Polymer Bulletin最新文献

{"title":"Incorporating lignin into chitosan-based bioplastics enhances the tensile properties and provides control of swelling and opacity","authors":"Hernan Dario Zamora Zamora,&nbsp;Rogerio Martins Vieira,&nbsp;Henrique Ferreira,&nbsp;Andrij Pich,&nbsp;Michel Brienzo","doi":"10.1007/s00289-026-06466-7","DOIUrl":"10.1007/s00289-026-06466-7","url":null,"abstract":"<div><p>This study focuses on obtaining and characterizing bioplastics prepared with different mass amounts of commercial chitosan and lignin extracted from guava seed cake. The chitosan-lignin bioplastics were produced using the casting technique, and characterized through thermogravimetric analysis, tensile tests, swelling (water absorption), water solubility, and moisture. All bioplastics containing lignin exhibited moisture percentages higher than the only-chitosan sample (15.7%); the formulation with the lignin maximum content (10%) reached the highest content (19.4%). Water solubility did not show significant statistical differences; the average value was 17.4%. The increasing lignin content revealed a strong positive linear correlation (<i>R</i> = 0.95) with opacity, with the maximum one (4.92 mm^− 1) found in the formulation with the highest lignin content. Conversely, the increasing lignin content revealed an inverse linear correlation (<i>R</i> = 0.83) with swelling, reducing it from 276.6% (only chitosan formulation) to 133.5% (formulation with the highest lignin content). The tensile strength of formulations containing lignin was higher than that of the only-chitosan specimen (12.5 MPa). However, the breaking elongation of formulations with lignin (except the formulation with 2% lignin content) was lower than that of the only-chitosan bioplastic (36.6%). According to thermogravimetric analysis, all samples had their mass losses in four distinct steps, the lignin incorporation raised the temperature at which the bioplastics showed their maximum mass losses, and the lowest mass loss rate was observed in the formulation with the highest lignin content. The cryofracture cross-section image for the formulation with the highest lignin content did not exhibit layer formation, therefore the chitosan-lignin in the study condition can originate blends.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"83 7","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00289-026-06466-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, electrical, and electrochemical properties of polyaniline- manganese dioxide (PANI-MnO2) composites","authors":"Muhammad Irfan,&nbsp;Basma A. El-Badry,&nbsp;Nosheen kanwal,&nbsp;Mohamed A. Salem,&nbsp;Mohamed H. Helal,&nbsp;Waseem Abbas","doi":"10.1007/s00289-026-06454-x","DOIUrl":"10.1007/s00289-026-06454-x","url":null,"abstract":"<div><p>We report that PANI-MnO₂ composites were synthesized via an in situ polymerization technique and evaluated for use in charge storage device applications. Structural and morphological analysis confirm a strong interaction between PANI and MnO₂ particles, resulting in a uniform sheet-like morphology. The incorporation of MnO₂ significantly enhanced DC conductivity at temperatures 303–393 K, with charge transport following a three-dimensional variable range hopping (3D-VRH) mechanism. Increasing MnO₂ content synergistically improved the charge transport parameters, including hopping length, hopping energy, and density of states, despite a rise in activation energy. Further, a high specific capacitance of 345 Fg^− 1 at 1 Ag^− 1 is found at PANI-15% MnO₂ electrodes. The energy density of 27 Wh kg^− 1 is observed at 748 W kg^− 1 (power density), with outstanding stability of 99.1% after 4000th charge-discharge cycles. The impedance of pristine PANI ~ 12.4 Ω to PANI-15% MnO₂ ~9.2 Ω of the composite is reduced, which may show a positive effect of MnO₂ particles and PANI for the progress of electrode material.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"83 7","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, characterization and swelling kinetics of empty fruit bunch date palm-based carboxymethyl cellulose blended PVA/PVP hydrogel via microwave radiation","authors":"Yousef M. Alanazi,&nbsp;Abdullah Al Ragib,&nbsp;Chun‑Yang Yin,&nbsp;Mohamed Aboughaly,&nbsp;Mohanad El‑Harbawi","doi":"10.1007/s00289-026-06368-8","DOIUrl":"10.1007/s00289-026-06368-8","url":null,"abstract":"<div><p>In this study, carboxymethyl cellulose (CMC) in combination with polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP) cross-linked with either citric acid (CA) or glutaraldehyde (GA) has been proposed to prepare a noble hybrid hydrogel in different compositions. The introduction of high-frequency microwave irradiation is one of the most prominent features as a distinct comparison between microwave-assisted prepared hydrogels and the conventional hotplate heating method is evident here. The properties of all prepared hydrogels are investigated regarding swelling behaviour, swelling kinetics and gel fraction. The CMC hydrogel cross-linked with PVA and PVP using CA exhibited a high swelling capacity (769.23%), significant gel fraction and a rapid swelling rate constant (6.20 min⁻¹) which adhered to second-order kinetics (<i>R²</i> ≈ 0.99). FTIR analysis confirmed ester linkage formation via a new peak at 1740 cm⁻¹ in CA cross-linked samples while GA cross-linked hydrogels showed ether linkage at 1098 cm⁻¹. SEM revealed interconnected porous structures and thermal analyses (TGA/DSC) demonstrated high thermal stability with an onset decomposition temperature of 281 °C, glass transition temperature (T_g) of 174.2 °C and melting temperature (T_m) of 210.8 °C. XRD indicated reduced crystallinity (CrI = 30.26%) which confirmed successful hydrogel formation. Overall, the hydrogel formulations combining natural and synthetic polymers exhibited excellent physicochemical properties that support potential future applications.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"83 7","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: Enhanced tetracycline removal from aqueous solutions via novel Cu/Fe layered double hydroxide/polyurethane composites: comprehensive characterization, mechanistic insights: modeling and green chemistry evaluation","authors":"Rehab Mahmoud,&nbsp;Abdullah S. Alawam,&nbsp;Ahmed A. Allam,&nbsp;Asmaa Elrafey,&nbsp;Abdelatty M. Radalla,&nbsp;Doaa abd El Tawab,&nbsp;Olfat saied,&nbsp;Samar M. Mahgoub","doi":"10.1007/s00289-026-06440-3","DOIUrl":"10.1007/s00289-026-06440-3","url":null,"abstract":"","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"83 7","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lignin-alginate hydrogels for advanced wound dressings: antioxidant, antimicrobial, and biocompatible platforms","authors":"Seyedamirhossein Tahouri,&nbsp;Fatemeh Gholami,&nbsp;Arezoo Khosravi,&nbsp;Atefeh Zarepour,&nbsp;Marco Cordani,&nbsp;Ali Zarrabi","doi":"10.1007/s00289-026-06443-0","DOIUrl":"10.1007/s00289-026-06443-0","url":null,"abstract":"<div><p>Chronic wounds remain as a major clinical and economic challenge, requiring advanced materials that can both support tissue regeneration and effectively prevent infection. Alginate-based dressings are widely used due to their excellent biocompatibility, high absorbency, and gel-forming ability, which help maintain a moist environment favorable for healing. However, these systems inherently lack strong antioxidant and antimicrobial properties. In this context, the incorporation of lignin, a naturally abundant and phenolic-rich biopolymer, offers a promising strategy to overcome these limitations by introducing intrinsic radical scavenging activity, enhanced antibacterial performance, and improved mechanical strength. In this review, we provide a focused and comprehensive overview of lignin-alginate hydrogels as multifunctional wound dressing materials. Unlike previous reviews that discuss lignin- or alginate-based systems individually, this work specifically emphasizes their synergistic integration and the resulting enhancements in hydrogel performance. We first outline the fundamental properties of hydrogels that make them suitable for wound healing applications, followed by detailed discussions on the individual characteristics of alginate and lignin. Furthermore, recent advances in formulation strategies, crosslinking approaches, and multifunctional design are critically discussed, with a focus on improving mechanical stability, exudate management, and controlled therapeutic release. Finally, key challenges related to reproducibility, large-scale production, and clinical translation are highlighted, along with future perspectives emphasizing sustainability and personalized wound care. According to these data, lignin-alginate hydrogels could be considered as a promising next-generation platform for developing sustainable, effective, and multifunctional wound dressing systems.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"83 7","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00289-026-06443-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of CO2 laser treatment on interfacial properties of quartz fibre for 3D printed sandwich composite","authors":"Aditya Nair,&nbsp;Shrinath Mote,&nbsp;Balasubramanian Kandasubramanian,&nbsp;Jigar Patadiya,&nbsp;Shruti Gupta,&nbsp;Amol Indalkar,&nbsp;Pankaj K. Bhujbal,&nbsp;Gautam Mangalampalli","doi":"10.1007/s00289-026-06391-9","DOIUrl":"10.1007/s00289-026-06391-9","url":null,"abstract":"<div><p>This research investigates the enhancement of interfacial bonding in quartz fibre-reinforced polymer composites through CO₂ laser surface treatment. Quartz fibres, known for their low density and high strength, offer significant advantages over traditional carbon and glass fibres in terms of oxidation resistance and lightning strike protection. However, their inert nature poses challenges for effective adhesion to polymer matrices. In this study, laser treatment is employed to induce surface roughness, increase surface energy and free functional groups on the fibre surface (surface modification), after which the laser parameters were selected. The integration of Direct Ink Writing (DIW) and Fused Deposition Modelling (FDM), facilitates the fabrication of sandwich structures that leverage the strengths of quartz fibres within an ABS polymer matrix. Mechanical testing, including Tensile and Izod impact tests, reveals that selected laser treatments significantly enhance adhesive bonding without compromising fibre integrity, achieving a peak tensile modulus of 622.12 MPa and impact resistance of 192.61 J/m. These results give valuable insights into the application of CO₂ laser treatment for developing high-performance fibre-reinforced composites, highlighting its potential in advanced manufacturing processes.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"83 7","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of flexible planar micro-supercapacitors with high specific surface area by laser induced graphene","authors":"Dun Wu,&nbsp;Zhaolei Li,&nbsp;Dong Wang,&nbsp;Jiaqi Liu,&nbsp;Yuxin Chen,&nbsp;Xiangyu Lu,&nbsp;Junfeng Cheng,&nbsp;Chunlin Liu","doi":"10.1007/s00289-026-06407-4","DOIUrl":"10.1007/s00289-026-06407-4","url":null,"abstract":"<div><p>With the rapid development of wearable electronic devices and flexible energy storage devices, planar micro-supercapacitors (MSCs) have attracted great attention as a new type of energy storage devices in industrial applications and scientific research. However, the complex fabrication process, weak substrate stability, and low specific capacitance of MSCs hinder their widespread application. In this work, we proposed a simple laser-induced graphene (LIG) to create rectangular electrode patterns on polyimide (PI) film substrate, succeeding in fabricating high-performance flexible planar MSCs. This approach offers a more convenient process flow and lower fabrication costs. Surprisingly, the MSCs exhibit good cycling characteristics and durability, with the area ratio of supercapacitors up to 25.18 mF cm-2 at a current density of 0.1 mA cm-2. Furthermore, with increased energy density, the complex of supercapacitor devices was able to light a square alarm clock for about two minutes. Thanks to the high specific surface area and high conductivity of the unique crystal structure, the MSCs exhibit great potential applications in electronic information, flexible electronics, storage energy and other fields.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"83 7","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ambient temperature adjusting effects on jet dynamics and transition in polypropylene melt electrospinning","authors":"Jihwan Lim,&nbsp;Eunji Moon,&nbsp;Minseo Kim,&nbsp;Han Seong Kim","doi":"10.1007/s00289-026-06422-5","DOIUrl":"10.1007/s00289-026-06422-5","url":null,"abstract":"<div><p>Rapid cooling and solidification of polymer melts fundamentally limit jet stretching in melt electrospinning, particularly for polypropylene, which exhibits strong temperature dependent rheological behavior. In this study, the influence of ambient temperature on melt viscosity evolution, droplet formation, jet instability transition, and fiber morphology were systematically examined in polypropylene melt electrospinning. Within the processing range, the melt viscosity of polypropylene increased as the temperature decreased from 190 to 160 °C, suggesting a limited rheological window for stable jet deformation. Elevating the ambient temperature from room temperature to 120 °C effectively delayed viscosity growth, promoted transition from buckling dominated motion to whipping behavior between 80 °C and 90 °C, and enhanced electrohydrodynamic stretching. As a result, fiber diameter was significantly reduced, and more uniform fiber structures were obtained. Maintaining an ambient temperature of at least 90 °C stabilized the whipping regime and facilitated inter-fiber bonding. At 120 °C, regulation of ejection pressure further controlled melt throughput, reducing average fiber diameter from 9.66 ± 2.13 μm at 4 kPa to 2.50 ± 3.00 μm at 0 kPa, where the possibility of nanofiber formation was observed. However, excessively low pressure resulted in discontinuous spinning and increased diameter variability, demonstrating that an optimal balance between ambient temperature and ejection pressure is required. These results provide quantitative insight into how the ambient thermal environment primarily governs jet instability and fiber refinement, while ejection pressure modulates melt throughput within this thermally defined processing window.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"83 7","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of novel eco-friendly alkyd resin for weather resistance and durable enamel paint","authors":"Abdullah Arshad,&nbsp;Murid Hussain,&nbsp;Parveen Akhter","doi":"10.1007/s00289-026-06434-1","DOIUrl":"10.1007/s00289-026-06434-1","url":null,"abstract":"<div><p>The demand for sustainable coating has increased significantly and this impelled us to explore the challenges introducing an eco-friendly alkyd resin. We developed a high-performance resin for our enamel paints that would stand up to the weather and last based on renewable materials such as vegetable oils and bio-based polyols with a low environmental footprint. We carried out all tests on the new resin including acid value, viscosity, dry time and adhesion. The enamel paint went through both accelerated weathering and 12 months of actual outdoor exposure to assess weathering resistance. The results showed outstanding UV stability and very little chalk and color fade versus typical alkyd paints. The gloss retention was better than expected due to optimal cross-linking density and antioxidant properties of the resin. Abrasion resistance was done according to ASTM D4060 and the impact resistance according to ASTM D2794. We achieved a pencil hardness of 2 H and good flexibility (1 mm conical mandrel bend test). The chemical resistance was assessed according to solvents, acids and alkalis and showed very little film damage which indicated excellent performance under extraordinarily tough conditions. In this study the enamel paint has superior mechanical durability (2 H pencil hardness, high abrasion/impact resistance), strong UV resistance (&gt; 90% gloss retention after 1000 h QUV testing) were among the many outstanding qualities of the synthesized resin. Tests for outdoor and accelerated weathering verified that there was no chalking and little color fading after a year.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"83 7","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Humic acid–loaded pHEMA cryogels as an antimicrobial platform for MRSA-infected diabetic foot: in vitro, in vivo, and molecular docking studies","authors":"Mehmet Çimentepe,&nbsp;Özge Öztürk Çimentepe,&nbsp;Burcu Demirbağ,&nbsp;Kemal Dogan,&nbsp;Büsra Hord,&nbsp;Adem Necip,&nbsp;Akın Yiğin,&nbsp;Yusuf Cakmak,&nbsp;Metin Yıldırım","doi":"10.1007/s00289-026-06424-3","DOIUrl":"10.1007/s00289-026-06424-3","url":null,"abstract":"<div><p>Diabetic foot infections complicated by methicillin-resistant Staphylococcus aureus (MRSA) remain a major clinical challenge due to impaired wound healing and limited effectiveness of conventional antibiotic therapies. In this study, humic acid (HA)–loaded p(HEMA-GMA) cryogels were successfully synthesized and evaluated as a multifunctional wound dressing platform for the treatment of MRSA-infected diabetic foot wounds. The structural and chemical characteristics of the cryogels were confirmed by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The HA-loaded cryogels exhibited a high swelling ratio of approximately 97%, indicating excellent exudate absorption capacity. Biocompatibility and hemocompatibility assessments demonstrated that the cryogels were safe for biomedical applications. In vitro antibacterial studies revealed that HA2-p(HEMA-GMA) achieved 93.9 ± 0.85% inhibition of MRSA growth based on time-kill kinetics. SEM analyses further confirmed the disruption of MRSA biofilm structures and severe deformation of bacterial morphology. In vivo therapeutic efficacy was evaluated using an MRSA-infected diabetic rat foot wound model, where treatment with HA2-p(HEMA-GMA) resulted in a significant wound area reduction of 94.5 ± 0.7%. Molecular docking analysis provided preliminary insights into potential interactions, showing a favorable binding affinity of humic acid toward the 2 × 3 F protein, with a docking score of − 8.358 kcal/mol. Overall, these findings indicate that HA-loaded p(HEMA-GMA) cryogels effectively modulate the wound microenvironment, suppress bacterial proliferation, and accelerate wound healing under diabetic and infected conditions. This multifunctional cryogel system represents a promising alternative therapeutic strategy for the management of MRSA-infected diabetic foot wounds.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"83 7","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00289-026-06424-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147796743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}