Malak Khannoucha^1,*, Boubekeur Boudine¹, Imene Ameur¹, Aouatef Dali², Ouahiba Halimi¹, Miloud Sebais¹, Tahar Touam³

Journal of Polymer Materials, Vol.42, No.1, pp. 205-220, 2025, DOI:10.32604/jpm.2025.059697 - 27 March 2025

Abstract This work reports a soft chemistry approach for the synthesis of magnesium oxide nanoparticles (MgO) incorporated in a polyaniline (PANI) matrix to give PANI/MgO nanocomposite. Using spin coating method, three different percentages of MgO/PVC (1, 2, and 3% in wt.%) were deposited on glass substrates. These films of PANI/MgO nanocomposite were characterized by X-ray diffraction (XRD), atomic force microscopy (AFM), and UV-visible spectroscopy. The results of the XRD pattern revealed the embedding of MgO nanoparticles in the PANI matrix with cubic phase, with the average size of nanoparticles varying from 35.12 to 59.55 nm. The… More >

Heni Radiani Arifin^1,*, Yoan Christina Angelica¹, Bambang Nurhadi¹, Herlina Marta¹, Rossy Choerun Nissa²

Journal of Renewable Materials, Vol.13, No.3, pp. 617-635, 2025, DOI:10.32604/jrm.2025.057812 - 20 March 2025

Abstract Bionanocomposite film is produced from renewable and biodegradable natural resources. Although elephant foot yam (EFY) starch (Amorphophallus paeoniifolius) is a promising polymer for bionanocomposite film, the native hydrophilic properties influence the overall performance characteristics. Incorporating virgin coconut oil (VCO) and monoglyceride as hydrophobic components can improve mechanical properties and reduce permeability while increasing the hydrophobicity of the composite. Therefore, this study aimed to determine the effect of adding VCO and monoglyceride on EFY starch-nanocrystalline film at 3 and 5 wt% concentrations. Experimental tests were conducted to evaluate the physical and mechanical properties, water vapor transmission rate… More > Graphic Abstract

See Cheng Lee¹, Han Lyn Foong¹, Nur Hanani Z. A.^1,2,*

Journal of Renewable Materials, Vol.13, No.3, pp. 433-447, 2025, DOI:10.32604/jrm.2024.02024-0006 - 20 March 2025

Abstract Fish gelatin films have emerged as eco-friendly packaging materials due to their biodegradability and excellent film-forming properties. This study investigated the effects of varying homogenization rates (0, 6500, 9500, 13,500, 17,500, and 21,500 rpm) on the functional and structural properties of fish gelatin films enriched with cinnamon essential oil (CEO). Homogenization reduced droplet sizes and narrowed droplet size distributions in the film-forming emulsion (FFE). At a homogenization rate of 9500 rpm, the films exhibited excellent mechanical extensibility, reduced surface irregularities, and enhanced smoothness. The highest (p < 0.05) tensile strength and elongation at break were observed… More > Graphic Abstract

Ahmed M. Khalil¹, Samir Kamel^2,*

Journal of Renewable Materials, Vol.13, No.2, pp. 401-412, 2025, DOI:10.32604/jrm.2024.057419 - 20 February 2025

Abstract Developing favorable bio-based polymers that replace petroleum-based plastics is an essential environmental demand. Lignin is a by-product of the chemical pulping industry. It is a natural UV protection ingredient in broad-spectrum (UVA and UVB) sunscreens. It could be partially and selectively acetylated in a simple, fast, and more reliable process. In this work, a composite film was prepared with UV-resistant properties through a casting method. Bio-based cellulose acetate (CA) was employed as a major matrix while nano-acetylated kraft lignin (AL-NPs) was used as filler during synthesizing UV-shielding films loaded with various amounts (1–5 wt.%) of… More > Graphic Abstract

Toni Dwi Novianto^1,2, Sri Rahayoe^1,*, Bakti Berlyanto Sedayu^2,*

Journal of Renewable Materials, Vol.13, No.2, pp. 385-400, 2025, DOI:10.32604/jrm.2024.057313 - 20 February 2025

Abstract This study aimed to develop and characterize biodegradable packaging film from blends of two natural polysaccharides, i.e., agar and glucomannan. The glucomannan used was derived from the specific tuber plant Amorphophallus oncophyllus (locally known as “porang”), which grows abundantly in Indonesian forests and remains underutilized. Various ratios of agar and porang-glucomannan (PG) proportions were formulated to produce a food packaging film, which was subsequently tested for its mechanical, physical, chemical, and thermal properties. The results showed that the inclusion of PG to the film formulations notably enhanced the stretchability of agar films, achieving maximum a… More > Graphic Abstract

María Fernanda Cardona Lunar¹, Ramón Ordoñez², Heidi Fonseca Florido³, Joaquín Hernández-Fernández^4,5,6, Rodrigo Ortega-Toro^1,*

Journal of Renewable Materials, Vol.13, No.2, pp. 311-327, 2025, DOI:10.32604/jrm.2024.056639 - 20 February 2025

Abstract The extensive use of polymeric materials in single-use packaging has driven the need to develop biodegradable alternatives. This study investigates the incorporation of graphene oxide (GO) and Moringa oleifera seed oil (MOSO) into a gelatin matrix to create polymer films and evaluate their potential as active packaging materials. The properties of these films were evaluated using structural, thermal, mechanical, optical, and physicochemical methods to determine their suitability for food packaging applications. The results showed that GO and MOSO were homogeneously dispersed in the gelatin matrix, forming colloidal particles (around 5 µm in diameter). The addition… More > Graphic Abstract

Desy Nurliasari¹, Awaly Ilham Dewantoro¹, Muhammad Adly Rahandi Lubis^2,3, Roni Kastaman^1,4,*, Mohamad Djali^3,5, Efri Mardawati^1,3, Devi Maulida Rahmah^1,3, Siti Nurhasanah^3,5, Akbar Hanif Dawam Abdullah^2,3, Lukmanul Hakim Zaini^6,7,*

Journal of Renewable Materials, Vol.13, No.1, pp. 181-197, 2025, DOI:10.32604/jrm.2024.056475 - 20 January 2025

Abstract Konjac is an ideal candidate for edible coatings on fruits due to its hydrophilic properties, film-forming ability, barrier properties, safety, and biodegradability. Meanwhile, the high market demand for strawberries necessitates post-harvest treatment to extend their shelf life and preserve their quality, as strawberries are known for their fragile skin and soft texture. To fully utilize konjac and develop high-quality coating films, native konjac flour (NKF) and konjac glucomannan (KGM) were extracted from its corm and used as a coating film for strawberries in the present study. Therefore, this study aimed to compare the physical properties… More > Graphic Abstract

Rahool Rai^1,2,3,*, Fareed Hussain Mangi⁴, Kashif Ahmed², Sudhakar Kumaramsay^1,5,6,*

Energy Engineering, Vol.122, No.1, pp. 153-166, 2025, DOI:10.32604/ee.2024.051789 - 27 December 2024

Abstract The growing need for sustainable energy solutions, driven by rising energy shortages, environmental concerns, and the depletion of conventional energy sources, has led to a significant focus on renewable energy. Solar energy, among the various renewable sources, is particularly appealing due to its abundant availability. However, the efficiency of commercial solar photovoltaic (PV) modules is hindered by several factors, notably their conversion efficiency, which averages around 19%. This efficiency can further decline to 10%–16% due to temperature increases during peak sunlight hours. This study investigates the cooling of PV modules by applying water to their… More >

Victor Kozlov^1,*, Alsu Zimasova¹, Nikolai Kozlov²

FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.12, pp. 2693-2707, 2024, DOI:10.32604/fdmp.2024.052398 - 23 December 2024

Abstract The behavior of a viscous liquid film on the wall of a rapidly rotating cylinder subjected to angular vibrations is experimentally studied. The cavity is filled with an immiscible low-viscosity liquid of lower density. In the absence of vibrations, the high viscosity liquid covers the inner surface of the cylinder with a relatively thin axisymmetric film; the low-viscosity liquid is located in the cavity interior. It is found that with an increase in the amplitude of rotational vibrations, the axisymmetric interphase boundary loses stability. An azimuthally periodic 2D “frozen wave” appears on the film surface… More >

Clara Pastor, Chelo González-Martínez, Maite Cháfer, Amparo Chiralt^*

Journal of Renewable Materials, Vol.12, No.12, pp. 1949-1962, 2024, DOI:10.32604/jrm.2024.056404 - 20 December 2024

Abstract Chitosan films with propolis aqueous extract were obtained in order to improve the antioxidant capacity of the materials. Likewise, oleic acid (OA) was also incorporated to enhance the film hydrophobicity, with and without previous infusion with propolis, to extract other potentially active compounds. The propolis extracts and the chitosan film-forming dispersions were characterised as to their particle size distribution, zeta potential and rheological behaviour. Chitosan-based films with aqueous extract and with oleic acid, containing or not propolis compounds, were obtained and characterised as to their microstructure, mechanical, barrier and optical properties and antioxidant capacity in… More > Graphic Abstract