M. F. Aziz^1,2,*, A. A. Rahim¹, A. R. M. Rais^1,2,*

Journal of Polymer Materials, Vol.42, No.4, pp. 1097-1109, 2025, DOI:10.32604/jpm.2025.071129 - 26 December 2025

Abstract To study the behavior of structural dynamics, ionic conductivity and ion transport properties, the gel polymer electrolytes (GPEs) was developed using polyvinyl alcohol in combination with potassium iodide, dimethyl sulfoxide, ethylene carbonate, propylene carbonate and tetra-N-propylammonium iodide (C₁₂H₂₈IN), The GPEs were synthesized via a solution mixing technique, systematically varying the tetra-N-propylammonium iodide concentration to optimize ionic transport properties. The gel polymer electrolytes (GPEs) preparation was initially dissolving the potassium iodide and tetra-N-propylammonium iodide in a measured combination of ethylene carbonate, propylene carbonate, and dimethyl sulfoxide within a glass container. Subsequently, polyvinyl alcohol (PVA) was introduced into… More >

Abdulbari Bener^1,2,*, Ünsal Veli Üstündağ³, Emir Barışık⁴, Cem Cahit Barışık⁵

Canadian Journal of Urology, Vol.32, No.5, pp. 401-409, 2025, DOI:10.32604/cju.2025.067184 - 30 October 2025

Abstract Objectives: The evidence remains insufficient and controversial for evaluating modifiable parameters—such as vitamin D, calcium, ferritin, and uric acid—as preclinical biomarkers to contribute to the prevention and early diagnosis of prostate cancer, a disease with a prevalence of up to 10%–20% in men over 50 and strongly associated with environmental factors including diet (high in fat and red meat), obesity, physical inactivity, and carcinogen exposure. This study aims to investigate the potential biomarker role of vitamin D, calcium, ferritin, and uric acids in reducing the risk of prostate cancer (PCa). Methods: The case-control design was… More >

Madihan Yusof^1,2,3,*, Muhamad Saiful Sulaiman^1,3, Ros Syazmini Mohd Ghani^1,3,4, Sofiyah Mohd Razali^1,5

Journal of Renewable Materials, Vol.13, No.10, pp. 2059-2075, 2025, DOI:10.32604/jrm.2025.02025-0101 - 22 October 2025

Abstract This study investigates the development of an oil palm trunk (OPT) high-performance flame-retardant composite derived from an inexpensive and sustainable biomass source, processed using sodium chloride (NaCl) as a low-cost flame retardant, polyvinyl alcohol (PVA) as an adhesive, and calcium carbonate (CaCO₃) as an additive. The work aims to address the inherent flammability of OPT and to enhance its mechanical performance, dimensional stability, and fire resistance in an environmentally friendly and cost-effective manner. Results indicate that a 10% NaCl treatment optimally improves the performance of the composite, increasing bending strength (MOR) from 5.95 to 12.61 MPa… More > Graphic Abstract

Nurrul Asyiqin Shamsuri¹, Zamil Khairuddin², Muhamad Hafiz Hamsan³, Norhana Abdul Halim⁴, Mohd Fakhrul Zamani Kadir^1,5, Muhammad Fadhlullah Shukur^6,7,*

Journal of Polymer Materials, Vol.42, No.3, pp. 729-742, 2025, DOI:10.32604/jpm.2025.069060 - 30 September 2025

Abstract Polymeric materials have emerged as a promising alternative to electrolytic solutions in energy storage applications. However, high crystallinity and poor ionic conductivity are the main barriers restricting their daily application. In this study, we propose a polymer electrolyte system consisting of methylcellulose-polyvinyl alcohol (MC-PVA) blend as host material and lithium trifluoromethanesulfonate (LiCF₃SO₃) as dopant, which was prepared using the solution-casting method. The electrochemical impedance spectroscopy (EIS) analysis revealed a maximum conductivity of 5.42 × 10⁻⁶ S cm⁻¹ with 40 wt.% LiCF₃SO₃. The key findings demonstrated that the variation in the dielectric loss (ε_i) and dielectric constant (ε_r) was… More >

Xiangyang Zhou¹, Yashi Wang¹, Min Xiao^1,*, Jiajun Liu^1,2, Jiahao Wen¹, Haodong Shen³, Hucan Hong¹

Journal of Polymer Materials, Vol.42, No.3, pp. 795-810, 2025, DOI:10.32604/jpm.2025.068200 - 30 September 2025

Abstract Sugarcane bagasse (SCB) is a promising natural fiber for bio-based composites, but its high moisture absorption and poor interfacial adhesion with polymer matrices limit mechanical performance. While chemical treatments have been extensively explored, limited research has addressed how thermal treatment alone alters the surface properties and reinforcing behavior of SCB fibers. This study aims to fill that gap by investigating the effects of heat treatment on SCB fiber structure and its performance in starch/poly (vinyl alcohol) (PVA) composites. Characterization techniques including Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning… 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 >

Li Ji^1,2, Jiawei Mao^1,3, Ruixiang Li^1,*, Jiaqi Xu^1,*

Journal of Renewable Materials, Vol.13, No.9, pp. 1683-1706, 2025, DOI:10.32604/jrm.2025.02025-0043 - 22 September 2025

Abstract Primary diamines play an important role in the chemical industry, where they are widely used as raw materials for the manufacture of pharmaceuticals and polymers. Currently, primary diamines are mainly derived from petroleum, while harsh or toxic conditions are often needed. Biomass is abundant and renewable , which serves as a promising alternative raw material to produce primary diamines. This review primarily focuses on the synthesis of 2,5-bis(aminomethyl)furan (BAMF), a bio-based diamine with potential as a biomonomer for polyamides and polyureas. Specifically, this review emphasizes the synthesis of BAMF from three biomass-derived alcohols and aldehydes,… More > Graphic Abstract

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

Journal of Renewable Materials, Vol.13, No.7, pp. 1459-1473, 2025, DOI:10.32604/jrm.2025.02025-0046 - 22 July 2025

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

João Vitor Dorini Falavinha¹, Pedro Henrique Gonzales De Cademartori², Philippe Gérardin¹, Antonio Pizzi¹, Christine Gérardin-Charbonnier^1,*

Journal of Renewable Materials, Vol.13, No.4, pp. 687-697, 2025, DOI:10.32604/jrm.2025.058902 - 21 April 2025

Abstract Tannins are polyphenols widely present in the plant kingdom, commonly divided into two groups: condensed and hydrolysable tannins. Sustainable furanic bio-foams based on condensed tannins have been largely studied, but little is described about the use of hydrolysable tannins for this material. This study examined the potential of hydrolysable chestnut tannin in comparison to condensed mimosa tannins to produce furanic foams by chemical expansion. Due to the low reactivity of the hydrolysable tannin, the use of an external source for its polymerization and curing was necessary. Through Fourier transform infrared spectroscopy (FTIR) chromatography, it was More > Graphic Abstract

Mahdi Mubarok^1,*, Pirda Maharani Nafisah¹, Adi Santoso², Saefudin^2,*, Efrida Basri², Yusuf Sudo Hadi^1,3, Adik Bahanawan², Rohmah Pari², Imam Busyra Abdillah¹, Jingjing Liao⁴, Dede Hermawan¹, Trisna Priadi¹, Philippe Gérardin⁵, Wayan Darmawan¹

Journal of Renewable Materials, Vol.13, No.4, pp. 731-752, 2025, DOI:10.32604/jrm.2024.057476 - 21 April 2025

Abstract Furfurylation, a renowned chemical modification technique, uses furfuryl alcohol to enhance the properties of wood. This technology can be further refined by incorporating renewable tannins, which promote cross-linking with furfuryl alcohol. This study investigates the effects of furfurylation and tannin-modified furfurylation on the physical and mechanical properties of tropical Gmelina wood (Gmelina arborea Roxb.). Experiments involved impregnating Gmelina wood with aqueous solutions of furfuryl alcohol (FA) at 40% and 70% concentrations, as well as FA-tannin combinations (FA 40%-TA and FA 70%-TA), followed by polymerization at 103°C. The results demonstrated that both FA and FA-tannin treatments significantly… More > Graphic Abstract