Compatibility of plastics and phase change materials: comparative study via gravimetric analysis and tensile tests of plastics exposed to inorganic, organic and bio-based phase change materials

Nowadays, steel has become an important part of our life due to its extensive applications in automotive, household appliances, business machine and heavy construction such as marine and chemical industries. Mild steel is selected for construction because of its mechanical properties and machine-ability at a low price, while at the same time; they have to be resisted against corrosion phenomena. Nano TiO2 can be used for high lubrication‚ high conductivity‚ and high adsorption rate as well as catalytic performance‚ chemical industry‚ aerospace, and other fields. Characterization of this TiO2 are made by X-ray diffraction, Particle size analysis, Scanning electron microscopy, Energy dispersive X-ray spectroscopy, Thermo gravimetric and differential thermal analysis techniques.

A study was conducted to examine the effects of graphene nanoplatelets (GNPs) on the thermal characteristics of polymer nanocomposites, which are extensively utilised in packaging, biomedicine, and microelectronics. Following ASTM guidelines, samples of GNPs and epoxy were made by shear mixing and solution compounding. Thermo Gravimetric Analyzer (TGA) and Differential Scanning Calorimetry (DSC) were used to examine the samples' thermal stability and glass transition temperature. The results showed that weight retention improved with increasing graphene content, while the addition of GNPs considerably improved thermal properties. As the GNP content increased from 20% to 30%, the glass transition temperature (Tg) climbed from 50°C to 53°C. This study provides important information for material developers by highlighting the possibility for enhanced thermal performance of graphene-dispersed polymer nanocomposites.

ABSTRACT Growing demand for sustainable bonding technologies has intensified the search for high-performance bio-based adhesives that can replace petrochemical systems without compromising mechanical integrity or environmental safety. A critical gap persists in solvent-free, castor-oil-rich formulations that simultaneously deliver high bond strength and verified biocompatibility. We addressed this gap by developing a one-pot, high castor oil usage, solvent-free protocol in which castor oil was urethanized and chain-extended with isophorone diisocyanate at NCO:OH ratios from 3/2 to 7/6. The adhesives were characterized by Fourier Transform Infrared Spectroscopy (FTIR)，Thermal Gravimetric Analyzer (TGA)，Differential Scanning Calorimetry (DSC), 180° peel, lap-shear, cytotoxicity and in vivo biosafety assays. The optimized composition (R = 5/4) exhibits a glass-transition temperature of −30.0°C and a 5% mass-loss temperature of 250.6°C; at 70% bio-based content it delivers a 180° peel strength of 37.2 N/25 mm and a lap-shear strength of 256.0 kPa, exceeding values reported for representative commercial tapes (0.3–4.4 N/in). Cytotoxicity screening on L929 and Vero cells revealed ≥84.0% viability, and murine patch and wound studies showed no erythema, inflammation, or tissue necrosis. These findings establish a scalable route to high-bio-content adhesives that meet industrial performance criteria and satisfy emerging biomedical safety standards.

This study presents a comprehensive physicochemical and mineralogical characterization of Erusu clay from Ondo State, Nigeria, with the aim of evaluating its suitability for industrial applications. Analytical techniques employed include X-ray Fluorescence (XRF), X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Thermal Gravimetric and Differential Thermal Analysis (TGA/DTA), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM/EDS), and standard plasticity and mechanical tests. The XRF results revealed that silica (SiO₂) and alumina (Al₂O₃) are the predominant oxides, with mean values of 54.8% and 24.5%, respectively, yielding a SiO₂/Al₂O₃ ratio of 1.89, typical of kaolinitic clays. XRD and FTIR analyses confirmed kaolinite (62.3%) as the dominant mineral phase, with quartz, illite, and hematite as accessory minerals. Thermal analysis indicated a total weight loss of 8.2%, with dehydroxylation occurring at approximately 525°C, suggesting good thermal stability. The clay exhibited medium plasticity (PI = 19.6%), low swelling (8.3%), and satisfactory mechanical properties, including green and dry compressive strengths of 118 kN/m² and 410 kN/m², respectively. Its refractoriness, ranging between 1670–1700°C (Cone 32–33), classifies it as a high-refractory clay. The integrated results indicate that Erusu clay possesses favourable structural, thermal, and mechanical characteristics suitable for refractory linings, foundry moulds, and ceramic applications. This study contributes to the valorization of indigenous raw materials for sustainable industrial development in Nigeria.

A dihydromyricetin molecularly imprinted polymer was fabricated via a multi-affinity synergistic strategy. Specifically, the deep eutectic solvent (choline chloride/methacrylic acid at molar ratio of 1:2) served as a non-covalent functional monomer, interacting with dihydromyricetin via hydrogen bonds, 3-acrylamidophenylboronic acid acted as a covalent functional monomer to form boronate affinity covalent bonds with dihydromyricetin, and zinc acrylate formed boronate affinity interactions with dihydromyricetin. The synergistic integration of these three components endowed the polymer with a ternary recognition site simultaneously capable of hydrogen bonding, boronate affinity, and metal chelation. After polymerization, the as-prepared dihydromyricetin molecularly imprinted polymer was characterized by scanning electron microscope, energy dispersive spectrometer, Fourier-transform infrared spectrometer, thermal gravimetric analysis, and x-ray photoelectron spectrum. The effects of imprinting conditions, pH of incubation solution, adsorbent amount, selectivity, stability and reusability of dihydromyricetin molecularly imprinted polymer were also investigated. Under optimal adsorption conditions, the maximum adsorption capacity was calculated to be 359.04 mg/g in 240 min, and the imprinted factor was 1.40, aligned better fitted with Freundlich model and pseudo-second-order kinetic model. The better selectivity of dihydromyricetin molecularly imprinted polymer for dihydromyricetin in the presence of other structurally related compounds indicated its robust anti-interference capability. Furthermore, the dihydromyricetin molecularly imprinted polymer was employed as an adsorbent for the selective extraction of dihydromyricetin from vine tea, with the enrichment efficiency from 68.82% to 70.38%. These results demonstrated that the synergistic imprinting strategies could enhanced the affinity of dihydromyricetin molecularly imprinted polymer toward dihydromyricetin, offering a promising approach for the separation and purification of dihydromyricetin from natural products.

Phenol-assisted depolymerization of Acacia mangium tannin for strong and fast-curing biomass-based phenolic resins.

Heavy metal pollution remains a global environmental challenge, calling for sustainable and low-cost sorbents. Here, we upcycle coir fiber into a bioinspired adsorbent by depositing a polydopamine (PDA) coating (PDA/Coir fiber) for efficient Cu(II) and Cd(II) removal from water while improving effluent safety. Scanning electron microscopy (SEM), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), and thermal gravimetric analysis (TGA) confirm successful PDA functionalization and associated structural changes. Compared with pristine coir fiber, PDA/Coir fiber shows 6.84-fold and 12.86-fold higher adsorption capacities for Cu(II) and Cd(II), respectively. Adsorption is well described by the Langmuir isotherm, indicating monolayer-dominated binding. Kinetic analysis shows that the adsorption of both ions follows the pseudo-second-order model. The fiber also exhibits good reusability over four adsorption-desorption cycles. Importantly, cytotoxicity assays of the treated solutions show substantially reduced biotoxicity after metal removal. Overall, PDA/Coir fiber offers a sustainable and low-cost platform for heavy metal removal by integrating efficient adsorption capabilities and safety implications.

The cement industry is a major contributor to global CO2 emissions, creating a need for monitoring techniques that support carbon capture strategies while assessing material performance. This study investigates the accelerated carbonation curing of cement mortar using linear and nonlinear ultrasonic sensing methods, alongside mechanical and gravimetric measurements. Mortar specimens were carbonated for 1-28 days and evaluated using ultrasonic pulse velocity (UPV), the Sideband Peak Count Index (SPC-I) for nonlinear ultrasonic response, compressive strength testing, and mass-based CO2 uptake analysis. UPV showed sensitivity primarily to bulk material changes, with comparatively less distinction among the observed responses during carbonation curing. In contrast, the SPC-I captured distinct nonlinear responses associated with matrix evolution. Early-age carbonation (<7 days) produced increased nonlinearity, attributed to shrinkage-induced microcracking, whereas extended curing led to reduced SPC-I values, consistent with carbonation curing age. These trends exhibited an inverse correlation with compressive strength, which increased by up to 38.9% on the 28th day compared to the control specimens. Gravimetric analysis confirmed effective CO2 sequestration, with average specimen mass gains reaching 2.62%. The findings demonstrate that nonlinear ultrasonic sensing provides a sensitive, nondestructive approach for monitoring carbonation curing and linking acoustic signatures to mechanical performance and carbon uptake in cement-based materials.

Corrosion of API 5L X70 carbon steel in mixed acidic oil and gas environments remains a critical challenge, prompting the need for eco-friendly, cost-effective inhibitors such as plant-based extracts. In this research, the corrosion inhibition of carbon steel (API 5LX70) using the weight-loss method and Hibiscus sabdariffa Zobo Leaf Extracts (ZLE) in a mixed acid medium was studied to confirm its anti-corrosion properties. The prepared steel sample was characterised by XRF analysis, which indicated a high iron content (Fe2O3: 89.68 wt%). Acid-base mixtures (H₂SO₄, HNO₃, HCl, NaCl, Na₂CO₃) were optimised by using RSM/Simplex Lattice Tool in order to simulate the amphoteric conditions within a typical oil and gas well. Optimum inhibitor concentration of ZLE leaf extracts in acid-based solution was established as 1.1 g/L, 1.42 g/L and 1.72 g/L, respectively. The physicochemical analysis indicated that ZLE leaf extract was acidic (pH:3.46) with a moisture content of 0.001% while the phytochemical properties were rich in secondary metabolites, especially flavonoids, being the mostabundant (22.46) for ZLE leaf extract, confirming its suitability as a corrosion inhibitor. The weight loss and corrosion rate of the carbon steel sample decrease as the ZLE extract concentration rises, but they increase with the temperature and immersion time. At the highest concentration (1.72g/L) of ZLE leaf extracts, the highest inhibitor efficiency was 91.89% with attendant corrosion rate of 22.63 mm/yr at 80°C for 6 hr, while the lowest corrosion rate was 1.09 mm/y at 40°C for 4hr. The study concluded that the ZLE leaf extracts at a concentration of ≥1.72 g/L could serve as a green corrosion inhibitor for carbon steel pipelines in the Nigerian oil and gas industries.

Fine particulate matter (PM2.5) drives millions of global premature deaths via respiratory and systemic effects, exacerbated by bound trace elements. In South Africa, studies prioritize metros, overlooking midsized cities like Bloemfontein, where biomass burning, industry, and dust elevate pollution. The first age-stratified inhalation health risk assessment of PM2.5 and trace elements in this setting was conducted using samples collected over 14 months (June 2020–August 2021) at Pelonomi Hospital and University of the Free State (UFS). Gravimetric analysis measured mass; and energy-dispersive X-ray fluorescence quantified trace elements from UFS samples. U. S. EPA methods assessed non-carcinogenic (hazard quotients, HQs) and carcinogenic risks (CRs) for infants, children, and adults. Annual PM2.5 averaged 6 µ m−3 at Pelonomi (12× WHO’s 5 µg m−3 guideline) and 11 µg m−3 at UFS (2.2×). Vanadium (V) showed the highest non-carcinogenic risk across ages, and chromium (Cr) had a CR of 4.32 × 10−5. V ranked Category A (priority), while Cl, Mn, Si, S, Cr, Ni, Fe, and Cu ranked Category B. Winter increased PM2.5 concentrations and associated risks by 40%, underscoring regulatory shortfalls and the need for emission controls, clean energy transitions, and alignment of national standards with WHO guidelines to reduce pediatric risks (SDGs 3, 7, 11).

Three-dimensional (3D) printing has emerged as a versatile and sustainable manufacturing route for developing natural fiber–reinforced polymer composites. In this study, the objective is to enhance the mechanical performance and surface quality of 3D-printed polylactic acid (PLA) composites by incorporating powdered pineapple leaf fiber (PLF). Composite filaments were produced using a single-screw extruder and subsequently used to fabricate test specimens through fused deposition modeling. A response surface methodology based on a central composite design was employed to evaluate the influence of fiber content (SFC), infill density (SID), and printing speed (SPS) on ultimate tensile strength (UTS) and surface roughness (Ra). The developed models demonstrated strong statistical reliability, with R 2 values of 0.9823 for UTS and 0.9689 for Ra, as supported by ANOVA. Multi-response optimization yielded an overall desirability of 0.973, corresponding to 34.80 wt% SFC, 77.42% SID, and 62.89 mm/s SPS, resulting in a maximum tensile strength of 73.89 MPa and a minimum surface roughness of 3.36 µm. The optimized composite was further examined to establish the processing–structure–property relationship. Hydrogen-bonding interactions between the hydroxyl groups of poly (lactide) fibers and the carbonyl groups of poly (lactide) were detected using FTIR spectroscopy. X-ray diffraction studies showed a moderate increase in the degree of crystallinity of the composite as a result of fiber-induced nucleation. Thermal gravimetric analysis (TGA) indicated an increase in the thermal stability of the composites. Differential scanning calorimetry (DSC) showed that the thermal transitions were more uniform. The results provide evidence that optimized processing results in good bonding between the polymer and the fiber; the composites are, therefore, characterized by structural uniformity, superior thermomechanical properties, and a data-driven approach to the creation of sustainable, high-performance PLA-based biocomposite materials for use in additive manufacturing processes.

In this work, we report the synthesis of a series of novel compounds based on a 2,3-diquinoxaline core, among which one derivative, QER1, uniquely exhibits both liquid crystalline properties and aggregation-induced enhanced emission (AIEE) in THF-water mixtures. Polarized optical microscopy, differential scanning calorimetry, temperature-dependent X-ray diffraction (for QER1), and thermal gravimetric analysis are employed to study their thermal properties. The thermal study shows that QER1 exhibits the Colh phase at room temperature with a low clearing point. The photophysical studies reveal that the compounds show violet emission in chloroform solutions with λem between 403 and 435 nm. They exhibit a nontypical aggregation-induced emission or AIEE in THF-water mixtures, with the emission intensity increasing to 7.9-fold for QE-F and QER3. Substituting the quinoxaline ring with various groups at the 6 and 7 positions modulates the band gap, with the CN-substituted compound showing the most significant decrease. At the same time, substitution with alkoxy chains exhibits a slight decline. The optimized geometry of all of the derivatives has twisted conformations; however, only QE-CN has spatially separated highest occupied molecular orbital and lowest unoccupied molecular orbital, while others show significant overlap of orbitals. Our findings reveal a strong correlation between the structure and properties of molecules, resulting in distinct functional properties such as liquid crystalline properties and AIEE in QER1. This compound exhibits a hole mobility of 0.19 × 10-5 cm2 V-1 s-1 at room temperature Colh phase. This work offers a rational strategy for the development of multifunctional materials with potential applications.

The development of novel copolymers as donor materials for organic solar cells and optimization of their properties are particularly interesting, but remain challenging. This research report presents the first study on the effect of copolymerization time on the synthesis of the copolymer poly-(propyleneimine) tetra-(N-methyl-2-pyrrolylmethylene amine)-co-poly-(3-hexylthiophene-2,5-diyl) (P3HT-PP) using the chemical oxidative polymerization method. Through thorough experiments and copolymer characterization, a preferred copolymerization time is proposed, ensuring that the properties of the synthesized copolymers are significantly improved. The structural, optical, morphological, thermal, and rheological properties of synthesized copolymers at different copolymerization times (24, 48, and 72 h) were investigated by using nuclear magnetic resonance (NMR) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, thermal gravimetric analysis, Raman spectroscopy, small-angle X-ray scattering, rheometry, X-ray diffraction, ultraviolet-visible spectroscopy, and photoluminescence spectroscopy. Additionally, the effects of copolymerization time on the LUMO/HOMO energy levels and charge-transfer processes were examined by using cyclic voltammetry and electrochemical impedance spectroscopy, respectively. It was revealed that the copolymer synthesized for 24 h (P3HT-PP24) has the best properties suitable for organic solar cell applications as a donor material as compared to copolymers synthesized for 48 h (P3HT-PP48) and 72 h (P3HT-PP72). The P3HT-PP24-based organic solar cell exhibited the best photovoltaic performance due to reduced photogenerated charge recombination and more efficient exciton separation.

Magnesium alloys are promising biodegradable implant materials, but their rapid corrosion in physiological environments limits their clinical applications. This work is focused on the development of cementitious coatings inducing magnesium phosphate formation on magnesium AZ31 alloys. First, the alloy surfaces immersed in orthophosphoric acid (OPA) solutions with six additives of various functions (sodium chloride, magnesium chloride, calcium nitrate, magnesium nitrate, trisodium citrate, and hydroxyethyl cellulose (HEC)) were comparatively analyzed to understand the effect of solution chemistry on surface evolution. OPA solutions were also saturated with respect to magnesium ions, which effectively limited surface degradation. Sample mass and solution pH were monitored for 21 days, and depositions were characterized using SEM, EDX, and electrochemical methods to identify the surface composition and investigate its effectiveness against Mg degradation. In the next stage, alloy plates were dip-coated with the multicomponent suspension of the most effective composition (OPA, MgCl2, HEC, and Mg-saturated deionized water). The phase evolution of the dried samples in 3.5 wt % NaCl solution was monitored with regular gravimetric, pH, quantitative XRD, SEM, EDX, and electrochemical Tafel analyses. Samples passivated despite the high chlorine concentration, as initially formed newberyite crystals, were replaced by Mg oxychlorides, Mg phosphates, and Mg hydroxide in order, in response to the shift in solution pH from acidic to alkaline values that is driven by the dissolution and transformation of the alloy and coating phases. Thermally cross-linking HEC improved the stability of the coatings, which slightly retarded the degradation kinetics. In vitro cell culture tests validated the coated AZ31 as both being biocompatible and potentially bioactive. Thus, the phosphatizing coating approach offers a promising strategy for controlled biodegradation of magnesium implants in physiological environments.

Green nanotechnology offers a sustainable and eco-friendly pathway for large-scale nanoparticle synthesis, minimizing environmental hazards associated with conventional chemical methods. In this study, we report the phyco-synthesis of iron oxide nanoparticles (FeONPs) using Arthrospira sp., a cyanobacterium enriched with diverse bioactive compounds, as both a reducing and stabilizing agent. Despite extensive exploration of algal mediated nanoparticle synthesis, the biomedical potential of Arthrospira derived FeONPs remains largely underexplored. Here, FeONPs were synthesized via a two-step process involving the reaction of Arthrospira sp. aqueous extract with ferric chloride under optimized conditions, followed by calcination. The resultant FeONPs were comprehensively characterized through ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), thermo gravimetric analysis (TGA), dynamic surface analysis (DSA), and zeta potential measurements. Biomedical evaluation was performed through multiple in vitro assays, including assessments of antioxidant, antimicrobial, anti-inflammatory, anti-diabetic, and cytotoxic activities. The FeONPs exhibited pronounced antioxidant potential (IC50: 81.91–453.04 µg/mL), and notable antifungal activity against Aspergillus flavus (IC50: 22.51 µg/mL). Furthermore, they demonstrated dose-dependent α-amylase inhibition (IC50: 591 µg/mL), low cytotoxicity (IC50: 1324 µg/mL), and excellent biocompatibility. This study pioneers Arthrospira sp. as a scalable, cost-effective biofactory for the sustainable production of FeONPs, bridging the gap between green synthesis and biomedical applications. Future investigations will focus on in vivo validation, elucidation of antimicrobial mechanisms, and integration into drug delivery systems. With their multifunctional bioactivities, Arthrospira sp. mediated FeONPs hold significant promise for next-generation nanotherapeutics, leading towards a new paradigm in sustainable nanomedicine.

Abstract The degradation of organic dyes in wastewater is a major environmental concern worldwide because of their toxicity and carcinogenic effects. In recent years, photocatalytic processes emerged as a favorable technology for the treatment of organic pollutants. Herein, we investigated the effectiveness of ultraviolet (UV)/hydrogen peroxide (H 2 O 2 )/magnetite (Fe 3 O 4 )—induced degradation process to degrade bromocresol purple dye in water. Fe 3 O 4 nanoparticles were prepared via co‐precipitation and characterized using various analytical techniques. Fe 3 O 4 nanoparticles exhibited UV absorption at 438 nm with direct and indirect band gaps of 1.89 and 0.45 eV, respectively. Energy‐dispersive x‐ray spectroscopy confirms iron (~0.7, 6.5, 7 keV) and oxygen (~0.5 keV). Thermal gravimetric analysis indicates thermal stability of up to 850°C with ~2.31% weight loss. The impact of operating parameters such as pH, reaction time, photocatalyst, and H 2 O 2 quantity on photodegradation efficiency was investigated. The highest percentage degradation efficiency of each parameter on dye degradation was determined as follows: pH (73.03%), reaction time (39.63%), catalyst amount (32.77%), and H 2 O 2 volume (37.33%). Kinetic studies showed the photocatalytic degradation of bromocresol purple dye by Fe 3 O 4 nanoparticles followed pseudo‐first‐order kinetics with a rate constant (k) of 1.4 × 10 −3 min −1 . The proposed photocatalytic mechanism involving excitation of dye molecules, electron injection into Fe 3 O 4 conduction band, and subsequent generation of reactive species highlights a strong potential of Fe 3 O 4 nanoparticles as efficient photocatalyst for removing bromocresol purple dye from water. The results of this study contribute to the development of effective photocatalytic systems for the remediation of dye‐contaminated wastewater.

The slow evaporation method was employed to growth high-quality single crystals of pure glycine lithium nitrate and doped with NaNO 3 and KNO 3 at room temperature. To determine the diffraction planes and crystal structure, the produced crystals were exposed to powder XRD technique. The functional groups of the samples were determined by recording FTIR spectra. Analyses of the grown samples' ultraviolet (UV)-visible spectrum characteristics were conducted. It was found that for nonlinear applications, the cutoff wavelength and optical transparency required to be 300 nm, because wavelength around 300nm can relevant for certain nonlinear optical processes. The band gap for NaNO3 doping concentration is 6.07eV at 20 mol % and 5.84 eV at 60 mol %. The energy band gap for KNO 3 doping concentration is 6.21eV at 20 mol % and 5.88 eV at 60 mol %. The thermal gravimetric analysis (TGA) confirmed up to 200°C, the formed crystals remain stable. Mechanical hardness was tested on high quality crystals using Vickers micro hardness tester for varied applied loads ranging from 1 gm to 10 gm. The hardness of doped NaNO3 and KNO 3 crystals are higher than that of pure Glycine Lithium Nitrate.

In this study the Al2O3 and functionalized Aluminium oxide [Al2O3F] were synthesised and characterized by Fourier transform infrared spectroscopy Transmission Electron Microscopy thermal gravimetric analysis and Scanning Electron Microscopy with Energy Dispersive X-Ray Analysis. Since corrosion of mild steel in aggressive environments is a persistent challenge, this work focuses on improving epoxy coatings using metal oxide nanoparticles. The corrosion behaviour of the epoxy, epoxy containing Al2O3, and Al2O3F was determined by electrochemical technique in 3.5 wt% NaCl solution. Surface changes of the coated substrates were analysed by pull-off test, salt spray test, and contact angle measurement. The results confirmed the superior performance of epoxy-Al₂O₃F coating over neat epoxy. Adding higher concentrations of Al₂O₃ and functionalized Al₂O₃ significantly improved the coating’s protective performance. In summary, this research provides significant understanding for the development of advanced coatings with enhanced protective properties against corrosion, paving the way for practical applications in challenging environmental conditions.

Raman spectroscopy and thermal gravimetric analysis (TGA) were used to evaluate the thermal and atmosphere stability of Sr1.9VMoO6-δ (SVMO-19), an A-site deficient double perovskite. Motivated by previous reports describing SVMO-19's unprecedented electrical conductivity under reducing atmospheres, studies described in this work determine SVMO-19's stability under conditions commonly encountered in high temperature solid oxide electrolysis and fuel cell applications. Vibrational Raman data show that SVMO-19 is stable up to 1000 °C under reducing, inert, and CO2 containing atmospheres. Under air, however, in situ Raman data show that SVMO-19 phase separates at temperatures ≥ 600 °C. The primary degradation products include a scheelite phase (SrMoO4) as well as a vanadium containing single perovskite, SrVO3, and a vanadium containing pyrochlore Sr2V2O7. TGA measurements suggest that SVMO decomposition in air begins at even lower temperatures (400 °C). TGA data show that SVMO is stable under N2 at temperatures as high as 900 °C, consistent with Raman data. SVMO oxidation kinetics are analyzed using both a simple kinetic model consisting of two independent first-order processes and an Avrami model. The data are better described by the pair of first order processes, but an Arrhenius analysis using both models result in an activation energy (E a) for SVMO degradation between 0.48 and 0.65 eV. Taken together, these findings are considered in the context of properties required by electrode materials used in reversible solid oxide electrochemical cells.