ACS Applied Polymer Materials最新文献

{"title":"Thermally Resilient Polymeric Antioxidants that Improve PET Stabilization with Reduced Additive Leaching","authors":"Yuyao Wang,&nbsp;Michael P. Shaver,&nbsp;Guilhem X. De Hoe","doi":"10.1021/acsapm.6c02846","DOIUrl":"https://doi.org/10.1021/acsapm.6c02846","url":null,"abstract":"<p>Antioxidantsare incorporated into plastics to enhance their resistanceto oxidative degradation. With rising concerns of leaching of additivesand/or their degradation products into packaged goods and the environment,the development of antioxidants that maintain function while mitigatingleaching is an important step for a sustainable plastics industry.In this work, we developed a suite of phenol-containing polymericantioxidants and incorporated them into PET via twin-screw extrusionto investigate their performance against a commercial small-moleculephenolic antioxidant, Irganox 1010. The antioxidants were generatedvia uncontrolled free-radical copolymerization of styrene (<strong>S</strong>) with 3-(3,5-di-<em>tert</em>-butyl-4-hydroxyphenyl)propylmethacrylate (<strong>BHPM</strong>). <strong>PS/BHPM</strong> copolymer sizeand composition were systematically varied, targeting 10 or 30 mol% <strong>BHPM</strong> and <em>M</em>_n values between7–20 kg/mol. Thermogravimetric analyses revealed size- andcomposition-dependent <em>T</em>_d,5% values inthe range of 340–359 °C, significantly higher than thatof Irganox 1010. PET extrudates with <strong>PS/BHPM</strong> demonstratedbetter antioxidant performance (i.e., higher oxidative induction times,OITs) and drastically less leaching than PET extrudates with Irganox1010. Size and composition trends emphasized a trade-off between OITenhancement and mitigation of leaching (e.g., higher additive <em>M</em>_n resulted in less leaching but lower OITs).Extrudate discoloration was quantified via yellowness index (YI),revealing a minor composition trend and overall comparable or lowerdiscoloration than Irganox 1010. These <strong>PS/BHPM</strong> copolymersoutperform our first-generation additives, demonstrating that chemicalstructure is key to optimizing performance (OIT, YI, and leachingpotential) and showing the importance of careful additive design forfuture plastic formulations.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"8 20","pages":"18369–18382"},"PeriodicalIF":5.2,"publicationDate":"2026-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149282136","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":"Cross-Linked Polyphosphazene Solid Polymer Electrolytes with Partially Immobilized Anions for Stable Lithium Metal Batteries","authors":"Ye-eun Han,&nbsp;Seung Yoon Lee,&nbsp;Jae Jun Kim,&nbsp;Daun Jeong,&nbsp;Hee Joong Kim,&nbsp;Jong-Chan Lee","doi":"10.1021/acsapm.6c03205","DOIUrl":"https://doi.org/10.1021/acsapm.6c03205","url":null,"abstract":"<p>Polyphosphazenespair an inorganic, flame-retardant −P═N–backbone with unusually high chain mobility, yet their softness haslimited their use as solid polymer electrolytes. Here, we convertthat flexibility into a free-standing solid polymer electrolyte by <em>in situ</em> radical cross-linking between polyphosphazenes bearingoligo(ethylene glycol) (EG repeating unit, <em>n</em> = 1–4)and allyloxy side chains (PEGnAP) and a polymerizable single-ion conductinglithium salt (LiMTFSI), thereby simultaneously introducing network-anchoredanionic moieties and building a free-standing network. Varying theoligo(ethylene glycol) side-chain length modulated both the ionicconductivity and lithium-ion transference number (<em>t</em>_Li⁺), with an intermediate side-chain length(<em>n</em> = 2, P2SPE0.05) providing the best overall balance,reaching a <em>t</em>_Li⁺ of 0.62 andan ionic conductivity of 1.90 × 10^–4 S cm^–1 at 60 °C. Partial anion immobilization may contributesto more regulated Li⁺ flux and promote stable solid electrolyteinterphase (SEI) formation, yielding stable lithium stripping/platingover 1000 h with low polarization. Post-mortem XPS and SEM analysesrevealed the formation of an inorganic-dominant interphase accompaniedby a uniform lithium surface morphology. Furthermore, LFP/P2SPE0.05/Licells exhibited improved cycling stability compared to cells employingthe P2DEG0.05 mobile-anion control electrolyte. These findings demonstratethat cross-linked polyphosphazenes incorporating single-ion conductingmoieties provide an effective platform for regulating interfaciallithium-ion transport and enhancing the stability of lithium metalbatteries.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"8 20","pages":"18585–18595"},"PeriodicalIF":5.2,"publicationDate":"2026-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149282167","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":"Bio-Based UV-Curable Resins Derived from Waste PET Glycolysis Products for LCD 3D Printing","authors":"Cheng Zhang,&nbsp;Hui He,&nbsp;Fan Kang,&nbsp;Siyang Liu","doi":"10.1021/acsapm.6c03079","DOIUrl":"https://doi.org/10.1021/acsapm.6c03079","url":null,"abstract":"<p>Tofacilitate the high-value upcycling of waste polyethylene terephthalate(PET) and the advancement of sustainable materials, a comprehensivestrategy encompassing chemical recycling, functionalization, and upcyclingwas proposed. Initially, bis(2-hydroxyethyl) terephthalate (BHET)was derived via the glycolysis of waste PET with ethylene glycol,which subsequently served as a precursor for the synthesis of a seriesof bio-based polyester polyols (BPOs). These polyols, characterizedby controllable branched structures, were synthesized through meltpolycondensation of BHET and the bio-based platform molecule, citricacid (CA). Bio-based UV-curable resins (BUVRs) were fabricated byincorporating the BPOs into a polyurethane acrylate matrix, and theintroduction of BPO significantly improved both the photocuring behaviorand mechanical properties of the resulting materials. Specifically,the double-bond conversion of the resin containing 5 wt % BPO1 increasedto 91.3%, representing a substantial improvement over the BPO-freecontrol. Mechanical characterization further revealed that the tensilestrength of the BUVR was nearly doubled, rising from 19.7 to 37.9MPa with increasing BPO1 content. Furthermore, owing to their exceptionalresistance to nonpolar solvents, the BUVRs were successfully utilizedin LCD 3D printing to yield components characterized by high dimensionalstability and precision. Consequently, this study establishes a low-carbonand efficient paradigm for the upcycling of waste PET and the fabricationof high-performance bio-based UV-curable resins.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"8 20","pages":"18684–18695"},"PeriodicalIF":5.2,"publicationDate":"2026-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149282173","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":"Fe-Coordinated Dopamine Derivative-Based Flame Retardant Epoxy Resin: Thermal Stability, Flame Retardancy, and Mechanism","authors":"Ming Gao,&nbsp;Huiting He,&nbsp;Zhengwu Zhang,&nbsp;Lina Yue,&nbsp;Junfei Li,&nbsp;Xuexi Chen","doi":"10.1021/acsapm.6c03128","DOIUrl":"https://doi.org/10.1021/acsapm.6c03128","url":null,"abstract":"<p>Withthe increasing fire safety requirements of epoxy resin (EP),developing sustainable and efficient flame retardants has become highlydesirable. In this work, a bio-based phosphorus–nitrogen flameretardant (DA-HCCP) was synthesized using dopamine (DA) and hexachlorocyclotriphosphazene(HCCP), followed by Fe³⁺ coordination to construct a metal-containingflame-retardant architecture (Fe@DA-HCCP). Subsequently, the as-preparedFe@DA-HCCP was incorporated into EP to investigate its effects onthermal stability, combustion behavior, and flame-retardant mechanisms.With a loading of only 5 wt %, the EP/Fe@DA-HCCP composites achieveda UL-94 V-0 rating and a limiting oxygen index (LOI) of 33.5%, togetherwith significantly enhanced char formation and thermal stability.Cone calorimetry results revealed that the peak heat release rate(pHRR) and total smoke production (TSP) decreased by 51.7% and 37.2%,respectively, while the time to ignition (TTI) was markedly prolonged,indicating substantially suppressed fire hazard. Mechanistic investigationsdemonstrated that DA-HCCP primarily exerted flame retardancy throughphosphorus–nitrogen synergism by promoting char formation inthe condensed phase, while phosphorus-containing active species, includingPO^• radicals, may provide an auxiliary contributionthrough gas-phase radical quenching. More importantly, the incorporationof Fe³⁺ facilitated catalytic dehydration, aromatization,and graphitization during thermal degradation, leading to the evolutionof a compact and thermally stable carbonaceous protective layer. Simultaneously,the generation of combustible volatiles and smoke precursors was effectivelysuppressed. In addition, Fe³⁺ coordination improved theglass transition behavior and stiffness of the epoxy composite, whilemaintaining favorable dispersion within the EP matrix. This work providesan effective strategy for constructing bio-based multifunctional flame-retardantsystems by integrating phosphazene chemistry with transition-metalcatalysis.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"8 20","pages":"18533–18549"},"PeriodicalIF":5.2,"publicationDate":"2026-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149282178","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":"Salting-Out-Induced Fiber Reinforcement and Multiple Hydrogen Bonding Enable Robust, Freezing-Tolerant, and Dehydration-Resistant Hydrogel Strain Sensors","authors":"Xincheng Tang,&nbsp;Shu Wu,&nbsp;Huiqian Wan,&nbsp;Jiawang Duan,&nbsp;Yu Chen,&nbsp;Jiabao Zheng,&nbsp;Jiayi Zhang,&nbsp;Hongzhi Pan,&nbsp;Dongdong Zeng","doi":"10.1021/acsapm.6c03453","DOIUrl":"https://doi.org/10.1021/acsapm.6c03453","url":null,"abstract":"<p>Developing hydrogel strain sensors that simultaneouslypossessmechanical robustness, stretchability, environmental stability, andreliable ionic signal transmission remains a major challenge for wearableelectronics. Many existing reinforcement strategies often improvestrength at the expense of deformability or rely on externally introducedfillers that may compromise network uniformity and ion transport.Herein, we report a salting-out-induced rigid–soft synergisticreinforcement strategy to construct an ionically conductive sodiumalginate (SA)/NaCl/poly(vinyl alcohol) (PVA)/tannic acid (TA) hydrogel(SNPT hydrogel) containing dispersed SA-derived reinforcing domainsthrough a simple solution-mixing and freeze–thaw process. Inthis system, NaCl plays a dual role: it promotes the pregelation associationof sodium alginate (SA) chains in the precursor solution, leadingto the formation of dispersed SA-derived reinforcing domains, whileproviding mobile ions for electrical conduction. Meanwhile, tannicacid (TA) establishes multiple dynamic hydrogen-bonding interactionswith SA and poly(vinyl alcohol) (PVA), forming reversible physicalcross-linking sites that stabilize the network and dissipate deformationenergy. Benefiting from this hierarchical structure, the optimizedSN₂PT_1.2% hydrogel exhibits a balanced combinationof tensile strength (0.40 MPa), elongation at break (344%), and ionicconductivity (0.029 S/m). The incorporation of glycerol and NaCl furtherenables the hydrogel to retain flexibility and conductivity afterexposure to −20 °C and to resist dehydration under acceleratedheating conditions. When assembled into a flexible strain sensor,the SNPT hydrogel exhibited stable stepwise resistance responses understrains up to 90% and maintained a highly linear Δ<em>R</em>/<em>R</em>₀–strain relationship over thetested strain range, with a moderate gauge factor of 0.29. These featuresenable reliable monitoring of finger, knee, elbow, and wrist motions.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"8 20","pages":"18750–18763"},"PeriodicalIF":5.2,"publicationDate":"2026-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149251315","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":"Aminated Carbon Black for Epoxy/Paraffin PTC Ink: Achieving the Elimination of NTC and Cycle Stability","authors":"Zhongquan Zhu,&nbsp;Hanshuo Niu,&nbsp;Jing Zuo,&nbsp;Qingting Liu,&nbsp;Shengfei Hu","doi":"10.1021/acsapm.6c02563","DOIUrl":"https://doi.org/10.1021/acsapm.6c02563","url":null,"abstract":"<p>The rapid development of modern precisionelectronic componentsplaced stringent demands on highly sensitive voltage overload protectionand thermal management, and the positive temperature coefficient (PTC)effect observed in conductive polymer composites (CPCs) played a crucialrole in this regard. However, once the polymer matrix had melted,most PTC composites exhibited a negative temperature coefficient (NTC)effect, while the excessive rigidity and brittleness of traditionalceramics limited their practical applications. This study presenteda PTC ink composite material. The method involved the synergisticuse of a thermosetting epoxy resin (EP) matrix and paraffin wax (PW),a material with a high expansion ratio, with γ-aminopropyltriethoxysilane(KH550)-grafted carbon black (KCB) serving as the conductive filler,printed on the film using screen printing. The results indicate thatthe formation of static covalent bonds and hydrogen bonds at the interfacebetween KCB and the epoxy resin effectively eliminates the influenceof NTC. This ink exhibits sensitive temperature responsiveness at30–50 °C, extends the PTC plateau, and achieves a PTCintensity of 3. Compared with traditional heating elements, this PTCink composite offers advantages such as rapid response, sensitivity,and the ability to meet the start-up temperature requirements of electronicdevices in cold conditions, as well as temperature self-limiting properties,safety, and convenience. These epoxy-based PTC composite materialsshow great promise in applications such as thermal protection forelectronic components and battery circuit protection.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"8 19","pages":"17261–17272"},"PeriodicalIF":5.2,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152841","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":"Polymer-Ionic Liquid-TiO2 Composite Electrolyte for Safe and High-Voltage Lithium Metal Batteries","authors":"Yixin Wei,&nbsp;Jiaying Chen,&nbsp;Yaowu Cai,&nbsp;Qiankun Shi,&nbsp;Guosheng Shao,&nbsp;Ruohan Hou,&nbsp;Peng Zhang","doi":"10.1021/acsapm.6c03425","DOIUrl":"https://doi.org/10.1021/acsapm.6c03425","url":null,"abstract":"<p>Lithium metal batteries (LMBs) are promising next-generationenergystorage systems. However, their practical application remains limitedby safety concerns and poor compatibility with high-voltage cathodes,arising from interfacial instability, dendrite growth, and unevenion transport at the electrode–electrolyte interface. Solidpolymer electrolytes (SPEs) improve safety but still suffer from lowLi⁺ transference numbers and insufficient interfacial stability.Herein, a synergistic polymer, ionic liquid, and inorganic compositeelectrolyte (FALET) is developed to regulate ion transport and interfacialchemistry. The polymer/ionic liquid matrix facilitates Li⁺ transport, while EMIMTFSI also participates in interfacial electrochemicalprocesses during Li plating/stripping. TiO₂ nanofibersfurther regulate TFSI^– anions and promote lithiumsalt dissociation through Lewis acid interactions. The resulting cooperativeregulation of ion transport and interfacial chemistry homogenizesLi⁺ flux, promotes the formation of a dense inorganic richSEI, and suppresses dendrite growth. The FALET electrolyte exhibitsan ionic conductivity of 6.52 × 10^–4 S cm^–1, a Li⁺ transference number of 0.31, anda stability window of 5.01 V. It enables stable Li||Li cycling over2700 h and a Coulombic efficiency of 96% in Li||Cu cells. Full cellsfurther demonstrate stable cycling, high-voltage compatibility, andenhanced safety with improved flame retardancy and thermal stability.This work provides an effective strategy for developing safe and high-voltage-compatiblesolid polymer electrolytes.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"8 19","pages":"17903–17915"},"PeriodicalIF":5.2,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152997","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":"Designing Macrovoid-Free Polysulfone (PSf) Ultrafiltration (UF) Membranes with Tetraoxaundecane (TOU) Solvent","authors":"Jadwiga Poniatowska,&nbsp;Kitty Nijmeijer,&nbsp;Zandrie Borneman","doi":"10.1021/acsapm.6c02976","DOIUrl":"https://doi.org/10.1021/acsapm.6c02976","url":null,"abstract":"<p>Formation of macrovoidsin the membrane structure is a common occurrencein the process of nonsolvent-induced phase separation (NIPS), yetit is often undesired due to low structural homogeneity, poor performance,and introduction of weak mechanical points. Here, we introduce anether-based solvent, 2,5,7,10-tetraoxaundecane (TOU), for fabricationof macrovoid-free polysulfone (PSf) ultrafiltration (UF) membranes.We investigate how strong polymer–solvent affinity, high chainentanglement, and high viscosity influence the phase-inversion processand promote the formation of homogeneous membrane structures duringNIPS. Membranes prepared from PSf/TOU dope solutions exhibited stablesponge-like morphology, without macrovoids, in contrast to PSf membranesprepared from the more common solvent <em>N</em>-methyl-2-pyrrolidone(NMP), which typically display large fingerlike macrovoids. For PSf/TOUsystems, mixing ethanol and water in the coagulation bath led to fabricationof porous, permeable membranes while maintaining the macrovoid-freemorphology. Membrane performance was further optimized by changingthe polymer concentration and the addition of a pore-forming agentin the dope solution. The best-performing membranes showed pure waterpermeance between 149 and 204 L·m^–2·h^–1·bar^–1 and a bovine serum albuminrejection around 90%. This work establishes TOU as a previously unexploredyet effective solvent for NIPS fabrication of PSf UF membranes, enablingprecise control over membrane structure and effective suppressionof macrovoid formation and ultimately broadening the design spacefor PSf membranes.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"8 19","pages":"17530–17544"},"PeriodicalIF":5.2,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149153102","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":"Spirocyclic Bio-Based Epoxy Resins from Lignin-Derived Guaiacol: Molecular Design for Enhanced Thermal, Mechanical, and Hygrothermal Stability","authors":"Haoyang Jin,&nbsp;Fengyuan Zhang,&nbsp;Longtao Wang,&nbsp;Tianyun Zhang,&nbsp;Shanshan Dai,&nbsp;Songqi Ma","doi":"10.1021/acsapm.6c02718","DOIUrl":"https://doi.org/10.1021/acsapm.6c02718","url":null,"abstract":"<p>Growing global demand for sustainable materials has driventhedevelopment of high-performance biobased epoxy resins. However, conventionalstrategies are plagued by reliance on fossil resources and subparperformance across key metrics (e.g., glass transition temperature,tensile modulus, and hygrothermal stability), making it difficultto simultaneously balance sustainability and high performance. Herein,an innovative biobased epoxy resin featuring a spirocyclic moleculararchitecture was synthesized from guaiacol (2-methoxyphenol), a lignin-derivedplatform monomer. Compared with diglycidyl ether of bisphenol A (DGEBA)thermosets, the cured networks exhibited a significantly higher glasstransition temperature (<em>T</em>_g) and enhancedtensile modulus. Furthermore, the networks exhibited exceptional hygrothermalstability, retaining 94.2% of their initial tensile strength and 93.7%of their initial tensile modulus after aging for 15 days under 60°C and 90% relative humidity. This paper introduces a macromoleculararchitecture design strategy centered on spirocyclic topology andestablishes a deoxygenation-free route to transform lignin-derivedmonomers into high-performance epoxy thermosets.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"8 19","pages":"17297–17305"},"PeriodicalIF":5.2,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149153080","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":"Strong-Interaction-Assisted Surface Fluorine Enrichment in Fluorinated AB-type Polyurethane Coatings","authors":"Yunling Li,&nbsp;Pengxiang Liu,&nbsp;Xinzhe Fu,&nbsp;Baolong Wang,&nbsp;Yafei Wang,&nbsp;Jun Li,&nbsp;Yudong Huang,&nbsp;Zhen Hu","doi":"10.1021/acsapm.6c02519","DOIUrl":"https://doi.org/10.1021/acsapm.6c02519","url":null,"abstract":"<p>Achieving efficient hydrophobizationin polyurethanecoatings underlow-fluorine modification remains challenging because surface functionalitymust be introduced without compromising bulk cohesion and mechanicalintegrity. Here, a fluorinated AB-type polyurethane (PUAB) was designedby combining thermally triggered self-polymerization with postpolymerizationthiol–ene fluorination. The resulting PUAB matrix is stabilizedby hierarchical hydrogen bonding and π-related interactions,while the limited compatibility and low surface energy of the fluorinatedside chains promote their segregation toward the air-exposed surfaceduring film formation. This bulk-interaction-assisted fluorine enrichmentgenerated a fluorine-rich outer layer with submicron protrusions,enabling efficient surface hydrophobization at low fluorine content.Spectroscopic, thermal, microscopic, and computational analyses revealedthe relationship between polymer backbone interactions and surfaceorganization. The fluorinated PUAB coatings exhibited enhanced hydrophobicity,robust mechanical properties, good adhesion, and improved electrochemicalbarrier performance. This work provides a material design strategyfor constructing low-fluorine polyurethane coatings through the couplingof strong bulk interactions and surface fluorine enrichment.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":"8 19","pages":"17210–17220"},"PeriodicalIF":5.2,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149153212","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}