Aina Aqilah Mohd Rizal¹, Oskar Hasdinor Hassan², Nor Kartini Jaafar^1,2, Masnawi Mustaffa¹, Mohd Tajudin Mohd Ali^1,*, Ajis Lepit³, Nazli Ahmad Aini^1,2,*

Energy Engineering, Vol.123, No.1, 2026, DOI:10.32604/ee.2025.071726 - 27 December 2025

Abstract Proton exchange membrane (PEM) is an integral component in fuel cells which enables proton transport for efficient energy conversion. Sulfonated Polyether Ether Ketone (SPEEK) has emerged as a cost-effective option with non-fluorinated aromatic backbones for Proton Exchange Membrane Fuel Cell (PEMFC) applications, even though it exhibits lower proton conductivity compared to Nafion. This work aims to study the influence of Sulfonated Chitosan (SCS) concentrations on proton conductivity of SPEEK-based PEM at room temperature. SPEEK was synthesized using a sulfonation process with concentrated sulfuric acid at room temperature. SCS was synthesized via reflux of CS and… More > Graphic Abstract

Jazmín Montserrat Gaucin-Delgado¹, Cristian Oswaldo Solis-López², Pablo Preciado-Rangel³, Bernardo Espinosa-Palomeque⁴, Francisco Gerardo Veliz-Deras², Viridiana Contreras-Villarreal², Ricardo Israel Ramírez-Gottfried^5,*

Phyton-International Journal of Experimental Botany, Vol.94, No.12, pp. 3961-3973, 2025, DOI:10.32604/phyton.2025.072536 - 29 December 2025

Abstract Selenium (Se) deficiency is a global health problem affecting more than 500 million people; crop biofortification is a sustainable strategy for its mitigation. This study investigated the effect of the application of selenate nanoparticles (SeO₄²⁻) and the combination of selenate (SeO₄²⁻) and chitosan (CS) (forming a SeO₄²⁻-CS complex) on the antioxidant profile, growth, biomass, bioactive compounds, enzymes, and Se accumulation of wheat (Triticum spp.) sprouts. Fourteen treatments were applied using a factorial design combining seven concentrations and two formulations: SeO₄²⁻ and SeO₄²⁻-CS. It was identified that chitosan increased Se uptake efficiency by 30% versus conventional selenate. The optimal… More >

Surelys Ramos-Bell¹, Edson Rayón-Díaz¹, Juan A. Herrera-González², Estefanía Martínez-Batista¹, Rita M. Velázquez-Estrada¹, Porfirio Gutiérrez–Martínez^1,*

Phyton-International Journal of Experimental Botany, Vol.94, No.10, pp. 3145-3156, 2025, DOI:10.32604/phyton.2025.071543 - 29 October 2025

Abstract A significant portion of losses in the fruit and vegetable sector are caused by the necrotrophic fungus Botrytis cinerea, due to its high prevalence in over 1000 crop species. Identifying a technology capable of exclusively inhibiting its growth and development remains challenging; therefore, various treatments have been proposed to act synergistically in preventing the spread of this pathogen. The objective of this study was to evaluate an ultrasound-assisted treatment combined with chitosan to control the development of B. cinerea. In vitro analyses showed that combining temperature, ultrasound, and chitosan inhibited the fungal radial growth by 80%, reduced sporulation, More >

Md. Tanvir Raihan¹, Md. Himel Mahmud², Badhon Chandra Mazumder², Md. Nazif Hasan Chowdhury³, Mohammad Tajul Islam^1,*

Journal of Polymer Materials, Vol.42, No.3, pp. 677-711, 2025, DOI:10.32604/jpm.2025.068356 - 30 September 2025

Abstract Electrospinning has gained significant importance across various fields, including biomedicine, filtration, and packaging due to the control it provides over the properties of the resulting materials, such as fiber diameter and membrane thickness. Chitosan is a biopolymer that can be utilized with both natural and synthetic copolymers, owing to its therapeutic potential, biocompatibility, and biodegradability. However, producing electrospun chitosan is challenging due to its high solution viscosity, which often results in the formation of beads instead of uniform fibers. To address this issue, the spinnability of chitosan is significantly enhanced, and the production of continuous More >

Deepti Rekha Sahoo, Trinath Biswal^*

Journal of Polymer Materials, Vol.42, No.3, pp. 811-835, 2025, DOI:10.32604/jpm.2025.067022 - 30 September 2025

Abstract The purpose of this research work is to determine the removal efficiency of Cu²⁺ and Pb²⁺ ions using polyvinyl alcohol/neem leaf extract/chitosan (PVA/NLE/CS) composite films as adsorbent materials from an aqueous medium, with respect to pH, contact time, and adsorbent dosage. The synthesized composite material was characterized using Fourier Transform Infrared (FTIR) spectroscopy, thermogravimetric analysis-Derivative Thermogravimetry (TGA-DTG), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDX). The antibacterial activity and swelling response of the material were studied using suitable methodologies. The FTIR study confirmed the interactions among PVA, chitosan, and… More >

Tingqiang Yan, Xiaodong Wang^*, Yingjie Qiao^*

Journal of Renewable Materials, Vol.13, No.8, pp. 1587-1604, 2025, DOI:10.32604/jrm.2025.02025-0075 - 22 August 2025

Abstract Polylactic acid (PLA), a biodegradable polymer, exhibits superior mechanical strength and processability. However, its broader adoption is hindered by inherent brittleness, low hydrophilicity, and sluggish crystallization kinetics. Chitosan (CS), a natural polysaccharide renowned for its biocompatibility and biodegradability, offers potential to address these limitations. While both materials have garnered significant attention in materials science, research on their integration via melt blending and the resulting performance enhancements for food-contact plastics remains understudied. This research comprehensively explores how different levels of CS content, from 0% to 10%, impact the characteristics of chitosan/polylactic acid (CS/PLA) composites. It specifically… More >

Pelita Ningrum¹, Sri Hidayati^1,*, Wahyu Hidayat², Samsul Rizal¹, Erika Ayu Agustiany³, Emma Rochima^4,5, Lee Seng Hua⁶, Antonio Di Martino⁷, Apri Heri Iswanto⁸, Widya Fatriasari^3,5,*

Journal of Renewable Materials, Vol.13, No.7, pp. 1367-1388, 2025, DOI:10.32604/jrm.2025.02025-0006 - 22 July 2025

Abstract Biodegradable plastics are types of plastics that can decompose into water and carbon dioxide the actions of living organisms, mostly by bacteria. Generally, biodegradable plastics are obtained from renewable raw materials, microorganisms, petrochemicals, or a combination of all three. This study aims to develop an innovative bioplastic by combining chitosan and lignin. Bioplastic was prepared by casting method and characterized by measuring the mechanical properties like tensile strength, Young’s modulus, and elongation at break. The chemical structure, together with the interactions among chitosan and lignin and the presence of new chemical bonds, were evaluated by… More > Graphic Abstract

Panji Setya Utama Putra¹, Damar Rastri Adhika^2,3,*, Lia Amelia Tresna Wulan Asri⁴, Suprijadi Suprijadi^3,5

Journal of Renewable Materials, Vol.13, No.6, pp. 1043-1070, 2025, DOI:10.32604/jrm.2025.02024-0002 - 23 June 2025

Abstract The continuous increase in petroleum-based plastic food packaging has led to numerous environmental concerns. One effort to reduce the use of plastic packaging in food is through preservation using biopolymer-based packaging. Among the many types of biopolymers, chitosan is widely used and researched due to its non-toxic, antimicrobial, and antifungal properties. Chitosan is widely available since it is a compound extracted from seafood waste, especially shrimps and crabs. The biodegradability and biocompatibility of chitosan also showed good potential for various applications. These characteristics and properties make chitosan an attractive biopolymer to be implemented as food… More > Graphic Abstract

Jun-Jie Yang¹, Ran An¹, Jing-Heng Nie¹, Hao-Miao Ma¹, Yu-Qing Yan¹, Yuan-Ru Guo^1,*, Qing-Jiang Pan^2,*

Journal of Renewable Materials, Vol.13, No.5, pp. 885-900, 2025, DOI:10.32604/jrm.2025.02024-0066 - 20 May 2025

Abstract To achieve the sustainable development and carbon neutral target, biomass chitosan (CS) was used to prepare N,S-doped biochar (NSB) with the assistance of sodium dodecyl benzene sulfonate (SDBS). The synthetic route was developed, which does not require the activation that is frequently-used for active carbon materials. By manipulating their interaction, SDBS was deposited with CS in neutral and basic conditions. Subsequent calcination successfully has access to NSB. It features with hierarchical porous structure and abundant functional groups. The dually-doped NSB bears excellent adsorption performance towards chlortetracycline (CTC). The adsorption capacity reaches 101.3 mg g⁻¹ within 4 More >

Belkis Sulbarán-Rangel^1,*, Jorge Armando Caldera Siller¹, Salvador García Enríquez², José Anzaldo-Hernandez², Jenny Arratia-Quijada³, Marianelly Esquivel Alfaro⁴

Journal of Renewable Materials, Vol.13, No.5, pp. 849-863, 2025, DOI:10.32604/jrm.2025.02024-0061 - 20 May 2025

Abstract In this research, the antibacterial properties of a composite material prepared from agave bagasse cellulose fibers doped with silver nanoparticles and chitosan were studied. The development of composite materials with antibacterial properties and environmentally friendly based on cellulose fibers from agave bagasse with silver nanoparticles prepared by green synthesis and chitosan from shrimp waste enhances the value of these agro-industrial wastes and offers the opportunity for them to have biomedical applications since these raw materials have been poorly reported for this application. The antibacterial properties of chitosan and silver nanoparticles are already known. However, the… More > Graphic Abstract