per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332025-09102515articleMohammad Mahdi Ashtari Barzokimahdiashtari@ut.ac.ir1Ehsan Gainiehsan.gaeini@ut.ac.ir2Department of Polymer Engineering, Faculty of Chemical Engineering, Tehran<p>Multilayer polymer films are widely used in medical and food packaging due to their excellent barrier properties, mechanical strength, thermal properties and flexibility. These films consist of multiple polymer layers, each designed to provide specific characteristics such as oxygen/moisture resistance, radiation protection, durability and microbial protection. In medical applications, they ensure the safety and integrity of blood and pharmaceutical products during storage and transportation. Common manufacturing processes include co-extrusion and lamination, which combine barrier layers (e.g., EVOH, PVDC), bulk layers (e.g., PE, PP), and sealing layers (e.g., LDPE, EVA) to optimize performance. Additives such as antioxidants, UV stabilizers, and slip agents enhance thermal stability and surface functionality. Advanced characterization techniques like SEM microscopy, FTIR spectroscopy, and DSC thermal analysis evaluate layer composition and behavior. Key parameters like gas/water vapor permeability are controlled using materials like EVOH (superior oxygen barrier) and polyethylene (excellent moisture resistance). Interlayer adhesion challenges are addressed through adhesive or compatibilizer layers. Innovations in extrusion and lamination technologies enable precise layer thickness control, improving efficiency, cost-effectiveness, and product shelf life. This review highlights the critical importance of material selection, additive formulation, and process optimization in developing high-performance multilayer films for healthcare and food preservation applications.&nbsp;&nbsp;</p>http://irdpt.ir/Article/49856Multilayer films polymer packaging co-extrusion barrier properties medical applications additive optimization. per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332025-091021728articleMohammad Hossein Karamikarami.polymerphd@gmail.com1Omid Moeini Jazni o.moini@eng.ui.ac.ir2Vahid Yazdanianv.yazdanian@itrc.ac.ir3Mohammad Ali Etminani Isfahaneo_moini@yahoo.com4Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, P.O. Box 81746-73441, Isfahan, IranDepartment of Chemical Engineering, Faculty of Engineering, University of Isfahan, P.O. Box 81746-73441, Isfahan, IranResearch Institute of Communication and Information TechnologyDepartment of Chemical Industry, National University of Skills, Tehran, Iran<p>Epoxy resin is recognized as one of the primary thermosetting polymers due to its mechanical properties, thermal stress resistance, and thermal degradation resistance. It finds extensive applications in critical areas such as coatings, adhesives, molding compounds, aerospace applications, and polymer nanocomposites. Modified iron oxide nanoparticles enhance the distribution and uniformity of the epoxy structure, thereby improving mechanical properties and thermal stability. Research indicates that the use of these nanocomposites can serve as an effective solution in various industries, including construction, radiation protection, and enhancing the safety of polymer materials. Notably, alpha-type iron oxide nanoparticles have garnered increased attention due to their superior flame-retardant properties. Ultimately, these advancements not only contribute to improved material performance but also open new horizons for the development of high-performance, multifunctional materials in the industry. The results of the studies conducted on the morphology of the fracture surfaces of epoxy resin and iron oxide nanoparticles indicate that the distribution of nanoparticles within the epoxy matrix has a significant impact on the mechanical and dielectric properties of these composites. This study investigates the effects of modified iron oxide nanoparticles on the morphology, mechanical properties, thermal stability, and thermal degradation behavior of epoxy resin. Furthermore, recent advancements and significant findings in the field of epoxy nanocomposites containing modified iron oxide nanoparticles will be examined and analyzed.</p>http://irdpt.ir/Article/50130Epoxy Resin Modified Iron Oxide Nanoparticles Morphology Mechanical properties Thermal Degradationper ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332025-091022939articleahmadreza akbarianahmadrezaakbarian@gmail.com1Pedram Manafipmanafi1987@gmail.com2Amirkabir University of Technology, Department of Polymer Engineering<p style="text-align: left;">Flexible polymer-based supercapacitors are one of the key advances in the field of energy storage that have attracted much attention in the last decade due to their unique capabilities. These devices use conductive polymers as the main electrode material, which not only provide flexibility, but also have high electrical conductivity and good chemical stability. These properties make these supercapacitors suitable for wearable electronic devices, flexible sensors, and even biomedical devices. In the design of these types of supercapacitors, optimizing nanoscale structures and using advanced electrolytes are of particular importance to increase storage capacity and cyclic stability. In addition, combining different polymers and hybrid materials can improve the device efficiency. Due to their unique properties, flexible polymer supercapacitors can operate in harsh environmental conditions and offer fast charging and discharging capabilities, which is a major advantage over conventional batteries. Ongoing development in this field includes the design of new materials, efficient manufacturing processes, and innovative methods to improve the performance of these devices. These advances promise broader applications in future technologies and play an important role in realizing the concepts of smart cities, advanced portable devices, and reduced energy consumption. This emerging technology is constantly growing and evolving and has the potential to change the energy storage landscape.</p>http://irdpt.ir/Article/50411Supercapacitors conductive polymers electrode flexibility nanostructureper ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332025-091024155articleMohammad Hossein Ahmadiahmadii4030@gmail.com1jafar Khademzadeh Yeganehjkh.yeganeh@gmail.com21Department of Polymer Engineering, Faculty of Engineering, Qom University of Technology, Qom, Iran<p style="text-align: left;">Biomedical remedial approaches and devices have been transformed by synthetic biodegradable elastomers like polyesters and polyurethanes. A number of biodegradable elastomers and related devices with controllable properties and various functionalities have been created as a result of technological advancements in synthesis and processing. Due to their relatively high maximum elongation and exceptional impact resistance, biodegradable elastomers are capable of withstanding and recovering from repeated deformations at either room temperature or body temperature. Their flexible texture and outstanding elasticity allow them to closely mimic the mechanical characteristics of soft native tissues, providing vital mechanical signals for tissue engineering structures. This study highlights the latest advancements in the synthesis methods, processing technologies, and biomedical applications of biodegradable elastomers which are mainly based on polyester and polyurethane. To meet the diverse needs of biomedical applications, multifunctional biodegradable elastomers are being developed with tailored mechanical properties, controlled biodegradation behavior, improved biocompatibility and bioactivity, as well as the incorporation of smart functionalities. We have then explored the use of biodegradable elastomers across various fields, including cardiovascular, nerve, and bone tissue engineering, as well as their application as bio-adhesives. Despite substantial advances, biodegradable elastomers continue to lack the sophisticated mechanical properties and diverse functionalities necessary for clinical use.</p>http://irdpt.ir/Article/50835Elastomer biodegradable polyester polyurethane Biomedicalper ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332025-091025778articleSahar Abdollahi Baghbanabdollahi-s@icrc.ac.ir1Narges RabbanikhahRabbanikhah.narges@gmail.com2Department of Polymer and Color Engineering, Amirkabir University of Technology, Tehran, Iran.<p style="text-align: left;">This review article examines the methods for improving the performance of silicone coatings for electrical insulators under harsh and polluted environmental conditions. To improve the properties of silicone coatings, the application of micrometric, nanometric, and mixed micro/nanoparticle fillers (inorganic oxides: silica, nanoclay, CaCO₃, ZnO, TiO₂, Ta₂O₅, Co₃O₄, SnO₂, aluminum nitride (AlN), boron nitride, barium titanate, aluminum trihydroxide (ATH) and organic fillers: carbon nanotubes (CNT), multi-walled CNTs, montmorillonite, and graphene oxide) have been investigated. The results revealed that the introduction of nano and micro fillers with optimal ratios such as micro and nanoparticles of silica and AlN in the coating improved the mechanical and tensile strength of the coatings, increased the superhydrophobicity, reduced the effects of aging and degradation caused by UV radiation, thermal and pollution erosion, improved the dielectric strength and surface stability against electrical discharge, reduced the leakage current, and also increased the tracking resistance. Consequently, it was reported that silicone-rubber-ethylene propylene diene monomer rubber coatings containing modified silica nanoparticles, ATH, UV stabilizers, and silicone oil, demonstrated the highest hydrophobicity with improved surface roughness and self-cleaning properties (water drop contact angle: 161&ordm;). Accordingly, these coatings are suitable for high-voltage insulators with high performance (volume resistivity 1.5&times;1017 (&Omega;.cm), surface resistivity 1.5&times;1012 (&Omega;.cm), tracking resistance:500 minutes at 5 KV, breakdown voltage: 145 KV, dielectric constant: 4.4, high fire resistance up to 340 &ordm;C and long service at elevated temperatures) without the requirement for frequent cleaning.</p>http://irdpt.ir/Article/50921Silicon-rubber hydrophobic and self-cleaning coatings Surface modification Micro and nanoparticles Electrical Insulator.per ipstsپژوهش و توسعه فناوری پلیمر ایران 2538-3345 2588-39332025-091027991articleHamidreza Haydarihamidrezaheidari3292@gmail.com1marziyeh hosseinima.hosseini@ippi.ac.ir2iran polymer & petrochemical institute<p style="text-align: left;">Due to its two-dimensional structure and high surface-to-volume ratio, nanoclay creates excellent tensile and rheological properties in nanocomposites. Rubber processing is highly dependent on the curing process and its control, time, temperature, vulcanization rate, and other curing conditions. Among all the methods for preparing nanocomposites, the melt mixing method is used more than other methods. In general, there are three structures for nanocomposites: tactoid,&nbsp;Intercalation, and&nbsp;Exfoliation, and the properties of nanocomposites are highly dependent on the dispersion of nanoparticles and their interaction with the matrix. In this study, the effect of the amount of nanofiller and process conditions on the curing behavior, mechanical properties, and hysteresis of a hybrid blend based on SBR and reinforced with nanoclay and carbon black prepared by melt mixing has been investigated. The results of the curing diagrams of the nanocomposite samples show that with increasing the amount of nanoclay, the curing time will decrease and the curing rate will increase, and increasing the amount of carbon black will lead to a significant reduction in the scorch time and curing time and a significant increase in the curing rate and torque mixing. Also, according to the tensile test results, with increasing the amount of nanoparticles, the mechanical properties have improved, and its further increase will cause a decrease in the mechanical properties. The hystresis diagrams show that with increasing the amount of reinforcements, and especially carbon black, the area under the stress-strain diagram in the loading-unloading mode increases significantly.</p>http://irdpt.ir/Article/51188Styrene Butadiene rubber Nanocomposite Physical and Mechanical Properties Curing Hysteresis