Thermal characteristics of chitosan dispersed poly lactic acid/basalt hybrid composites
This paper focuses on reinforcing poly lactic acid with chitosan nano particles and silane treated basalt fiber. poly lactic acid (PLA) composites with different weight percentage of chitosan (CS) and basalt fiber (BF) were intermixed under high pressure and shear deformation by solid-state reactive blending in twin screw extruder and injection moulding technique. Low glass transition temperatures are maintained throughout the process (below the melting points of the crystalline polymers) to minimizing oxidative degradation of the polymer and fiber. The thermal properties of injected molded composites were extensively examined by differential scanning Calorimetry, thermo gravimetric analysis, and dynamic mechanical analysis. It was found that the increased weight percentage of basalt fibers and chitosan nano particles are very effective in reinforcing poly lactic acid. It is demonstrated in this paper basalt fiber and chitosan were to be will incorporated and uniformly distributed using Scanning electron microscopy. The optimum weight percentage of basalt fiber and chitosan in poly lactic acid composites was found to be 25 wt% and 10 wt% respectively.
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Document Type: Research Article
Publication date: August 1, 2016
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