ACS Omega最新文献

{"title":"Metamaterial-Inspired Dual-Band Flexible Textile Antenna Using Wool-Felt Substrate for Body-Centric Wireless Electronics","authors":"Saïd Douhi,&nbsp;Mounir El Achaby,&nbsp;Zahriladha Zakaria,&nbsp;A. J. A. Al-Gburi,&nbsp;Adil Eddiai","doi":"10.1021/acsomega.6c06181","DOIUrl":"https://doi.org/10.1021/acsomega.6c06181","url":null,"abstract":"<p>Flexible textile-basedelectronic systems are emergingas promisingcandidates for next-generation wearable technologies due to theirmechanical compliance, lightweight nature, and seamless integrationinto garments. In this work, a metamaterial-inspired dual-band flexibletextile antenna based on a wool-felt substrate is presented for body-centricwireless applications. The proposed device is designed as a flexibleelectronic structure integrating coplanar waveguide (CPW) feedingwith symmetric square-ring resonators to enable compact size and dual-bandelectromagnetic functionality. The wool-felt substrate serves as afunctional textile material offering low density, high flexibility,and stable dielectric behavior under mechanical deformation. The fabricatedstructure exhibits an overall dimension of 40 × 52 mm², making it suitable for garment-integrated electronic systems. Experimentalresults demonstrate two impedance bandwidths of 3.11–3.70 GHzand 5.52–6.89 GHz (|<em>S</em>₁₁| &lt; −10dB), covering sub-6 GHz 5G and ISM wireless communication bands. Theproposed flexible electronic system achieves measured gains of 1.81dBi and 4.35 dBi at the lower and upper frequency bands, respectively,with good agreement between simulated and experimental results. Mechanicalbending analysis confirms stable electromagnetic performance, withresonance shifts below 1%, indicating robust mechanical–electromagneticcoupling under deformation. Furthermore, specific absorption rate(SAR) analysis verifies compliance with international safety standardsfor on-body wireless operation. Owing to its combination of a functionaltextile substrate, compact architecture, and stable dual-band performance,the proposed wool-felt-based flexible antenna represents a promisingcandidate for wearable and body-centric electronic systems.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"63151–63169"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221987","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":"Hydrogen Blending in Natural Gas: Technologies and Challenges","authors":"Dan Guo,&nbsp;Yuxin Cui,&nbsp;Pan Zhang,&nbsp;Xiao Wu,&nbsp;Zhao Yang,&nbsp;Jiang Bian","doi":"10.1021/acsomega.6c07107","DOIUrl":"https://doi.org/10.1021/acsomega.6c07107","url":null,"abstract":"<p>In this paper, acomprehensive review of the technologies and challengesassociated with hydrogen-blended natural gas (HBNG) systems is provided.The background, hydrogen production pathways, blending technologies,and implementation strategies of HBNG were systematically reviewed,while the effects of hydrogen addition on gas properties, pipelinetransportation systems, and end-use applications were critically examined.The results indicate that HBNG technologies are gradually evolvingfrom low-concentration feasibility studies toward high-hydrogen-ratioapplications. At elevated hydrogen blending levels, major technicalchallenges include hydrogen embrittlement of pipeline materials, leakageand explosion risks, combustion stability control, and determinationof hydrogen blending ratios. Besides, high hydrogen production costs,infrastructure retrofitting requirements, and the lack of harmonizedinternational standards continue to hinder large-scale deployment.Therefore, future implementation of HBNG technologies will requirebreakthroughs in material durability, technical standardization, accuratehydrogen concentration control, and end-use system adaptability, therebyproviding important support for the transition toward low-carbon andsustainable energy systems.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"62310–62339"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221960","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":"Ultrarobust, Rapidly Recoverable Superhydrophobic Coatings with Self-Similar Micro/Nanostructures and Reinforced Interface for Aluminum Alloy Protection","authors":"Jing Chen,&nbsp;Fujia Wang,&nbsp;Xinxin Xiao,&nbsp;Xiaohan Jia,&nbsp;Xiaowei Wang,&nbsp;Sha Chen","doi":"10.1021/acsomega.6c07237","DOIUrl":"https://doi.org/10.1021/acsomega.6c07237","url":null,"abstract":"<p>In the field of aluminum alloy protection, constructingdurablesuperhydrophobic coatings through a simple strategy is always a greatchallenge. Here, we report a functional coating with high mechanicalrobustness and superhydrophobic recoverability, composed of 1H, 1H,2H, 2H-perfluorooctyltriethoxysilane (PTES) bonded octyltrimethoxysilane-functionalizedtitanium dioxide nanoparticles (OTMS-TiO₂ NPs) and high-viscosityepoxy resin (EP). The coating combines a hierarchical micro/nanostructure,an EP adhesive interface, and a surface enriched with fluorinatedand alkyl functionalities. The synergy between the hierarchical roughnessand the low-polarity surface chemistry enables excellent water repellency.After 100 cycles of sandpaper abrasion or tape peeling, the coatingretained its superhydrophobic water repellency, with WCA values remainingabove 160°. The newly exposed surfaces preserved sufficient hierarchicalroughness and low-surface-energy components to sustain superhydrophobic.Even after continuous water flow impact or stirred sand-slurry abrasionfor 48 h, the superhydrophobicity of the coating does not show significantdegradation (WCA &gt; 150°). In addition, the coating shows greatstability in strong acidic (pH = 2) or strong alkaline (pH = 12) environments.More importantly, when the coating encounters mechanical damage, corrosionby 36.5 wt % HCl, or complete contamination by industrial oil/paint,its superhydrophobic properties can be quickly restored through asimple sandpaper rubbing treatment. This easily prepared superhydrophobiccoating with both recoverability and excellent robustness providesnew technical support for protecting aluminum alloy.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"63441–63453"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221970","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":"The Influence of Rheological Properties on the Adhesiveness of Food Waste and Its Implications for Mechanical Separation","authors":"Panida Payomthip,&nbsp;Noppharit Sutthasil,&nbsp;Hiroyuki Ishimori,&nbsp;Tomonori Ishigaki,&nbsp;Masato Yamada","doi":"10.1021/acsomega.6c02843","DOIUrl":"https://doi.org/10.1021/acsomega.6c02843","url":null,"abstract":"<p>The viscoelastic and adhesive properties of food wastematerialsare critical factors influencing the efficiency of mechanical separationprocesses in waste management. This study investigated the moisture-dependentrheological behavior─specifically storage modulus in both shear(<em>G</em>′) and compression (<em>E</em>′)modes, alongside the loss factor (tan δ)─of various foodwaste types, categorized as solid-like (steamed rice, banana pulp,raw meat) and paste-like (mashed banana, ketchup, mashed steamed rice,yogurt). These properties were correlated with adhesion strength onaluminum and high-density polyethylene (HDPE) surfaces using 90°peel tests. Results identified specific moisture-induced viscoelastictransitions for different materials. Steamed rice demonstrated a sharpincrease in tan δ at a critical moisture range, indicative ofstarch gelatinization. Material-specific correlations revealed thathigher tan δ (more viscous behavior) closely corresponds tostructural softening and enhanced interfacial adhesion within individualpaste-like materials, with consistently stronger adhesion observedon aluminum foil compared to HDPE sheets. However, carbohydrate-richpastes showed increased adhesion at very low moisture levels. Thesefindings highlight the significant impact of moisture-dependent rheologicalproperties, where tan δ serves as a critical within-materialtransition indicator for identifying localized risk of clogging, screenblinding, and material agglomeration in processing equipment. Thestudy underscores the importance of considering material-specificviscoelastic behavior and surface interactions in optimizing wasteprocessing technologies and suggests potential benefits of moisturecontrol and material selection in equipment design, as well as thestrategic implementation of source separation for problematic wastefractions, particularly those exhibiting high tan δ and highviscoelasticity.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"62592–62605"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221971","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":"Engineering a Single-Plasmid Dual-Pigment Escherichia coli Biosensor for Simultaneous Colorimetric Detection of Pb(II) and Hg(II)","authors":"Zhaobo Hu,&nbsp;Yan Guo,&nbsp;Peishuo Cao,&nbsp;Keyan Wei,&nbsp;Zongjie Ma,&nbsp;Boxin Li,&nbsp;Dong Li,&nbsp;Liang Zhou,&nbsp;Chang-ye Hui","doi":"10.1021/acsomega.6c07888","DOIUrl":"https://doi.org/10.1021/acsomega.6c07888","url":null,"abstract":"<p>This work presents an engineered single-plasmid, dual-pigmentwhole-cellbiosensor for simultaneous colorimetric detection of Pb(II) and Hg(II).To address the challenge of signal interference in cocontaminatedenvironmental samples, a Pb(II)-responsive PbrR regulatory moduledriving indigo biosynthesis (blue, 620 nm) and an Hg(II)-responsiveMerR module driving deoxyviolacein biosynthesis (purple, 570 nm) wereintegrated into <em>Escherichia coli</em> TOP10.The orthogonal decoupling of the two pigment pathways, combined witha unified 10 h induction protocol, enables independent chromogenicreadout of both metals from a single cultivation. Dose-response assaysafforded a broad linear dynamic range for Pb(II) of 0.977–2000μM (R² = 0.9503) with a limit of detection (LOD)of 0.977 μM, alongside nanomolar sensitivity for Hg(II) witha linear range of 0.244–250 nM (R² = 0.9800) andan LOD of 0.244 nM. A two-dimensional cross-concentration matrix experimentfurther demonstrated that the two detection channels maintain distinguishabledose-dependent responses under coexposure conditions, with crosstalkremaining within an acceptable range. Robust performance was retainedin spiked surface water and seawater matrices, yielding Pb(II) LODsof 0.244 μM (surface water) and 0.488 μM (seawater), andHg(II) LODs of 0.488 nM (surface water) and 0.977 nM (seawater). Thesedetection limits approach or fall below relevant environmental regulatorythresholds, including the Class III surface-water standard for Hg(II).This self-contained, instrument-free pigment-based approach enablesnaked-eye discrimination of both metals in a standard microplate assay,offering a low-cost, high-throughput screening platform that complementsstandard instrumental methods for on-site environmental monitoringand emergency pollution response.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"63713–63723"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222030","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":"Study of the Graphene Oxide Reduction Reaction Kinetics: Modeling and Electrical Monitoring of the Process","authors":"Alessandra M. G. Barbosa,&nbsp;Andrés Vercik","doi":"10.1021/acsomega.6c06676","DOIUrl":"https://doi.org/10.1021/acsomega.6c06676","url":null,"abstract":"<p>Chemical reductionof graphene oxide is considered to be the mostpromising method for the large-scale, fast, and low-cost productionof graphene in solution. Despite its importance, there is a lack ofstudies regarding this process, the detailed description of whichwould allow for optimization in terms of both time and cost. Moreover,a rapid and real-time method for monitoring the reaction could furtheroptimize the procedure. The aim of this work is to study the kineticsof the chemical reduction of graphene oxide using ascorbic acid asa green reducing agent. For this purpose, the reduction reaction ismonitored by measuring both the UV–vis spectra and the electricalconductance of the reaction solution, which increases as the reductionof graphene oxide proceeds. An accurate mathematical model of thereaction kinetics is proposed. Excellent agreement between the experimentaland simulated curves was obtained using an uncoupled system of first-orderdifferential equations for each reactant. The electrical monitoringof the reaction progress is validated by comparing the reduced grapheneoxide concentrations obtained by the two methods, with no significantdifferences.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"63312–63321"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222058","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 Silica on Nitrate-Incorporated Vanadia Catalysts in Low-Temperature Selective Catalytic Reduction of Nitrogen Oxides","authors":"Gibum Kwon,&nbsp;Shin Ae Song,&nbsp;Duck Hyun Lee","doi":"10.1021/acsomega.6c06102","DOIUrl":"https://doi.org/10.1021/acsomega.6c06102","url":null,"abstract":"<p>Developing shapedcatalysts for the low-temperature selective catalyticreduction (SCR) of NO_<em>x</em> often results insevere physical detachment and efficiency loss. Building on our previousdevelopment of highly active nitrate-incorporated V₂O₅–WO₃/TiO₂ powder catalysts, weinvestigated the effect of SiO₂ as a structural binderfor coating these catalysts onto glass fiber sheets. Coatings with0–30 wt % SiO₂ were prepared and evaluated. Theaddition of 10 wt % SiO₂ significantly improved catalystdispersion, coating uniformity, and mechanical adhesion, successfullypreventing the structural degradation typically observed under highlyhumid operating conditions. Consequently, the SiO₂-containingcatalyst demonstrated enhanced physical stability, maintaining consistentNO_<em>x</em> removal efficiencies for at least80 h, whereas the SiO₂-free coating showed progressivedeactivation due to physical peeling. The optimized catalyst (10 wt% SiO₂, 4 wt % V₂O₅) achieved a 98.7%NO_<em>x</em> removal efficiency at 180 °Cunder dry conditions and 95.2% in the presence of 10 vol % H₂O. These findings clearly demonstrate that SiO₂ acts asan exceptionally robust structural binder, effectively bridging thegap between highly active fundamental powders and macroscopicallystable industrial applications.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"63101–63109"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149222079","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":"Chemical Looping Reforming of Methane Coupled with CO2 Splitting Using a Sol–Gel-Derived LaFe0.4Co0.6O3 Oxygen Carrier","authors":"Haiming Gu,&nbsp;Peng Xu,&nbsp;Shanhui Zhao,&nbsp;Siwen Zhang,&nbsp;Yadong Yu,&nbsp;Miaomiao Niu","doi":"10.1021/acsomega.6c08053","DOIUrl":"https://doi.org/10.1021/acsomega.6c08053","url":null,"abstract":"<p>Chemical loopingreforming of CH₄ coupled with CO₂ splitting(CLRCS) is an attractive technology that enablescovalorization of CO₂ and CH₄ to high- valuesyngas. In CLRCS, oxygen carriers shuttle oxygen from CO₂ to CH₄, enabling selective methane partial oxidationand CO₂ splitting. However, rational optimization of perovskiteoxygen carriers is pivotal to advancing this technology. Herein, aset of Co-doped LaFeO₃ perovskite oxygen carriers (LaFe_{1–<em>x</em>}Co_<em>x</em>O₃, <em>x</em> = 0–1) were synthesized via anoptimized sol–gel method. The catalytic performances of materialswere measured in a fixed-bed reactor at 750–950 °C, complementedby X-ray diffraction (XRD) and scanning electron microscopy (SEM)characterizations for structural analysis. Among all tested samples,LaFe_0.4Co_0.6O₃ achieves superiorperformance at 850 °C, with 92% CH₄ conversion and∼90% syngas selectivity (H₂/CO ≈ 2). ModerateCo incorporation remodels the Fe-centered perovskite lattice, whichappeared to tune the material redox properties. By contrast, excessiveCo doping (<em>x</em> &gt; 0.6) deteriorates regenerationcapacityand cyclic stability. Catalytic behavior is highly sensitive to theoxidant atmosphere: CO₂ and H₂O as mild oxidantsare hypothesized to preserve the oxygen carrier in a favorable incompletelyoxidized state for selective reforming, whereas O₂ causesoveroxidation, restricting CH₄ conversion to 60% and syngasselectivity to 10%. Moreover, optimizing the inlet CO₂ concentrationfurther modulates the redox state of LaFe_0.4Co_0.6O₃. Benefiting from optimized oxidation protocols, thematerial retained steady performance over 100 redox cycles, sustaining96–98% CH₄ conversion, 92.9–95.4% CO selectivity,93.9–96.8% H₂ selectivity, and 91–93% CO₂ utilization efficiency. This study proposes plausible designguidelines for perovskite oxygen carriers tailored to sustainablesyngas synthesis via CLRCS and provides fundamental structural andoperational references for future reactor scale-up and renewable-energymatching of this carbon capture process.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"64209–64220"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221827","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":"Hemp-Derived Cellulose/NiFe2O4 Biocomposite Hydrogels for Flexible Optoelectronics","authors":"Orhan Yalçın,&nbsp;Ahmed M.J. Al-dala Ali,&nbsp;Ramazan Coşkun,&nbsp;Hasan Uslu","doi":"10.1021/acsomega.6c04724","DOIUrl":"https://doi.org/10.1021/acsomega.6c04724","url":null,"abstract":"&lt;p&gt;This study presents a systematic investigation into theopticaland broadband dielectric behaviors of sustainable biocomposite hydrogels,synthesized from hemp biomass-derived cellulose and a poly(AMPS/IA)network reinforced with varying concentrations of NiFe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; nanoparticles, hereafter denoted as NiFe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; biocomposite hydrogels (NiFH). The primary objectivewas to determine the suitability of these eco-friendly materials forflexible optoelectronic applications by elucidating the influenceof filler loading on charge transport mechanisms. Structural and morphologicalcharacterizations via X-ray diffraction (XRD), scanning electron microscopy(SEM), and scanning transmission electron microscopy (STEM) confirmedthe successful formation of a densely cross-inked amorphous matrix.The dispersion of the inorganic phase, without severe microscale agglomeration,was evidenced by the electron-dense domains resolved in the STEM images,while the characteristic spinel-type metal–oxygen vibrationsidentified by FTIR were consistent with the retention of the NiFe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; ferrite phase. Optical characterization revealedthat the hydrogels exhibit tunable semiconductor properties, withdirect band gap energies (&lt;span&gt;&lt;em&gt;E&lt;/em&gt;&lt;span&gt;&lt;sup&gt;&lt;em&gt;d&lt;/em&gt;&lt;/sup&gt;&lt;sub&gt;&lt;em&gt;g&lt;/em&gt;&lt;/sub&gt;&lt;/span&gt;&lt;/span&gt;) modulatedbetween 2.75 and 3.57 eV. While the NiFH2 formulation (0.5% NiFe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt;) showed the highest structural order, increasingthe NiFe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; content to 1.0% (NiFH4) inducedlocalized interfacial disorder, as evidenced by an elevated Urbachenergy and a corresponding narrowing of the forbidden gap. Broadbanddielectric spectroscopy demonstrated that the frequency-dependentresponse is governed by Maxwell–Wagner–Sillarsinterfacial polarization and Koops’ phenomenological models.Unlike conventional trends, the NiFH4 sample emerged as the optimalformulation, exhibiting peak dielectric permittivity and enhancedparallel capacitance due to the expanded electroactive surface area.This impedance analysis conclusively demonstrated that charge carriersencounter their primary impedance barriers at the microstructuralinterfaces and grain boundaries, which consistently exhibit significantlyhigher resistance than the bulk material. Moreover, increasing theNiFe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; concentration systematically diminishedthese internal resistances, thereby simultaneously enhancing bothbulk and interfacial conductivity. The modeling further elucidatedthe capacitive dynamics of the system, revealing strong nonideal capacitiveeffects driven by interfacial polarization at low frequencies, whichtransitioned into highly stable dielectric behavior at higher frequencies.Ultimately, the synergistic combination of biomass-derived celluloseand magnetic nanoparticles positions these hydrogels as highly promisingcandidates for high-performance “green” energy storagesystems and flexible bioelectronic sensing platforms","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"62852–62865"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221863","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-Mediated Incorporation of Sulfated Cellulose Nanocrystals into PVAc Latex: A Comprehensive Structure–Property-Durability Investigations","authors":"Shahab Nasr,&nbsp;Pooria Khalili,&nbsp;Juliana Aristéia de Lima,&nbsp;Fathi Gouda,&nbsp;Gunnar Westman,&nbsp;Ivo Heinmaa,&nbsp;Mikael Skrifvars","doi":"10.1021/acsomega.6c06928","DOIUrl":"https://doi.org/10.1021/acsomega.6c06928","url":null,"abstract":"<p>The role of a redox initiator, in combination with anonionic surfactantand poly(ethylene glycol) methacrylate (MPEG), was investigated inthe synthesis of nanocomposites of sulfated cellulose nanocrystalsand vinyl acetate (VAc) via semibatch emulsion polymerization. Thisstudy also explored the effects of heat treatment, including prolongedexposure and annealing. An increase in the CNCs concentration ledto aggregation and the formation of larger, irregularly shaped polymerparticles. Microscopy analysis indicated increased surface roughnessat higher CNCs loadings. The reduction in the optical transparencyof the nanocomposites was mitigated by annealing. The contact angleof the untreated samples increased after thermal treatment, particularlyat higher CNCs concentrations, by approximately 160%. Water uptakewas minimized at 0.6 wt %, and the lowest permeability was observedat 1.9 wt % of CNCs/VAc. The glass transition temperature of the nanocompositeswas significantly reduced by 8 °C only under the combined effectof higher CNCs loading and annealing. Annealing resulted in an increasein the storage modulus, particularly for nanocomposites with 1.9 wt% of CNCs/VAc. Creep decreased significantly at high CNCs concentrationsafter annealing. The elastic modulus and ultimate strength increasedwith the CNCs content, achieving enhancements of 356% and 80% postannealingfor 1.9 and 2.5 wt % of CNCs/VAc, respectively. Finally, the thermalstability of the nanocomposites improved, although variations in theCNCs concentration had minimal additional impact. These results provideinsights into how CNC incorporation into poly(vinyl acetate) latexaffects the mechanical, barrier, and surface properties of water-basedcoatings in applications such as paper coating.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"11 41","pages":"63381–63401"},"PeriodicalIF":5.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221858","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}