Polymer最新文献

{"title":"Complex coacervation systems based on a novel natural polymer (Brea gum) for encapsulation of hydrophobic materials","authors":"Virginia Castel, Pablo J. Luggren, Daiana Barcarolo, Silvana A. Fioramonti, María del Pilar Buera","doi":"10.1016/j.polymer.2025.128742","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128742","url":null,"abstract":"Brea gum (BG) is an underexplored polymer with promising functional properties. While structurally similar to gum arabic, BG contains a higher protein fraction (5.9–7.5 %), which enhances its interfacial activity, improving emulsifying and encapsulating performance. These characteristics position BG as a potential, more cost-effective alternative to gum arabic, whose widespread use is often limited by high and unstable pricing.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"200 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hierarchically porous carbon monoliths from commercial membrane templates","authors":"Sriram Murali, William R.T. Tait, Chao-Hua Hsu, Ulrich B. Wiesner","doi":"10.1016/j.polymer.2025.128748","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128748","url":null,"abstract":"High surface area porous carbon materials have uses in electrochemical energy storage (EES) systems because of their transport properties, relatively low cost, and flexible architectures. In these materials, there is a tradeoff between smaller micro/mesopores for high surface area and larger macropores for fast transport, both of which are necessary for EES applications. An optimal material would balance a high surface area with efficient transport pathways by combining these different pore sizes. In this work, a single-step, low cost, scalable technique is demonstrated to access such hierarchically structured porous carbons where commercial nylon membranes are first infiltrated with carbon precursors and polymer additives and then heat treated. SEM imaging and nitrogen physisorption measurements of the final materials show small and large pores of about 10 nm and 400 nm, respectively. Nitrogen physisorption reveals a high surface area largely due to micropores. Four-point probe conductivity shows a conductivity of 9.25 S/cm, rendering these carbons suitable for EES applications. Electrochemical testing finally demonstrates an ability to act as a traditional carbon electrode when cycled against lithium metal. Results suggest that these polymer membrane-derived porous carbons may be a potential candidate for next generation EES systems.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"23 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of amide-functionalized furan-based polyesters via a combined ring-opening polymerization and melt polycondensation strategy","authors":"Yihuan Liu ,&nbsp;Zhen Li ,&nbsp;Changqi Zhang ,&nbsp;Dong Qian ,&nbsp;Ning Xu ,&nbsp;Yongxiang Sun ,&nbsp;Xin Hu ,&nbsp;Kai Guo ,&nbsp;Ning Zhu","doi":"10.1016/j.polymer.2025.128747","DOIUrl":"10.1016/j.polymer.2025.128747","url":null,"abstract":"<div><div>Aliphatic polyesters exhibited excellent biodegradability and biocompatibility, which have been utilized in various fields. However, their practical implementation in high-performance applications, particularly those requiring elevated temperature processing, remains constrained by inherent limitations in thermal stability, which compromises structural integrity during process and accelerates hydrolytic degradation under operational stresses. In this work, a series of high-performance polyesters with significantly improved thermal stability were prepared by strategic incorporation of amide bonds and furan moieties within the polymer backbone. The 1,5-pentanediamine (PDA) initiated ring-opening polymerization (ROP) of cyclic monomers was systematically explored, enabling the synthesis of amide-functionalized aliphatic polyester diols with controlled molecular weights (1.10–15.55 kg/mol), including poly(ε-caprolactone), poly(δ-valerolactone) and poly(<span>l</span>-lactide). These polymers exhibited narrow dispersities (<em>Ð</em>_M = 1.08–1.20) and high amide fidelity (up to 98 %). Kinetic studies indicated the well-controlled feature of PDA initiated ROP. Subsequently, melting polycondensation of PCL diol and dimethyl 2,5-furandicarboxylate (DMFDCA) was conducted to obtain furan-amide modified PCL (PCLF). The thermal decomposition temperature (<em>T</em>_d,0.5 %) of the obtained PCLF showed a 54 °C enhancement relative to PCL diol. These results demonstrate that the introduction of amide groups and furan rings constitutes a powerful approach to enhance the thermal stability of various polymers.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"334 ","pages":"Article 128747"},"PeriodicalIF":4.1,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Strength, conductive dual-network nanocomposite hydrogel for multi-substrate adhesion and enhanced wearable sensor performance","authors":"Nan Lu, Haolin Kang, Yan Lu, Ying Li, Jing Li, Yuhua Xue, Hanxun Qiu","doi":"10.1016/j.polymer.2025.128743","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128743","url":null,"abstract":"As a promising functional material, hydrogels have attracted widespread attention in the field of flexible wearable sensors due to their excellent biocompatibility and mechanical strength. However, the concurrent incorporation of robust mechanical properties, self-adhesion, and strain responsiveness into a single hydrogel system remains a formidable task in the field. This study proposes an innovative approach for fabricating a high-strength, stretchable, and self-adhesive polyacrylamide/polyvinyl alcohol dual-network nanocomposite hydrogel to address the demands of high-precision strain sensors. By performing in situ photo-polymerization of acrylamide in a precursor solution containing polyvinyl alcohol and bacterial cellulose, the tensile properties of the material were significantly improved. Additionally, the introduction of sodium chloride enhances the hydrogel's mechanical strength and conductivity via the Hofmeister effect, which greatly enhancing the hydrogel's mechanical and electrical performances. The hydrogel demonstrated a maximum tensile strain at fracture of 1019% and a maximum fracture stress of 406 kPa, with toughness and Young's modulus reaching 2.14 MJ/m<ce:sup loc=\"post\">3</ce:sup> and 0.981 MPa, respectively, indicating excellent tunable mechanical characteristics. Furthermore, the hydrogel exhibited remarkable adhesion to various substrates, including wood, glass, metal, and skin, demonstrating extensive application potential. The introduction of an ion network ensured stable conductivity and strain sensitivity, enabling the hydrogel to achieve precise monitoring of joint movements across multiple human body parts, as showcase outstanding application prospects in wearable sensor technology.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"3 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailoring polyamideimide and polyetherimide membrane characteristics by experimental and mesoscale model approach for selective gas separation","authors":"Fahmi Anwar, Tarun S.S., G. Arthanareeswaran, Mangalaraja Ramalinga Viswanathan","doi":"10.1016/j.polymer.2025.128734","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128734","url":null,"abstract":"Conventional gas separation techniques require substantial energy due to the complex molecular interactions involved. Polymer-derived carbon membranes stand out for their tunable pore structures and selective molecular sieving capabilities. This study investigates PAI/PEI-based membranes for gas separation, employing the Flory-Huggins model to analyze pore formation. PAI/PEI solutions were systematically varied from 0 to 100 wt.% to determine the optimal blend ratio. Subsequently, the pyrolysis behavior of these membranes was examined, with thermodynamic parameters χ = 2 and N<ce:inf loc=\"post\">p</ce:inf> = 69, to target specific structures. Elemental analysis confirmed the presence of carbon, hydrogen, and nitrogen, which plays a crucial role in controlling membrane swelling and hydrophilicity. Contact angle measurements revealed a hydrophobic character, with a value of 75° for the carbon membrane pyrolyzed at 800°C. Notably, the 25/75 wt.% PAI/PEI blend, subjected to pyrolysis at 800°C, exhibited an asymmetric structure with a pore size of 3.7 Å, facilitating efficient gas permeation. This optimized membrane demonstrated promising performance for gas purification, further validated through mesoscale modeling. Additionally, this study explored the impact of pyrolysis parameters such as temperature, ramp rate, and blend concentration on the resulting membrane characteristics with modeling improving pore efficiency and saving resources. The top-surface morphology of the carbon membranes displayed a well-defined honeycomb structure with abundant pores, outperforming other blends and meeting industrial gas separation requirements through a strategically modeled membrane design. These findings provide a foundation for the scalable production of high-performance carbon membranes tailored for specific gas separation applications. The integration of experimental and modeling approaches offers a predictive framework for designing next-generation membrane systems.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"4 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PMMA reinforced with high-Z fillers for gamma radiation shielding: synthesis and Monte Carlo simulations","authors":"Mahdieh Mokhtari Dorostkar, Akbar Abdi Saray","doi":"10.1016/j.polymer.2025.128700","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128700","url":null,"abstract":"Polymer composites are increasingly being explored for radiation shielding relying on their light weight, ease of manufacturing, and flexibility. Poly (methyl methacrylate) (PMMA), which is already widely used in medical and industrial applications, was selected for this study due to its transparency and stability. The goal was to investigate how well PMMA can attenuate gamma radiation, both on its own and when reinforced with high-Z fillers.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"27 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Room-Temperature Self-Healing Cholesteric Liquid Crystal Elastomer with Mechanochromism and Tunable Circularly Polarized Reflection","authors":"Yuzhou Chen, Zhigang Ran, Yaping Wang, Wenzhu Cao, Yuelan Lv, Yongjun Liu","doi":"10.1016/j.polymer.2025.128746","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128746","url":null,"abstract":"Cholesteric Liquid Crystal Elastomers (CLCE) are attracting attention for their controllable nanoscale helical reflective structures without requiring complex nanofabrication. However, their practical applications are limited by their robust covalent cross-linked networks. To address this, we introduce dynamic covalent boronate ester bonds into the CLCE network, creating a novel class of CLCE. This new material shows a reflection band shift from 600 nm to 520 nm under mechanical stress and excellent reversibility in stretching cycles. Notably, beyond 40% strain, the single circularly polarized reflection transitions to dual reflections. In addition, CLCE exhibit excellent self-healing ability with self-healing rates of 85.83%±7.92% and 89.63%±4.30% after 24 h at room temperature or 90 °C, respectively, and can support loads up to 1500 times its weight. This work offers a simple method for fabricating photonic crystal films with wide-range mechanochromic responses, tunable circular polarization selectivity, and efficient self-healing, promising applications in smart photonic camouflage and adaptive optical systems.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"23 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microscopic displacement features of polymeric surfactant flooding: a microfluidic study","authors":"Hong-ze Gang, Qian-qian Chen, Zhi-qing Su, Chen Chen, Shi-zhong Yang, Ying-cheng Li, Bo-Zhong Mu","doi":"10.1016/j.polymer.2025.128744","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128744","url":null,"abstract":"Polymeric surfactants possess properties of both of polymer and surfactant in solution thickening and interfacial tension reducing, overcomes the chromatography separation of polymer-surfactant flooding, and shows potential application in chemical enhanced oil recovery as an alternative to the binary blend of polymer and surfactant. In this study, viscosity thickening ability and property in reducing interfacial tension of three homologues of polymeric surfactant that have different fractions of activity unit are studied. The displacement performance of the polymeric surfactants in displacing simulated oil within two-dimensional porous media have been comprehensively determined in pore scale. Displacement efficiency and invasion pattern of polymeric surfactant solutions, forms and fractions of residual oil within different pore structures are quantitatively analyzed, and the obtained data are compared with those of polymer. Results show that viscosities of solutions are thickened using polymeric surfactants and the interfacial tension of crude oil/formation water is reduced to 0.0026 mN/m - 0.23 mN/m. Displacement results show that polymeric surfactants have superiority in displacing simulated oil within dual-permeability porous media compared with polymer, and simulated oil within low permeability region is continuously displaced even after the main flow route forms in the high permeability region. As for the displacements within rock porous media, polymeric surfactants displacements show higher microscopic displacement efficiencies than that of polymer displacement, which means higher displacement efficiency within swept area. This study provides properties of polymeric surfactants in displacing oil and strengthens the potential application of polymeric surfactants in enhancing oil recovery.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"35 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Healable and recyclable supramolecular poly(urethane-urea) elastomers with high mechanical robustness, low hysteresis, fatigue resistance and antibacterial based on dynamic double crosslinked networks","authors":"Xionghui Wu, Qihui Tang, Yichao Hu, Yaling Lin, Anqiang Zhang","doi":"10.1016/j.polymer.2025.128745","DOIUrl":"https://doi.org/10.1016/j.polymer.2025.128745","url":null,"abstract":"Polyurethane elastomers, characterized by their exceptional mechanical properties, self-healing capabilities, recyclability, and multifunctionality, have found extensive applications in the fields of tissue engineering, medical health, and flexible electronics. However, attaining mechanical robustness, low hysteresis, fatigue resistance, self-healing, and recyclability through existing network structures presents a significant challenge. In this study, a supramolecular poly(urethane-urea) elastomer featuring a double crosslinked network with dual dynamic bonds is developed by incorporating imidazolidinyl urea (IU) as a multiple hydrogen-bonding motif and dynamic disulfide bonds into supramolecular networks. Owing to this structural feature design strategy, the supramolecular poly(urethane-urea) elastomer exhibits remarkable properties, including high strength (50.8 MPa), ultrahigh toughness (932 MJ/m<ce:sup loc=\"post\">3</ce:sup>), excellent fracture energy (195.6 kJ/m<ce:sup loc=\"post\">2</ce:sup>), low hysteresis (10.8 %), and outstanding anti-fatigue properties, as evidenced by cyclic tensile testing. Furthermore, the dynamic disulfide bond and reversible hydrogen bonding dual networks bestow the elastomers with favorable self-healing properties and recyclability. Additionally, due to the synergistic effect of IU and elemental S, the polymer film also demonstrates excellent antibacterial properties against Gram-positive <ce:italic>Staphylococcus albus</ce:italic> and Gram-negative <ce:italic>Escherichia coli</ce:italic>, while maintaining low toxicity to mouse fibroblast cells (L929). Moreover, the fabricated sensor exhibits long-term stability and can sensitively detect the bending motion of human joints, attributable to the stable double crosslinked networks. This study showcases the design of self-healing and recyclable polyurethane elastomers with high mechanical robustness, low hysteresis, fatigue resistance, and antibacterial properties, thereby providing a novel approach for the development of medical and electronic materials in the future.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"13 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cellulose nanocrystal/phytic acid-enhanced non-isocyanate polyurethane foams","authors":"Huimin Ren ,&nbsp;Qingyu Liao ,&nbsp;Ziyu Zhou ,&nbsp;Shuna Gao ,&nbsp;Yixin Wang ,&nbsp;Xu Du ,&nbsp;Baihua Yuan ,&nbsp;Hongbin Zhang","doi":"10.1016/j.polymer.2025.128740","DOIUrl":"10.1016/j.polymer.2025.128740","url":null,"abstract":"<div><div>Carbon dioxide-derived non-isocyanate polyurethane (NIPU) foams have attracted wide attention because of their remarkable benefits for sustainable development and green production. While progress has been made in synthesizing NIPU to replace petroleum-based counterparts, challenges persist in achieving high-performance, multifunctional, and recyclable NIPU foams through an eco-friendly foaming process. In this study, we present a green fabrication protocol employing a solvent-free process with HFO-1233zd(E) as an eco-friendly blowing agent, foaming at mild foaming temperatures that reduce the impact on the environment. For the first time, we propose a method that combines renewable biomass components—cellulose nanocrystals (CNC) and phytic acid—with NIPU. This combination synergistically enhances mechanical strength (showing a threefold improvement compared to CNC-free foams), flame retardancy (exhibiting self-extinguishing behavior), thermal stability (with a 15 % residual mass), and unconventional fluorescence properties. A systematic investigation using small-amplitude oscillatory shear rheological analysis allowed for precise modulation of the critical balance between gelation kinetics and foaming dynamics. Through this optimized protocol, we overcome the limitation of NIPU foams, which traditionally served a single function, by simultaneously achieving thermal insulation, flame resistance, and fluorescence. The catalyst-free circularity of the process enables foam reprocessing through the presence of abundant hydroxyl groups and autocatalytic tertiary amines of PEI, eliminating the need for additional catalysts. The biomass-derived additive system, combined with dynamic covalent networks, establishes a sustainable paradigm for developing advanced multifunctional foams, thereby broadening their applications in fields such as architecture, home furnishing, shipping, and packaging.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"334 ","pages":"Article 128740"},"PeriodicalIF":4.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144488841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}