Hui Fan, Xinqiang Li^*

Journal of Polymer Materials, Vol.43, No.1, 2026, DOI:10.32604/jpm.2026.075290 - 03 April 2026

Abstract To meet the needs of the treatment of Cu²⁺ pollution in aqueous solution, the sodium alginate-modified polyacrylic acid (PAA/SA) composite hydrogel was prepared by solution polymerization with acrylic acid (AA) as monomer, sodium alginate (SA) as filler, N, N’-methylenebisacrylamide (MBA) as crosslinking agent, and potassium persulfate (K₂S₂O₈) as initiator. The characterization results showed that the introduction of SA significantly improved the physical and chemical properties of PAA hydrogel materials. Scanning electron microscopy (SEM) showed that as the SA content increased, the materials gradually evolved from a dense blocky structure to a porous network. When the SA… More >

Claudia M. L. Bevilaqua^1,*, José Vilemar de Araújo-Filho², Livia F. Ximenes¹, Henety N. Pinheiro¹, Flávia O. M. da Silva Abreu³, Débora S. C. M. Castelo Branco⁴, Ana Carolina F. L. Melo⁴, Weibson P. P. André¹, Wesley L. C. Ribeiro⁵, Lorena M. B. de Oliveira¹

Journal of Renewable Materials, Vol.14, No.2, 2026, DOI:10.32604/jrm.2025.02025-0138 - 25 February 2026

Abstract Eucalyptus staigeriana essential oil (EsEO) has well-known anthelmintic activity in small ruminants. However, its volatility limits its therapeutic action. The aim of this study was to develop a water-in-oil sodium alginate-based nanoemulsion with an effective in vitro effect on the eggs and larvae of Haemonchus contortus, a gastrointestinal parasite of sheep and goats. Four oil-in-water sodium alginate-based emulsions were prepared using a high-energy method with different proportions of Tween 80, EsEO, and sodium alginate (ALG) 4%. The physical-chemical characterization included stability, particle size, zeta potential and infrared spectra. The effects of the emulsions were evaluated against H. contortus via… More > Graphic Abstract

Pattaranun Thuadaij, Bualoy Chanpaka^*

Journal of Renewable Materials, Vol.13, No.4, pp. 753-772, 2025, DOI:10.32604/jrm.2025.057590 - 21 April 2025

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

M. A. H. Nizam¹, A. F. Fuzlin^1,2, A. S. Samsudin^1,2,*

Journal of Polymer Materials, Vol.42, No.1, pp. 173-185, 2025, DOI:10.32604/jpm.2025.059244 - 27 March 2025

Abstract This work explores the dielectric and electrochemical properties of solid biopolymer blend electrolytes (SBEs) based on a combination of alginate and polyvinyl alcohol (PVA), doped with varying concentrations of ammonium iodide (NH₄I). The SBEs were synthesized using the solution casting method, and their ac conductivity exhibited an optimal value of 1.01 × 10⁻⁵ S · cm⁻¹ at 25 wt.% NH₄I. Detailed dielectric and modulus spectroscopy analyses revealed distinctive trends in relation to NH₄I concentration, suggesting complex dielectric relaxation behavior. The universal power law (UPL) analysis identified the Small Polaron Hopping (SPH) mechanism as the dominant conduction process in More >

Denis Miroshnichenko¹, Vladimir Lebedev², Katerina Lebedeva², Аnna Cherkashina², Sergey Petrushenko^3,4,*, Olena Bogoyavlenska¹, Аnzhela Olkhovska⁵, Ihor Hrubnyk⁶, Liudmyla Maloshtan⁶, Natalja Klochko⁷

Journal of Renewable Materials, Vol.12, No.10, pp. 1691-1713, 2024, DOI:10.32604/jrm.2024.054769 - 23 October 2024

Abstract The main goal of the article is the creation and study of thermosensitive and wound-healing gelatin-alginate biopolymer hydrogels modified with humic acids. Their rheological properties, swelling and contraction behavior were experimentally investigated, elucidated using Fourier transform infrared spectroscopy and used to achieve the physiological melting point, which is necessary for successful drug delivery. It has been shown that in the gelatin-alginate-humic acid biopolymer hydrogels systems, it is possible to obtain a gel-sol transition temperature close to the physiological temperature of 37°C, which is important for drug delivery in the treatment of wounds. By changing the… More > Graphic Abstract

Manivasagam Vishwa Rohini^1,#, Sathish Kiruba¹, Danniel Santhanaraj¹, Prakash Priyanka Nair¹, P. Sudhakara^2,*, Jujhar Singh³, Balamurugan Rathinam^4,*, Vanaraj Ramkumar^5,6,#

Journal of Polymer Materials, Vol.41, No.3, pp. 159-178, 2024, DOI:10.32604/jpm.2024.054801 - 30 September 2024

Abstract The Cavendish banana, Musa acuminata, is a climacteric fruit that ripens quickly after harvest. Due to their high perishability and susceptibility to disease, bananas have substantial postharvest losses. After harvesting, it is important to extend the bananas’ shelf life. Unique coating gel solutions based on glycerol and ascorbic acid were developed to accomplish this. Chitosan mixed with glacial acetic acid, lactic acid, and sodium alginate were among the gel solutions in these combinations. The goal was to improve banana preservation while maintaining freshness and quality by implementing innovative formulations and techniques. The fruits are hand-dried and… More >

Xiaoyu Chen^*

Journal of Renewable Materials, Vol.12, No.4, pp. 815-826, 2024, DOI:10.32604/jrm.2024.048470 - 12 June 2024

Abstract A novel core-shell hydrogel bead was fabricated for effective removal of methylene blue dye from aqueous solutions. The core, made of sodium alginate-g-polyacrylamide and attapulgite nanofibers, was cross-linked by Calcium ions (Ca). The shell, composed of a chitosan/activated carbon mixture, was then coated onto the core. Fourier transform infrared spectroscopy confirmed the grafting polymerization of acrylamide onto sodium alginate. Scanning electron microscopy images showed the core-shell structure. The core exhibited a high water uptake ratio, facilitating the diffusion of methylene blue into the core. During the diffusion process, the methylene blue was first adsorbed by More > Graphic Abstract

Flavia Oliveira Monteiro da Silva Abreu^1,2,*, Taysse Holanda¹, Joice Farias do Nascimento¹, Henety Nascimento Pinheiro¹, Rachel Menezes Castelo¹, Hélcio Silva dos Santos³, Thais Benincá⁴, Patrícia da Silva Malheiros⁴, Júlio César Sousa Prado⁵, Raquel de Oliveira Fontenelle⁵, Maria Madalena de Camargo Forte²

Journal of Renewable Materials, Vol.12, No.2, pp. 285-304, 2024, DOI:10.32604/jrm.2023.043919 - 11 March 2024

Abstract With the increase in antimicrobial resistance, it has become necessary to explore alternative approaches for combating and preventing diseases. DB-cinnamaldehyde (CNM) and Benzyl4-amino (B4AM) are bioactive compounds derived from chalcones but with restricted solubility in aqueous media. Nanoemulsions can enhance the solubility of compounds and can be a promising alternative in the development of novel antimicrobials, with reduced side effects and prolonged release. The objective of this study was to evaluate the stability of oil-in-water nanoemulsions loaded with two distinct types of chalcones at two different dosages, to propose a stable formulation with antimicrobial properties.… More > Graphic Abstract

Mingxuan He¹, Yahui Zheng¹, Jiaming Shen¹, Jiawei Shi¹, Yongzheng Zhang¹, Yinghong Xiao^2,*, Jianfei Che^1,*

Journal of Renewable Materials, Vol.12, No.2, pp. 215-233, 2024, DOI:10.32604/jrm.2023.043659 - 11 March 2024

Abstract

The abuse of plastic food packaging has brought about severe white pollution issues around the world. Developing green and sustainable biomass packaging is an effective way to solve this problem. Hence, a chitosan/sodium alginate-based multilayer film is fabricated via a layer-by-layer (LBL) self-assembly method. With the help of superior interaction between the layers, the multilayer film possesses excellent mechanical properties (with a tensile strength of 50 MPa). Besides, the film displays outstanding water retention property (blocking moisture of 97.56%) and ultraviolet blocking property. Anthocyanin is introduced into the film to detect the food quality since

More > Graphic Abstract

Yunhong Zhang^1,2,*, Yonghui Yang^1,2, Jiawei Mao^1,2

Phyton-International Journal of Experimental Botany, Vol.93, No.2, pp. 185-212, 2024, DOI:10.32604/phyton.2023.046811 - 27 February 2024

Abstract Alginate oligosaccharides (AOS) enhance drought resistance in wheat (Triticum aestivum L.), but the definite mechanisms remain largely unknown. The physiological and transcriptome responses of wheat seedlings treated with AOS were analyzed under drought stress simulated with polyethylene glycol-6000. The results showed that AOS promoted the growth of wheat seedlings and reduced oxidative damage by improving peroxidase and superoxide dismutase activities under drought stress. A total of 10,064 and 15,208 differentially expressed unigenes (DEGs) obtained from the AOS treatment and control samples at 24 and 72 h after dehydration, respectively, were mainly enriched in the biosynthesis of… More >