Mariia Dmitrenko¹, Daniel Pasquini^2,*, Marcela Piassi Bernardo², João Marcelo de Lima Alves², Anna Kuzminova¹, Ilnur Dzhakashov¹, Andrey Terentyev³, Alexander Dyachkov³, K. S. Joshy⁴, Maya Jacob John⁵, Sabu Thomas⁴, Anastasia Penkova^1,*

Journal of Renewable Materials, Vol.13, No.6, pp. 1139-1168, 2025, DOI:10.32604/jrm.2025.02024-0023 - 23 June 2025

Abstract Petrochemical plastics are widely used for food protection and preservation; however, they exhibit poor biodegradability, resisting natural degradation through physical, chemical, or enzymatic processes. As a sustainable alternative to conventional plastic packaging, edible films offer effective barriers against moisture, gases, and microbial contamination while being biodegradable, biocompatible, and environmentally friendly. In this study, novel active food packaging materials (in film form) were developed by incorporating starch, carrageenan, nanocellulose (NC), Aloe vera, and hibiscus flower extract. The effects of varying the matrix composition (26.5–73.5 wt.% starch/carrageenan), NC concentration (2.77–17.07 wt.%), and particle type (fibers or crystals) on… More > Graphic Abstract

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 >

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

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

Norma E. Marcovich¹, Matías Federico Hernández^1,2, María Roberta Ansorena^2,*

Journal of Renewable Materials, Vol.12, No.12, pp. 2049-2068, 2024, DOI:10.32604/jrm.2024.055151 - 20 December 2024

Abstract In this work, active and edible films for food packaging were obtained by intensive mixing and compression molding of the wheat gluten (WG) glycerol-plasticized paste. Thyme essential oil (TEO, 10 and 15 wt.%) was incorporated as the active component microencapsulated in β-cyclodextrins (β-CD) and included directly into the biopolymer matrix for comparison. It was found that films incorporating microencapsulated TEO are more soluble in water (total soluble matter (dry method) of about 33% and 36.6% vs. 22.4% and 18.6%, for films containing 10% and 15% TEO, respectively) but less rigid than those obtained with free oil… More > Graphic Abstract

Dong Li¹, Feilong Zhang², Shutao Wang^3,*, Huajian Gao^1,4,*, Xiaodong Chen^2,5,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.32, No.2, pp. 1-2, 2024, DOI:10.32604/icces.2024.011040

Abstract Three-dimensional (3D) architectures and related devices have been widely concerned in recent years due to their unique geometrical advantages and superior performance. Existing approaches to transforming planar thin films into 3D architectures require the use of active materials [1,2] or need substrates to maintain 3D shapes [3,4]. Here, we propose a peeling-induced shape morphing strategy to construct freestanding 3D architectures from 2D plastic films including inert polymers, such as polyethylene terephthalate (PET) and polyimide (PI), which are significant substrate materials for flexible electronics. The plastic strains generated by peeling the film from an adhered plane… More >

Rui Li^1,*, Yonggang Huang², John A. Rogers²

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.4, pp. 1-2, 2024, DOI:10.32604/icces.2024.012578

Abstract Bioresorbable electronic devices represent an emerging class of technology that involves components which physically disappear, in whole or in part, at prescribed rates and at programmed times [1,2]. Obtaining reliable performance and favorable degradation behavior demands materials that can serve as biofluid barriers in encapsulating structures that avoid premature degradation of active electronic components [3–5]. We have recently presented a multilayer organic–inorganic film design that addresses this need, with properties in water impermeability, mechanical flexibility, and processability that are superior to alternatives [6,7]. Theoretical modeling for water permeation across the multilayer films provides an important More >