Thermal Analysis of Micro and Nano Lignocellulosic Reinforced Styrene Maleic Anhydride (SMA) Composite Foams

Published: 2014

Author(s):
Aydemir, D.
Kiziltas, A.
Gardner, D. J.
Han, Y.
Gunduz, G.

Publication Name: International Journal of Polymer Analysis and Characterization

Publication URL: https://www.tandfonline.com/doi/abs/10.1080/1023666X.2015.1012792

Research Area:
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Keywords:
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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, ?-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.