Abstract
Thermoplastic cassava starch films were synthesized using native cassava starch plasticized with glycerol and cardanol-based plasticizers at 70:30, 80:20, and 90:10 ratios. Cardanol-based plasticizers were cardanol, epoxidized cardanol, and cardanol polyol. The effectiveness of the synthesis of epoxidized cardanol and cardanol polyol was assessed by Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (NMR) spectroscopy. The starch bioplastics were extruded in 3 mm filaments and characterized by tensile testing, water absorption, humidity and thermogravimetric analysis. Results showed a strong effect of the concentration of cardanol-based co-plasticizers on the mechanical properties with 20-fold increase in modulus, 4-fold increase in tensile strength, and half decrease in elongation. The moisture content was also significantly decreased in increasing co-plasticizer content. SEM micrographs showed a good compatibility, but also some voids. No significant difference, however, was observed for the water absorption properties. Thermal resistance was also improved for cardanol and epoxidized cardanol films.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
