Physicochemical and Structural Properties of Green Biofilms from Poly (Vinyl alcohol)/Nano Coconut Shell Filler
| Autor: | B. Balavairavan, S.S. Saravanakumar, K.M. Manikandan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Journal of Natural Fibers, Vol 18, Iss 12, Pp 2112-2126 (2021) |
| Druh dokumentu: | article |
| ISSN: | 1544-0478 1544-046X 15440478 |
| DOI: | 10.1080/15440478.2020.1723778 |
| Popis: | There is growing interest in recent times to develop biodegradable films with improved properties. They are potential substitutes for existing petroleum-based synthetic polymers. Eco-friendly biofilms based on Poly (vinyl alcohol)/Nano coconut shell filler (PVA/NCSF) were primed by a solution casting method. The biofilms were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis, Tensile test, FESEM, Transparency Water absorption, biodegradability test, and tensile testing. FTIR and XRD results revealed the structural characterization and crystallinity index of prepared PVA/NCSP biofilms. FTIR suggested that strong hydrogen bonding due to interfacial exchanges of PVA/NCSF. Thermogravimetric analyses revealed thermal degradation temperatures of biofilms that were observed between 259.79°C and 350°C. The tensile strength and elastic modulus were enhanced by 25.5% and 97.25%, respectively, when NCSF was added at 25 wt% level. It is intriguing that % of elongation linearly decreased with the incorporation of filler. The FESEM results evident that good compatibility between PVA and NCSF. The water absorption of PVA/NCSF biofilms slightly increases with increase in the NCSF content. Soil burial test results evident that 34% weight loss of biofilms (25 wt% of NCSF) due to NCSF loading in PVA Matrix. Taken together, the present study confirmed that PVA/NCSF biofilms can be a potential for packaging applications. |
| Databáze: | Directory of Open Access Journals |
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