Journal of Polymer Research最新文献

{"title":"Influence of cellulosic fiber structures on electron beam-induced in-situ graft polymerization of glycidyl methacrylate","authors":"Amol G. Thite,&nbsp;Kumar Krishnanand","doi":"10.1007/s10965-026-05170-4","DOIUrl":"10.1007/s10965-026-05170-4","url":null,"abstract":"<div><p>The cellulose chemistry of cotton and viscose rayon fibers is the same, yet they differ greatly in their crystallinity, molecular organization, and accessibility of reactive hydroxyl groups. These structural differences can influence the generation of free radicals and monomer diffusion during electron beam (EB) irradiation, thereby altering the effectiveness of graft polymerization. Therefore, in this study, EB-induced in-situ free-radical graft polymerization of glycidyl methacrylate (GMA) onto cotton and viscose rayon cellulosic fabrics was carried out under identical processing conditions, and the resulting fabrics were compared for various properties. In both cases, the degree of grafting found increased with EB dose and GMA concentration. However, the viscose rayon fabrics showed higher grafting efficiency than cotton due to their amorphous structure. SEM and ATR–FTIR analyses confirmed successful grafting of poly(GMA) onto both cellulosic fabric surfaces. Further, the alterations in tensile strength, air permeability, and stiffness of cotton and viscose rayon fabrics were influenced by the degree of grafting and the structural differences between them.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"33 11","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular dynamics and experimental investigation of TOTM-plasticized EPDM rubber for sealing-related mechanical performance","authors":"Wanjia Sheng,&nbsp;Yanfeng Xing,&nbsp;Fuyong Yang,&nbsp;Juyong Cao,&nbsp;Ying Wang,&nbsp;Xiaobing Zhang","doi":"10.1007/s10965-026-05165-1","DOIUrl":"10.1007/s10965-026-05165-1","url":null,"abstract":"<div><p>Trioctyl trimellitate (TOTM) was investigated as a plasticizer for ethylene propylene diene monomer rubber (EPDM) using atomistic molecular dynamics simulations and tests on binary hot-pressed specimens containing 0–30 wt% TOTM. The study examines whether local packing and segmental mobility change in the same direction during plasticization. The fractional free volume decreased from 15.3% for neat EPDM to 13.5% at 15 wt% TOTM, while the finite-time mean square displacement generally increased. These contrasting responses are consistent with interchain void filling occurring alongside reduced constraints on segmental rearrangement. Interaction-energy distributions, coordination-number profiles, and radius of gyration (<span>(:{R}_{g})</span>) provide complementary evidence for this interpretation, although they do not establish plasticizer aggregation or changes in entanglement density. Simulated and experimental tensile responses both indicate composition-dependent softening. The compression set decreased from 37.5% for neat EPDM to 32.7% at 20 wt% TOTM and increased to 34.7% at 30 wt%. Considering tensile deformability and compressive recovery together, exploratory Pareto screening identifies the 15 and 20 wt% formulations as the non-dominated set based on the mean experimental values. Accordingly, 15–20 wt% TOTM is retained as a preliminary composition-screening range rather than a statistically unique optimum. The findings apply to the present uncrosslinked binary system and do not demonstrate leakage resistance or long-term sealing durability.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"33 11","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radical С-H activation reactions as the main pathway of free-radical polymerization of vinylmethylpyrazoles in a bulk","authors":"Artem Alekseevich Rybyan,&nbsp;Nikolai Andreevich Ovchinnikov,&nbsp;Hao Siying,&nbsp;Yulia Viktorovna Bilichenko,&nbsp;Nataliya Evgenievna Borisova","doi":"10.1007/s10965-026-05163-3","DOIUrl":"10.1007/s10965-026-05163-3","url":null,"abstract":"<div><p>The regularities of free-radical polymerization and the molecular-weight distribution (MWD) of poly(1-vinyl-3(5)-methylpyrazoles) (80:20) in bulk initiated by azobisisobutyronitrile were investigated by UV spectroscopy and gel permeation chromatography (GPC). Using DSC under dynamic experimental conditions, the heat effect of the polymerization of 1-vinyl-3(5)-methylpyrazole was determined to be 44 kJ/mol and 61 kJ/mol for 1-vinyl-3,5-dimethylpyrazole. From the analysis the NMR spectra of the synthesized polymers and and their polymerization kinetics, it was established that the hydrogen atom at the 3-position of the pyrazole ring can be substituted by alkyl groups via a radical mechanism, causing chain transfer to monomer. From the GPC data for poly(1-vinyl-3(5)-methylpyrazole), chain transfer constants to monomer were obtained by linearizing the distribution of macromolecules according to the number of units, and were also calculated using the Mayo equation. The structure of the resulting poly(1-vinyl-3(5)-methylpyrazole) was studied by FTIR spectroscopy and ¹H and ¹³C NMR spectroscopy, revealing signals corresponding to substitution at the 3-position of the carbon atom in the poly(1-vinyl-3(5)-methylpyrazole). According to TGA and DSC data, poly(1-vinyl-3(5)-methylpyrazole) is stable up to 400 °C and has a glass transition temperature of 91–99 °C, which opens up opportunities for their use as components of solid-state batteries.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"33 11","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Taguchi-based optimization of stacking sequence and fiber orientation for hybrid natural fiber epoxy composites","authors":"Timothy K Mulenga,&nbsp;Sanjay Mavinkere Rangappa,&nbsp;Suchart Siengchin","doi":"10.1007/s10965-026-05149-1","DOIUrl":"10.1007/s10965-026-05149-1","url":null,"abstract":"<div><p>The optimization of processing parameters for natural fiber composites is essential to accelerate the transition of these sustainable materials from laboratory research to high-performance industrial applications. In this work, the effect of stacking sequence and fiber orientation on the mechanical properties of pineapple leaf fiber (PALF)/hemp fiber reinforced hybrid epoxy composites was investigated using the Taguchi and grey relational analysis (GRA). Sixteen four-ply PALF/hemp hybrid epoxy laminates with four stacking sequences (HHPP, HPPH, PHHP, HPHP) and four fiber orientations ([0°]₄, [0°/45°]ₛ, [45°/0°]ₛ, [0°/45°/0°/45°]) were fabricated by the hand lay-up and characterized in terms of density and void content, tensile, flexural and impact properties. Scanning electron microscopy was used to identify fracture modes at the fiber-matrix interface. The PHHP/[0°]_s configuration gave the highest tensile strength (60.64 MPa), while HPPH/[0°/45°/0°/45°] and HPPH/[0°/45°]_s gave the highest flexural strength (92.6 MPa) and impact strength (10.79 kJ/m²), respectively. Analysis of variance identified fiber orientation as the only statistically significant factor (<i>P</i> = 0.032), contributing 48.02% to the tensile strength. GRA identified HPPH/[0°]_s as the globally optimal parameter combination. The measured mechanical properties fall within the property range reported for other hand lay-up epoxy-based natural fiber composites for non-structural automotive interior applications.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"33 11","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of NSAIDs anti-inflammatory activity through conjugation with Schiff-base cyclotriphosphazene dendrimer","authors":"Elizabeth Meenink,&nbsp;Ziad Mohamed,&nbsp;Adnan Murad Bhayo,&nbsp;Ethan Anh Tuan Nguyen,&nbsp;Marya Ahmed,&nbsp;Amani A. Abdelghani","doi":"10.1007/s10965-026-05159-z","DOIUrl":"10.1007/s10965-026-05159-z","url":null,"abstract":"<div><p>A series of seven first-generation cyclotriphosphazene-based dendrimers incorporating Schiff-base linkages and conjugated to nonsteroidal anti-inflammatory drugs (NSAIDs) was synthesized. Structural confirmation was achieved using attenuated total reflectance Fourier transform infrared (ATR–FTIR) spectroscopy, proton and phosphorus nuclear magnetic resonance (¹H and ³¹P NMR), and elemental analysis. Morphological analysis was achieved using scanning electron microscopy (SEM), which revealed distinct surface morphologies, including crystalline, rod-, sheet-, needle-, and sponge-like structures, highlighting the diversity arising from drug conjugation. Thermogravimetric analysis (TGA) showed that drug-conjugated dendrimers have greater thermal stability than unfunctionalized dendrimers, suggesting that attaching drugs to the dendritic structure enhances their thermal stability. The cytotoxicity of the dendrimers was evaluated in RAW-264.7 macrophages using the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2 H-tetrazolium (MTS) assay. Their anti-inflammatory activity was assessed by quantifying tumor necrosis factor-alpha (TNF-α) secretion levels in cell culture supernatant using enzyme-linked immunosorbent assay (ELISA). All drug-conjugated dendrimers-maintained cell viability above 80% at 50 µM. Under non-stimulated conditions, i.e., in the absence of lipopolysaccharide (LPS, a proinflammatory stimulus), <b>Indo-D7</b> (dendrimer-conjugated indomethacin) and <b>Sul-D8</b> (dendrimer-conjugated sulindac) showed TNF-α levels of 26.4 ± 5.52 pg/mL and 31.3 ± 5.12 pg/mL, respectively, compared with untreated cells (172.3 ± 4.52 pg/mL). These values represent TNF-α reductions of 47.9% and 47.6% relative to the free drugs indomethacin and sulindac (50.75 ± 4.80 pg/mL and 59.78 ± 5.37 pg/mL, respectively). RAW 264.7 macrophages were polarized from a non-inflammatory to a pro-inflammatory state by LPS stimulation (1 µg/mL), and the dendrimer–drug conjugates exhibited significant anti-inflammatory efficacy. For example, <b>Ibu-D4</b> (dendrimer-conjugated ibuprofen) reduced TNF-α levels to 19.76 ± 5.76 pg/mL compared with LPS-treated cells (382.1 ± 9.53 pg/mL), representing an 87.3% reduction relative to free ibuprofen (155.9 ± 11.05 pg/mL). Similarly, <b>Mef-D3</b> (dendrimer-conjugated mefenamic acid) reduced TNF-α levels to 42.46 ± 3.04 pg/mL, corresponding to a 76.2% reduction relative to free mefenamic acid (178.12 ± 7.02 pg/mL). These results demonstrate that Schiff base cyclotriphosphazene-based dendrimers modulate macrophage inflammatory responses in both naïve (non-inflammatory) and LPS stimulated (pro-inflammatory) macrophages in vitro, highlighting their potential to enhance the NSAIDs’ anti-inflammatory efficacy.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"33 11","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface-driven degradation of magnetic elastomer under natural weathering exposure","authors":"Rehnupreya Hentry Viension,&nbsp;Nur Azmah Nordin,&nbsp;Saiful Amri Mazlan,&nbsp;Mohd Aidy Faizal Johari,&nbsp;Eleen Dayana Mohamed Isa,&nbsp;Norhiwani Hapipi,&nbsp;Nur Adilah Adanan","doi":"10.1007/s10965-026-05150-8","DOIUrl":"10.1007/s10965-026-05150-8","url":null,"abstract":"<div><p>Magnetic elastomer incorporating electrolytic iron particles (ME-EIP) are promising smart materials for adaptive engineering applications due to their tunable mechanical and rheological properties under an applied magnetic field. However, prolonged environmental exposure can induce progressive surface degradation, subsequently affecting the material properties and magneto-responsive (MR) performance. This study investigates the surface-driven degradation of ME-EIP subjected to 12 months of natural weathering, with 3 months intervals through morphological, chemical, mechanical and rheological analyses. Wrinkle-like surface defects appeared after three months of exposure (M3), followed by progressive silicone rubber (SR) flaking after 6 months exposure (M6) and micro-voids development after prolonged ageing effect (M9 and M12), indicating continuous deterioration of the polymer matrix. Surface roughness increased by 111% from M0 to M12, while hardness increased by 25%, confirming progressive surface stiffening and hardened during ageing. FTIR analysis reveals emergence of hydroxyl (-OH) bands, suggesting moisture penetration and subtle structural changes in the sample. Rheological analysis then showed increased in the initial storage modulus (<i>G</i>_<i>o</i><i>′</i>), accompanied by a reduction in the linear viscoelastic (LVE) regions, indicating stiffer behaviour of ME-EIP samples due to the ageing effect. Nevertheless, the storage modulus (<i>G′</i>) further increased under magnetic fields, showing the magnetic force interactions between the EIPs remained significant. The loss factor (tan δ) also decreased due to deterioration in the internal friction between polymer chains and particle-matrix interfaces. Although the absolute MR effect showed minimal changes from M0 (0.23 MPa) to M12 (0.24 MPa), prolonged exposure reduced the relative MR effect from 114% to 29% because of the matrix flaking and disrupted particle’s interactions continuity. Overall, this study provides a comprehensive understanding of surface-driven degradation mechanisms in ME-EIP under long-term natural weathering and offers valuable insights for designing more durable smart materials intended for outdoor applications.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"33 11","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New Pd(II) complexes based on first-, second-, and third-generation dendritic oligoaminoethylene carbonates: synthesis, structure, morphology, and catalytic properties","authors":"Aleksei Maksimov,&nbsp;Bulat Yarullin,&nbsp;Anna Ivanova,&nbsp;Timur Sultanov,&nbsp;Maxim Bochkov,&nbsp;Kharlampii Kharlampidi,&nbsp;Gennadii Kutyrev","doi":"10.1007/s10965-026-05153-5","DOIUrl":"10.1007/s10965-026-05153-5","url":null,"abstract":"<div><p>This paper presents the results of the synthesis and characterization of new polynuclear Pd(II) complexes <b>4–6</b> based on first-, second-, and third-generation dendritic oligoaminoethylene carbonates. IR and UV–Vis spectroscopy confirmed the square-planar coordination of Pd(II) ions involving the oxygen atoms of the hydroxyl and carbonate groups. Using the isomolar series method, the stoichiometry was determined to be Pd:L = 1:10, 1:4, and 1:2 for Pd(II) complexes <b>4–6</b>, respectively. Their conditional stability constants (<i>lgβ</i>) were shown to decrease consistently from 20.76 <b>4</b> to 3.75 <b>6</b> due to increased steric hindrance. According to dynamic light scattering (DLS) data, the agglomerate size in a DMF solution increases from 1.13 μm <b>4</b> to 1.47 μm <b>6</b>, while in the solid state (SEM and optical microscopy) the opposite trend is observed (0.20–0.66 μm → 0.08–0.26 μm). Catalytic tests in the hydrogenation of benzaldehyde to benzyl alcohol showed 100% selectivity for all Pd(II) complexes. Moreover, the conversion increases from 26% <b>4</b> to 42% <b>6</b>, which correlates with a decrease in the stability of the complexes and the formation of smaller agglomerates with a high specific surface area of active Pd(0). The obtained results demonstrate that control over the generation of dendritic ligand allows for targeted regulation of catalytic activity, opening the way to the creation of highly selective heterogeneous catalysts.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"33 11","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toughening performance of ASA core-shell graft copolymers constructed with various crosslinking agents on SAN resins","authors":"Wenyu Xu,&nbsp;Yan Li,&nbsp;Zhixiang Yan,&nbsp;Jiaheng Huang,&nbsp;Zhiyong Tan","doi":"10.1007/s10965-026-05151-7","DOIUrl":"10.1007/s10965-026-05151-7","url":null,"abstract":"<div><p>In this study, poly(butyl acrylate) (PBA) seed latex was prepared through seed emulsion polymerization using five crosslinking agents: dicyclopentenyl acrylate (DCPA), N, N’-methylenebisacrylamide (MBA), ethylene glycol dimethacrylate (EGDMA), 2-(Dimethylamino)ethyl methacrylate (DMAEMA, abbreviated as DMA), and pentaerythritol tetraacrylate (PETA). After grafting, a series of acrylate-styrene-acrylonitrile (ASA) graft polymers were synthesized for toughening SAN Poly(styrene-co-acrylonitrile) resin. The results show that among the various types of crosslinking agents, DMA gives ASA grafted powders the most uniform particle size distribution and the highest grafting rate (34.6%), which is attributed to the electron-donating effect of its tertiary amine group. In the SAN/ASA (35/25) blend system, ASA particles crosslinked with DMA increased the impact strength to 21.7 kJ/m², more than six times higher than that of pure SAN, with an elongation at break of 28.44%, while the Young’s modulus remained at 2481.6 MPa. The impact fracture surface was rough with evenly distributed pores, demonstrating excellent toughness. These findings reveal that the chemical structure of crosslinking agents not only governs the morphology and crosslinking density of the PBA core but also profoundly influences the energy dissipation mechanisms of the ASA/SAN blend system. This study provides a theoretical foundation and experimental evidence for the rational design of high-performance ASA toughening systems.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"33 11","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable CNT-reinforced triple hybrid nanocoatings derived from epoxidized tung oil and recycled PET for enhanced corrosion protection","authors":"Fatih Eyduran,&nbsp;Mihrican Muti,&nbsp;Samer Obaid Hasan Hasan,&nbsp;İlke Demirkaya,&nbsp;İlknur Babahan-Bircan","doi":"10.1007/s10965-026-05142-8","DOIUrl":"10.1007/s10965-026-05142-8","url":null,"abstract":"<div><p>The development of sustainable high-performance coatings has become increasingly important because of environmental concerns associated with conventional petroleum-based polymers. In this study, a sustainable triple-hybrid nanocoating system was developed by integrating epoxidized tung oil, glycolyzed recycled polyethylene terephthalate (PET), and carbon nanotube (CNT) nanofillers. Recycled PET was glycolyzed using triethanolamine and incorporated into the epoxy network, while CNTs were added at a low loading level of 0.1 wt% to improve the barrier performance of the coatings. The synthesized bio-based epoxide resin and hybrid coating systems were characterized using spectroscopic, thermal, and electrochemical techniques. FTIR and NMR analyses confirmed the formation of a crosslinked epoxy network containing PET-derived aromatic segments. The DSC results showed that the cured epoxide systems exhibited glass transition temperatures (Tg) in the range of 109–196 °C, indicating the formation of a thermally stable and structurally constrained polymer network. Electrochemical impedance spectroscopy (EIS) measurements performed in 3.0 wt% NaCl solution demonstrated a distinct electrochemical differentiation among the formulations. Before NaCl exposure, the charge-transfer resistance (R_ct) increased from 76 Ω for ED-600 to 252 Ω for CNT-modified ED-600, and reached a peak value of 5.794 kΩ for PET-CNT-ED-600, demonstrating an exceptional early-stage barrier mechanism. After 7 days of NaCl exposure, the PET-CNT-modified coating maintained a stable and genuine polymer barrier resistance of approximately 2.0 kΩ. In contrast, the reference ED-600 exhibited an artificial rise in Rct to 2.021 kΩ driven by under-film corrosion product accumulation (sealing effect), while the standalone CNT-ED-600 dropped to 975 Ω due to the activation of conductive pathways surpassing the percolation threshold. Equivalent circuit fitting further revealed that the initial PET-CNT-ED-600 coating exhibited the highest coating-film resistance (R_f) of 13368.8 Ω.cm², compared with 1370 Ω.cm² for ED-600 and 233.6 Ω.cm² for CNT-ED-600. The PET-CNT- modified coating also showed the lowest coating capacitance (CPE_f) of 8.5 × 10^− 5 F.cm², mathematically validating reduced water uptake and a denser structure. These results demonstrate that while CNT networks introduce electrical pathways, their synergistic stabilization with recycled PET segments offers a viable approach for tailoring sustainable multifunctional coatings with balanced mechanical and electrochemical characteristics.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"33 11","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and characterization of high-toughness biodegradable PLA/PBSA blends","authors":"Arif Enes Karaca,&nbsp;Massimiliano Barletta","doi":"10.1007/s10965-026-05146-4","DOIUrl":"10.1007/s10965-026-05146-4","url":null,"abstract":"<div><p>The inherent brittleness of poly(lactic acid) (PLA) limits its use. This study demonstrates that blending with poly(butylene succinate-co-adipate) (PBSA) in combination with a chain extender (J-4468) overcomes this limitation. A transition in mechanical behavior is observed, with optimal toughness achieved in PBSA-rich blends. A full series of compatibilized PLA/PBSA blends was prepared and characterized. The results show a substantial improvement in toughness. The PLA50 blend exhibits a fundamental transition to a ductile state, with a notable increase in notched impact strength. The PLA20 blend achieves an optimal balance of properties, combining improved notched impact strength with elongation at break of 225.7%. Both blends show a several-fold increase in tear strength. Although tensile strength and modulus decrease, the heat deflection temperature remains stable near 53 °C. Rheological analysis confirms tunable processability, and morphological analysis confirms the transition from brittle to ductile fracture behavior. The integrated dataset provides a clear structure-property relationship, establishing a formulation strategy for high-toughness, biodegradable PLA-based materials. The observed property combinations suggest potential for flexible packaging applications, pending further validation of barriers and end-use performance.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"33 10","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10965-026-05146-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}