Characterization of licorice root waste for prospective use as filler in more eco-friendly composite materials
| Autor: | Debora Puglia, Marco Rallini, Serena Gabrielli, Luigi Torre, Enrico Marcantoni, Carlo Santulli |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
mechanical characterization Materials science licorice waste Future application lignin-based composite Bioengineering 02 engineering and technology filler morphology lcsh:Chemical technology 01 natural sciences lcsh:Chemistry chemistry.chemical_compound Flexural strength 010608 biotechnology Chemical Engineering (miscellaneous) lcsh:TP1-1185 Composite material Ball mill chemistry.chemical_classification Process Chemistry and Technology thermal characterization Polymer Epoxy matrix Compatibilization 021001 nanoscience & nanotechnology Environmentally friendly Thermogravimetry chemistry lcsh:QD1-999 0210 nano-technology |
| Zdroj: | Processes, Vol 8, Iss 733, p 733 (2020) Processes Volume 8 Issue 6 |
| Popis: | The extraction of glycyrrhizin from licorice root and stolon with ethanol/water solutions leaves a lignocellulosic residue, which could be potentially applied in biocomposites. This process proved difficult in principle, given the considerable hardness of this material as received, which impedes its use in polymer resins in large amounts. After ball milling, up to 10% of this fibrous residue, which shows very variable aspect ratio, was introduced into an epoxy matrix, to investigate its possible future application in sustainable polymers. Of the three composites investigated, containing 1, 5 and 10 wt% of licorice waste, respectively, by performing flexural testing, it was found that the introduction of an intermediate amount of filler proved the most suitable for possible development. Thermal characterization by thermogravimetry (TGA) did not indicate large variation of degradation properties due to the introduction of the filler. Despite the preliminary characteristics of this study, an acceptable resin-filler interface has been obtained for all filler contents. Issues to be solved in future study would be the possibility to include a larger amount of filler by better compatibilization and a more uniform distribution of the filler, considering their orientation, since most of it maintains an elongated geometry after ball milling. |
| Databáze: | OpenAIRE |
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