Abstract:Synthesis and characterization of membranes from a mixture of PVA nanocomposites and limestone hydroxyapatite have been carried out. The limestone is crushed, sieved with a size of 200 mesh. The synthesis of hydroxyapatite was carried out by heating limestone powder using a furnace at a temperature of 600 °C for 4 hours. Furthermore, limestone was dissolved with distilled water and 0.3M H3PO4 solution using a magnetic stirrer with stirring at 300 rpm for 1 hour. The pH of the solution was made 10 by adding 1 M… Show more
“…These films hold immense promise as they combine natural components to create packaging materials that are not only eco-friendly but also possess enhanced functionalities (Yulianto et al, 2023;Bukit et al, 2023). With the global call for reducing plastic waste and environmental impact, these innovative bionanocomposite films represent a crucial step towards a greener and more sustainable future for the packaging industry (Wu et al,2019; Sirait et al, 2023). Sugar palm starch and chitosan, two biopolymers with abundant availability, have emerged as prominent components in the design of bionanocomposite packaging films (Nazrin et al, 2021).…”
The packaging industry responding to growing consumer demands for product safety, seeks active packaging that allows controlled antioxidant release through incorporating anthocyanin, curcumin, cinnamaldehyde, and other polyphenolic compounds to enhance functional properties of the film antimicrobial interfacial interaction. The research focuses on exploring the impact of adding curcumin and anthocyanin to sugar palm starch/chitosan bionanocomposite films, specifically examining the release kinetics of these bioactive compounds. The biocomposite film with added curcumin exhibits a smoother surface compared to the anthocyanin-based film. Although the thermal stability of the CH/SPS matrix remains unaffected by the addition of anthocyanin and curcumin, the inclusion of these compounds significantly reduces the melting enthalpy of the CH/SPS matrix. Specifically, the addition of curcumin decreases it from 142.96 J/g to 23.43 J/g, and the addition of anthocyanin reduces it to 33.22 J/g. Anthocyanin release from the CH/SPS matrix into water conforms to the Kosmeye-Peppas model (R 2 = 0.9808, n = 0.1177), while the release kinetics of curcumin compounds adhere to the Higuchi model (R 2 = 0.9968). These findings provide advantageous insights that potentially have implications for a variety of applications, particularly in areas such as sustainable food packaging.
“…These films hold immense promise as they combine natural components to create packaging materials that are not only eco-friendly but also possess enhanced functionalities (Yulianto et al, 2023;Bukit et al, 2023). With the global call for reducing plastic waste and environmental impact, these innovative bionanocomposite films represent a crucial step towards a greener and more sustainable future for the packaging industry (Wu et al,2019; Sirait et al, 2023). Sugar palm starch and chitosan, two biopolymers with abundant availability, have emerged as prominent components in the design of bionanocomposite packaging films (Nazrin et al, 2021).…”
The packaging industry responding to growing consumer demands for product safety, seeks active packaging that allows controlled antioxidant release through incorporating anthocyanin, curcumin, cinnamaldehyde, and other polyphenolic compounds to enhance functional properties of the film antimicrobial interfacial interaction. The research focuses on exploring the impact of adding curcumin and anthocyanin to sugar palm starch/chitosan bionanocomposite films, specifically examining the release kinetics of these bioactive compounds. The biocomposite film with added curcumin exhibits a smoother surface compared to the anthocyanin-based film. Although the thermal stability of the CH/SPS matrix remains unaffected by the addition of anthocyanin and curcumin, the inclusion of these compounds significantly reduces the melting enthalpy of the CH/SPS matrix. Specifically, the addition of curcumin decreases it from 142.96 J/g to 23.43 J/g, and the addition of anthocyanin reduces it to 33.22 J/g. Anthocyanin release from the CH/SPS matrix into water conforms to the Kosmeye-Peppas model (R 2 = 0.9808, n = 0.1177), while the release kinetics of curcumin compounds adhere to the Higuchi model (R 2 = 0.9968). These findings provide advantageous insights that potentially have implications for a variety of applications, particularly in areas such as sustainable food packaging.
“…Similar results were obtained in research [9] which concluded that nanocellulose can be added to the manufacture of PVA composites because it can increase mechanical characteristics such as tensile strength and elongation percentage. Synthesized limestone mixed with polyvinyl alcohol to obtain a nano-composite membrane that has good mechanical properties at a 1% mixture with Young's modulus of 22.28 M.Pa and a tensile strength of 13.23 M.Pa [10]. In this research, rice husks will be used as a filler to produce nanocomposites which can be used as automotive materials.…”
Nanoparticles of polyvinyl alcohol with rice husk ash as a filler for strong polymer material candidates have been prepared through the sol-gel method. Rice husk ash is a waste product obtained from the combustion of rice husks at a controlled temperature and possesses high pozzolanic properties due to its silica content. Ball milling and co-precipitation methods were employed on the rice husk ash to create nanoparticle materials. To produce nanocomposite membranes, a polyvinyl alcohol solution was utilized as a solvent through the sol-gel method. The nanocomposite samples of rice husk ash were analyzed thermally to determine the material’s response to temperature. Various nanocomposite compositions of polyvinyl alcohol and rice husk ash were used, including 0%, 1%, 2%, 3%, and 4%. Based on the thermal analysis, it is evident that there were changes in enthalpy (H) and mass characteristics in all five samples.
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