Journal of Polymer Science最新文献

{"title":"A Mechanochemically Synthesized Vitrimer-Like PLA","authors":"Xiaoxi Huang,&nbsp;Yuan Sang,&nbsp;Hailing Liu,&nbsp;Yifeng Sun","doi":"10.1002/pola.70082","DOIUrl":"10.1002/pola.70082","url":null,"abstract":"<div>\u0000 \u0000 <p>Mechanochemistry is an efficient, solvent-reduced, and extra heat-free green chemistry method. In this work, mechanochemistry is applied to the polymerization of PLA. The resulting PLA was esterified with citric acid to obtain a vitrimer-like polymer, which was also carried out via mechanochemistry. These mechanochemistry processes were performed using a planetary ball mill, which is favorable for scale-up synthesis. The synthesized polymer was characterized by NMR and SEC, and the vitrimer-like properties were evaluated by rheology, DSC, TGA, and shape memory behavior.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 7","pages":"1649-1656"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696383","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":"Bio-Based Multilayer Composites Based on Blended Electrospun Fibers and Luffa Cylindrica for Enhanced Low-Frequency Noise Absorption","authors":"Paraskevas Kyriacou,&nbsp;Viktoria Theodorou,&nbsp;Michal Matysík,&nbsp;Iveta Plšková,&nbsp;Ivo Kusák,&nbsp;Theodora Krasia-Christoforou","doi":"10.1002/pol.20251169","DOIUrl":"10.1002/pol.20251169","url":null,"abstract":"<p>This study investigates the acoustic performance of multilayer bio-based composites composed of alternating layers of <i>Luffa Cylindrica</i> (LC) and electrospun cellulose acetate/polyvinylpyrrolidone (CA/PVP) blended microfibers. A principal outcome is that the incorporation of CA/PVP microfibers markedly enhances the sound absorption behavior of the composites. Compared with PVP-free (CA-only) counterparts, the LC/CA-PVP multilayer configuration enables more efficient acoustic wave dissipation and produces a shift of the sound absorption coefficient peak toward lower frequencies, together with a slight increase in average sound absorption. This shift toward lower frequencies is particularly relevant, as traffic and urban noise typically contain a substantial proportion of low-frequency acoustic energy. Overall, the integration of CA/PVP electrospun microfibers into LC-based multilayer composites improves functional acoustic performance without compromising the bio-based nature or lightweight characteristics of the materials. From an application standpoint, these results highlight the potential of the proposed multilayer composites for sustainable noise control, especially in urban and traffic-related settings where effective low-frequency noise attenuation is required. Moreover, the ability to tailor absorption characteristics through the composition of microfibrous layers demonstrates the flexibility and practical relevance of the proposed design strategy.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 7","pages":"1568-1582"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20251169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696411","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":"Enhancing the Functional Properties of Polylactic Acid by Incorporation of Esterified Lignin","authors":"Rogerio Martins Vieira,&nbsp;Emilie Gauthier,&nbsp;Syamak Farajikhah,&nbsp;Hernán Dário Zamora Zamora,&nbsp;Fariba Dehghani,&nbsp;Peter Halley,&nbsp;Michel Brienzo","doi":"10.1002/pol.20251162","DOIUrl":"10.1002/pol.20251162","url":null,"abstract":"<p>Incorporating lignin as an additive is a promising strategy to overcome the limitations of PLA-based composites. This study investigates the effects of adding esterified lignin from banana pseudostem and sugarcane bagasse into a PLA matrix. Composites were produced via melt-compounding followed by compression molding, using two lignin concentrations: 5 wt% and 10 wt%. Thermal analyses revealed a reduction of up to 14.4°C in the glass transition temperature, particularly in samples containing modified lignin. Mechanical properties were also influenced by lignin addition, with the lowest tensile strength (approximately 10.76 MPa) observed in composites containing modified banana pseudostem lignin. However, elongation at break remained unchanged. All lignin-PLA composites exhibited enhanced hydrophobicity compared to neat PLA. Improved cohesion between unmodified sugarcane bagasse lignin and PLA resulted in lower surface roughness, while chemical modification led to more homogeneous banana lignin-based composites. Furthermore, all lignin-containing samples demonstrated a significant enhancement in antioxidant activity, reaching up to 84.9%. Lignin addition also provided complete UV-blocking efficiency, regardless of source, content, or chemical modification. These findings confirm that esterified lignin effectively enhances the performance of PLA, particularly in terms of hydrophobicity, antioxidant capacity, and UV-shielding properties, which is advantageous for non-load-bearing applications where functional performance is prioritized over mechanical reinforcement.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 7","pages":"1625-1637"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20251162","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696333","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":"Algal Biomaterials From Recycled Wastewater Biomass","authors":"Helen E. Wexler,&nbsp;Madison I. Dunitz,&nbsp;Israel Kellersztein,&nbsp;Anthony R. Stephen,&nbsp;Tony,&nbsp;Kai Li,&nbsp;Jamieson M. Brechtl,&nbsp;Shelley Blackwell,&nbsp;Tryg Lundquist,&nbsp;Victoria Orphan,&nbsp;Anil Saigal,&nbsp;Chiara Daraio","doi":"10.1002/pol.20250915","DOIUrl":"10.1002/pol.20250915","url":null,"abstract":"<div>\u0000 \u0000 <p>Fabricating high-performance, binder-free biomaterials from microalgae grown during wastewater treatment is an opportunity in sustainable materials. However, the impact of strain morphology and mechanical preprocessing on material properties remains largely uncharacterized. This study investigates binder-free biomaterials fabricated from wastewater-grown, filamentous <i>Tribonema minus</i> and food-grade, unicellular <i>Chlorella vulgaris</i>. The impact of three mechanical comminution methods (ball mill, mortar-and-pestle, and speed mixer) on the mechanical properties is evaluated. The results demonstrate that feedstock morphology and processing are critical, interacting factors. Under gentle comminution (mortar-and-pestle), filamentous <i>Tribonema</i> biomaterials exhibit significantly higher flexural modulus and strength than unicellular <i>Chlorella</i>. Conversely, high-shear speed mixing diminishes <i>Tribonema</i>'s structural advantage while enhancing <i>Chlorella</i>'s particle packing, leading to a convergence in mechanical properties. All final biomaterials exhibit near-hydrophobic surfaces (contact angles &gt; 85°). This research validates that non-food-competing wastewater algae can be transformed into high-performance biomaterials, yielding materials with densities of ≈1.0–1.1 g/cm³ and flexural moduli ranging from ≈0.3 to 1.0 GPa.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 7","pages":"1583-1595"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696376","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":"Dynamic Linear Polymers via [2π + 2π] Cycloaddition Reactions Using Dicoumarin Monomers","authors":"Mustafa Abdallh,&nbsp;George Simon,&nbsp;Kei Saito","doi":"10.1002/pol.20260001","DOIUrl":"10.1002/pol.20260001","url":null,"abstract":"<div>\u0000 \u0000 <p>Dynamic polymers represent a versatile class of materials that reversibly change their structure and properties in response to external stimuli. These materials offer unique functionalities for applications in sensors, actuators, coatings, and recyclable systems. Topochemical polymerization, a solid-state reaction governed by molecular alignment within a crystal lattice, enables regio- and stereo-selective formation of polymers. However, few examples of dynamic linear polymers exist, and coumarin derivatives have not yet been explored under topochemical conditions. In this study, a series of <i>n</i>-alkyl bis-coumarin monomers is synthesized and investigated for their ability to undergo reversible [2π + 2π] cycloaddition. Monomers with butyl and hexyl spacers form photoactive crystals capable of reversible polymerization and depolymerization under 365 nm and 254 nm irradiation, respectively, while the octyl analogue remains inactive due to excessive olefinic spacing. Structural analysis reveals that crystal packing and solvent-dependent recrystallization critically influence photoreactivity.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 7","pages":"1596-1601"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696377","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":"Effect of Low Molecular Weight Oxidized Materials on Cell Adhesion of VUV-Irradiated Cyclo Olefin Polymer","authors":"Seiichiro Takahashi,&nbsp;Ryo Ihara,&nbsp;Kenichi Mitsuhashi,&nbsp;Akira Aiba,&nbsp;Kenichi Hirose,&nbsp;Kenji Hatakeyama","doi":"10.1002/pol.20250468","DOIUrl":"10.1002/pol.20250468","url":null,"abstract":"<div>\u0000 \u0000 <p>Many polymeric materials lack cell adhesive properties and require surface modification for cell culture use. Vacuum ultraviolet (VUV), plasma, and corona irradiation are widely used surface modification techniques. These treatments are known to cause oxidation and etching of the polymer surface, resulting in improved cell adhesion. It is also known that low molecular weight oxidized materials (LMWOMs) are formed on the polymer surface during this process. However, the effect of LMWOMs on cells has not been investigated. In this study, using X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM), we confirmed that removing LMWOMs from VUV-treated cyclo-olefin polymer (COP) surfaces reduces oxidation and increases surface roughness. This enhances fibronectin (FN) adsorption and cell adhesion. Without LMWOM removal, optimal VUV irradiation time is critical; insufficient or excessive exposure decreases FN adsorption and cell adhesion. Conversely, when LMWOMs were removed, overall adsorption improved regardless of irradiation time, with a 25% increase in adsorption observed at the optimal irradiation time. While wettability, surface topography, and functional groups have been discussed as factors that enhance cell adhesion, this study demonstrates that LMWOMs are also an important factor. This finding provides valuable insights into the optimization of polymer surfaces for cell culture use.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 7","pages":"1638-1648"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696414","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":"Enhancement of PVDF Electroactive Phase Content—Effect of Plasticizer as an Additive","authors":"Sivabalan Kaniapan,&nbsp;Anil Prathuru,&nbsp;Vinoth Ramalingam,&nbsp;Nadimul Faisal","doi":"10.1002/pol.20250937","DOIUrl":"10.1002/pol.20250937","url":null,"abstract":"<p>Polyvinylidene fluoride (PVDF) is a functional polymer with highly desirable electrical and piezoelectric properties. Optimizing its piezoelectric performance requires modifications to its morphology, composition, and electrical characteristics. Plasticizers are commonly known to improve flexibility in polymer materials and are used to facilitate ion transportation in electrolytes, increasing the conductivity. However, inclusion of plasticizer to enhance piezoelectric behavior, primarily by adding flexibility, facilitating better dipole orientation and consequently inducing higher piezoelectricity, was little explored. This study investigates the effect of the addition of ethylene carbonate (EC) as a plasticizer on the piezoelectric performance of PVDF. The PVDF/EC films using the spin-coating method were fabricated with different concentrations of EC loading (from 1 to 9 wt.%). The morphology of the prepared samples was investigated using scanning electron microscopy (SEM) and polarized microscopy studies. The crystalline structure and phase changes were analyzed using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Raman spectroscopy. The thermal behavior of the samples was analyzed through differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The electrical permittivity under different DC frequencies was investigated using an LCR meter. First of its kind, the incorporation of EC plasticizer demonstrates an enhancement of the β-phase due to inter-molecular bonding between the carbonyl group from EC and the hydrogen atom from PVDF, which is crucial for improved dielectric properties. The experiment proves the ability of EC to modify the crystalline structure of PVDF with only polymorphism, which is possible with 2 wt.% of EC in PVDF at 120°C of annealing temperature. These findings establish the potential of plasticizer integration as a cost-effective methodology for applications in sensors and energy storage devices.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 7","pages":"1535-1552"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20250937","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696409","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":"Split Spike Structures of an Amphiphilic Polymer Layer Grafted Onto a Spherical Nanoparticle","authors":"A. S. Ushakova,&nbsp;V. V. Vasilevskaya","doi":"10.1002/pola.70076","DOIUrl":"10.1002/pola.70076","url":null,"abstract":"<div>\u0000 \u0000 <p>The article aims to describe specific split spike structures that can be found in grafted layers of comb-like macromolecules. The split spike was defined here as a filamentous thread-like «solvophobic core-solvophilic shell» aggregate that, at some distance from the grafting surface, disintegrates into thinner filaments due to a decrease in the local density of the grafted layers. An analytical theory is proposed that describes the diversity of stable split structures from amphiphilic A-graft-B macromolecules grafted onto a spherical nanoparticle, the conditions of their formation, and the pathway of their transformation. The proposed theory allowed us to analyze the impact of solvent quality and selectivity, as well as chain grafting density and polymerization degree, to the formation of such structures. The theory interprets the literature experimental data and describes the results of computer simulations. It provides a basis for the designing of nanoparticles with a complex branched surface.</p>\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 7","pages":"1612-1624"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696359","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":"Redox-Active and Electrochromic Aromatic Poly(Ether-Imide)s With Carbazole-Triphenylamine Chromophores","authors":"Wen-Xuan Chen,&nbsp;Sheng-Huei Hsiao","doi":"10.1002/pola.70073","DOIUrl":"10.1002/pola.70073","url":null,"abstract":"<p>A novel bis(ether anhydride) incorporating the carbazolyltriphenylamine (CzTPA) segment, specifically 4,4′-bis(3,4-dicarboxyphenoxy)-4″-(carbazol-9-yl)triphenylamine dianhydride, has been synthesized. Following this, polycondensation with commercially available aromatic diamines led to the formation of a series of electroactive aromatic poly(ether imide)s. All synthesized polymers exhibit excellent solubility in polar organic solvents and can be solution-cast into smooth, flexible thin films. These poly(ether imides) demonstrate glass transition temperatures (<i>T</i>_g) ranging from 251°C to 260°C, with no significant thermal degradation observed below 500°C, indicating their impressive thermal stability. Cyclic voltammetry (CV) measurements reveal two oxidation waves at approximately 1.20 and 1.51–1.63 V, respectively. The first redox process is quasi-reversible, while the second is irreversible. In their neutral state, the cast films appear colorless and transparent, transitioning to pale blue during the first oxidation stage and to light Prussian blue in the second oxidation stage. Furthermore, coupling reactions involving the pendant carbazole units readily occur when the polymers are scanned to 1.8 V during CV measurements. Upon oxidation, the polymer films exhibit moderately high absorption in the near-infrared region.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 7","pages":"1602-1611"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pola.70073","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696358","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":"Synthesis of Monodisperse Low-Crosslinked Polymer Microspheres With Sulfonic Acid by Precipitation Polymerization","authors":"Md Rabiul Alam,&nbsp;Kaito Aburaya,&nbsp;Takuya Sugimoto,&nbsp;Naoki Haraguchi","doi":"10.1002/pola.70071","DOIUrl":"10.1002/pola.70071","url":null,"abstract":"<p>Monodisperse crosslinked polymer microspheres with phenylsulfonate were successfully synthesized via precipitation polymerization of divinylbenzene, styrene, and a styrene dimer with two phenyl sulfonate groups (<b>M</b>). The use of <b>M</b> in polymerization allowed us to obtain monodisperse microspheres even though the molar ratio of total crosslinker was less than 20 mol%. The effects of various polymerization conditions, including the molar ratio of total crosslinker, monomer concentration, initiator concentration, solvent composition, and comonomers, on yield, particle size, and sulfonic acid content were systematically investigated. The number-averaged diameters of the polymer microspheres (<i>D</i>_n) were in the range of 0.59 to 2.30 μm. Small particles were obtained at a high molar ratio of total crosslinker, whereas larger particles were obtained at higher monomer or initiator concentrations. In addition, the yield of microspheres increased with increasing the molar ratio of total crosslinker and monomer concentration. The solvent ratio and comonomer type also markedly influenced the size of the resulting microspheres. After the deprotection of the phenyl sulfonate moieties of the polymer microspheres, followed by acid treatment, monodisperse low-crosslinked polymer microspheres with sulfonic acid were successfully obtained. The synthetic approach is a reliable method for preparing monodisperse low-crosslinked polymer microspheres with sulfonic acid.</p>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 7","pages":"1553-1567"},"PeriodicalIF":3.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pola.70071","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696410","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}