Thermal Analysis of Micro- and Nano-Lignocellulosic Reinforced Styrene Maleic Anhydride Composite Foams |
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| Authors: | Deniz Aydemir Alper Kiziltas Douglas J Gardner Yousoo Han Gokhan Gunduz |
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| Institution: | 1. Department of Forest Products Engineering, Faculty of Forestry, University of Bartin, Bartin, Turkey;2. Advanced Structures and Composites Center, University of Maine, Orono, Maine, USA;3. Advanced Structures and Composites Center, University of Maine, Orono, Maine, USA |
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| Abstract: | The aim of this study was to measure the thermal properties of foamed nano/macro filler–reinforced styrene maleic anhydride (SMA) composites. SMA (66%) as a polymer matrix (10% maleic anhydride content) and various fillers including wood flour, starch, α-cellulose, microcrystalline cellulose and cellulose nanofibrils as reinforcing agents (30%) and lubricant (4%) were used to manufacture the composites in a twin-screw extruder. According to the thermogravimetric analysis (TGA) results, thermal degradation of all the foamed composites was found to be lower than that of SMA composites. The storage modulus values were negatively affected with a second time foaming (reprocessing recycling] the initially processed composites a second time), as were loss modulus and Tg. As a result, second-time-foamed composite modulus values were lower than those of the foamed composites. According to the melt flow index (MFI) results, viscosity of the SMA was found to increase with the addition of fillers. |
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| Keywords: | Foams Lignocellulosic fillers Thermal stability Viscoelastic properties |
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