Lekaa K. Abdul Karem¹, Badriah Saad Al-Farhan², Ghada M. G. Eldin³, Samir Kamel⁴, Ahmed M. Khalil^5,*

Journal of Renewable Materials, DOI:10.32604/jrm.2025.02025-0046

Abstract In this study, the casting process is used to fabricate modified polyvinyl alcohol (PVA), starch (S), and carboxymethyl cellulose (CMC) polymer blend films (PVA/S/CMC) loaded with various concentrations of iron-doped carbon quantum dots (Fe-CQDs) and denoted as (PVA/S/CMC@Fe-CQDs). A one-step microwave strategy was employed as a facile method to prepare Fe-CQDs. Through a series of characterization techniques, fourier-transform infrared (FTIR) spectroscopy, x-ray diffraction (XRD) analysis, and scanning electron microscopy (SEM) have been used to show the successful integration of Fe-CQDs into the PVA/S/CMC matrix. Loading the synthesized Fe-CQDs to the polymeric matrix significantly enhanced the… More > Graphic Abstract

Nila Cecília Faria Lopes Medeiros^1,2, Gisele Amaral-Labat¹, Leonardo Iusuti de Medeiros^1,2, Alan Fernando Ney Boss¹, Beatriz Carvalho da Silva Fonseca¹, Manuella Gobbo de Castro Munhoz³, Guilherme F. B. Lenz e Silva³, Mauricio Ribeiro Baldan¹, Flavia Lega Braghiroli^4,*

Journal of Renewable Materials, DOI:10.32604/jrm.2025.02025-0017

Abstract Biochar, a carbon-rich material derived from the thermochemical conversion of biomass under oxygen-free conditions, has emerged as a sustainable resource for radar-absorbing technologies. This study explores the production of activated biochars from end-of-life wood panels using a scalable and sustainable physical activation method with CO₂ at different temperatures, avoiding the extensive use of corrosive chemicals and complex procedures associated with chemical or vacuum activation. Compared to conventional chemically or vacuum-activated biochars, the physically activated biochar demonstrated competitive performance while minimizing environmental impact, operational complexity, and energy consumption. Furthermore, activation at 750°C reduces energy consumption by 14%… More > Graphic Abstract

Timothy K. Mulenga^1,2, Albert U. Ude¹, Vivekanandhan Chinnasamy¹, Resego Phiri², Sanjay Mavinkere Rangappa^2,*, Suchart Siengchin²

Journal of Renewable Materials, DOI:10.32604/jrm.2025.02025-0015

Abstract This study presents for the first time, the characterization of the physical, chemical, thermal, and mechanical properties of Botswana sisal fibers. The aim was to evaluate the characteristics of sisal fibers from Botswana as potential reinforcement materials. The fibers were harvested from the outskirts of Selebi Phikwe, Botswana, and extracted using the scraping method without surface treatment. The analysis techniques of X-ray diffraction, Fourier-transform infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy were employed to characterize the properties of the lignocellulosic fibers. The chemical composition revealed 69.5% cellulose, 15.7% hemicellulose, 9.5% lignin, 2.07% ash, 5.73% More > Graphic Abstract

Duc Hoa Pham, Bijender Kumar, Samia Adil, Jaehwan Kim^*

Journal of Renewable Materials, DOI:10.32604/jrm.2025.02025-0040

Abstract Increasing bio-based content in composites without compromising performance is an urgent duty toward sustainability and carbon neutralization. This paper reports high bio-content thermoset resin and cellulose long filament (CLF)-reinforced green composite by using a semi-bio imine-based hardener. The hardener (VDDM) is synthesized from DDM grafted with vanillin, and a bio-based vanillyl alcohol epoxy (VAE) monomer is used to prepare highly bio-based thermoset resin. The VAE-VDDM thermoset shows high tensile strength and Young’s modulus up to 94.8 MPa and 2.69 GPa, respectively. Further, a natural fiber-reinforced green composite is made with CLF and the prepared VAE-VDDM More >

Hammadi El Farissi^1,2,*, Anass Choukoud^1,2, Bouchaib Manoun^3,4, Mohamed El Massaoudi^5,6, Abdelmonaem Talhaoui²

Journal of Renewable Materials, DOI:10.32604/jrm.2025.02025-0004

Abstract In light of the growing urgency to address environmental degradation and improve carbon sequestration strategies, this study rigorously investigates the potential of Cistus ladaniferus as a viable feedstock for biochar and activated carbon production. The influence of pyrolysis temperature, heating rate and particle size on biochar yield was systematically examined. The results demonstrate that increasing pyrolysis temperature and heating rate significantly reduces biochar yield, while particle size plays a crucial role in thermal degradation and biochar retention. To evaluate the structural and chemical properties of the materials, various characterization techniques were employed, including Fourier-transform infrared spectroscopy… More > Graphic Abstract

Souha Mansour^1,2,*, Amandine Viretto^1,2, Marie-France Thevenon^1,2,*, Loïc Brancheriau^1,2

Journal of Renewable Materials, DOI:10.32604/jrm.2025.02024-0078

Abstract The use of agricultural residues in biocomposite production has gained increasing attention, driven by several benefits. Converting agricultural by-products into bio-based materials within a circular economy represents a sustainable strategy to mitigate lignocellulosic waste, reduce reliance on fossil resources, and lower environmental pollution. This approach also creates economic opportunities for rural African communities by generating diverse income sources for workers in collection, processing, and manufacturing. As a result, the integration of agricultural residues into biocomposites production not only addresses environmental concerns but also fosters economic growth and supports rural development. In this review, five biomasses… More >

Jiahao Liu^1,#, Xinyu Zhang^1,#, Huiwei Wang¹, Yupeng Li¹, Shan Jin¹, Guanxian Qiu¹, Ce Sun^1,2,*, Haiyan Tan¹, Yanhua Zhang^1,2,*

Journal of Renewable Materials, DOI:10.32604/jrm.2025.02025-0042

Abstract In recent years, degradable materials to replace petroleum-based materials in preparing high-performance foams have received much research attention. Degradable polymer foaming mostly uses supercritical fluids, especially carbon dioxide (Sc-CO₂). The main reason is that the foams obtained by Sc-CO₂ foaming have excellent performance, and the foaming agent is green and pollution-free. In current research, Poly (butylene adipate-co-terephthalate) (PBAT), poly (lactic acid) (PLA), and other degradable polymers are generally used as the main foaming materials, but the foaming performance of these degradable polyesters is poor and requires modification. In this work, 10% PLA was added to PBAT to… More >

Wohua He, Fangji Wu, Haoqun Hong^*

Journal of Renewable Materials, DOI:10.32604/jrm.2025.02025-0005

Abstract Under the background of the current energy crisis and environmental pollution, the development of green and sustainable materials has become particularly urgent. As one of the most abundant natural polymers on earth, cellulose has attracted wide attention due to its green recycling, sustainable development, degradability, and low cost. Therefore, cellulose and its derivatives were used as the starting point for comprehensive analysis. First, the basic structural properties of cellulose were discussed, and then the extraction and utilization methods of cellulose were reviewed, including Sodium Hydroxide based solvent system, N, N-Dimethylacetamide/Lithium Chloride System, N-Methylmorpholine-N-Oxide (NMMO) system, More > Graphic Abstract

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, DOI:10.32604/jrm.2025.02025-0006

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

Pattaranun Thuadaij, Bualoy Chanpaka^*

Journal of Renewable Materials, DOI:10.32604/jrm.2025.057590

Abstract Natural rubber (NR) foams are widely used. However, further studies are required for preparing eco-friendly NR foam and determining the optimum physical properties appropriate for application. This study aims to create an NR foam from rubber reinforced with sugarcane bagasse ash (SCBA) and sodium alginate. The results showed that the SCBA was primarily composed of silica or silicon dioxide (87.52% by weight) and carbon (11.41% by weight). This study investigated the influence of the amount of sodium alginate (0–5 phr) used in the NR foam formation. The addition of SCBA on the NR foam affected More > Graphic Abstract