOZLOVSKAYA V, KHARLAMPIEVA E, et al. Biodegradable self-reporting nanocomposite films of poly(lactic acid) nanoparticles engineered by layer-by-layer assembly [J].Polymer, 2010, 51(18): 4127-4139.
【7】FUKUSHIMA K, ABBATE C, TABUANI D, et al. Biodegradation of poly(lactic acid) and its nano-composites [J].Polymer Degradation and Stability, 2009, 94(10): 1646-1655.
【8】ZHAO Y Q, LAU K T, KIM J, et al. Nanodiamond/poly (lactic acid) nanocomposites: effect of nanodiamond on structure and properties of poly (lactic acid) [J].Composites: Part B, 2010, 41(8): 646-653.
【9】HUDA M S, DRZAL L T, MOHANTY A K, et al. Chopped glass and recycled newspaper as reinforcement fibers in injection molded poly(lactic acid) (PLA) composites: A comparative study[J]. Composites Science and Technology, 2006, 66(11/12): 1813-1824.