Applied Clay Science最新文献

{"title":"Construction of superhydrophobic CoZnAl-LDH coating on anodized aluminum surfaces to enhance corrosion and wear resistance","authors":"Guixiang Wang ,&nbsp;Qizi Wu ,&nbsp;Maomao Guo ,&nbsp;Shilong Zhang ,&nbsp;Qiuyan Luo ,&nbsp;Hao Yu ,&nbsp;Xuyan Guo ,&nbsp;Fuqiu Ma ,&nbsp;Haining Feng ,&nbsp;Ruizhi Wu ,&nbsp;Boris Krit","doi":"10.1016/j.clay.2025.108025","DOIUrl":"10.1016/j.clay.2025.108025","url":null,"abstract":"<div><div>In this study, a novel CoZnAl-LDH coating was synthesized in-situ on anodized aluminum through a hydrothermal method without introducing trivalent metal salts. Subsequently, a vanadate-intercalated LDH-VS coating was fabricated via ion exchange and hexadecyltrimethoxysilane (HDTMS) self-assembly, which integrated long-term corrosion resistance, friction reduction, and superhydrophobicity into a single coating. The morphology and structure of the coatings were investigated using SEM, EDS, XRD, FT-IR, and XPS. The coating performance was evaluated through scratch tests, contact angle, electrochemical, and friction wear tests. The results demonstrated that the contact angle of the LDH-VS increased from 26° to 154° and remained above 120° even after prolonged immersion, exhibiting outstanding self-cleaning and antifouling properties. After 28 days of immersion in 3.5 wt% NaCl solution, the corrosion current density of LDH-VS decreased by four orders of magnitude to 8.09 × 10⁻⁹ A·cm⁻² compared to bare aluminum alloy and the microstructure remained intact, indicating excellent long-term corrosion resistance. Friction tests confirmed the superior friction reduction of the modified coating, with the average friction coefficient of LDH-VS decreasing to 0.28, significantly lower than that of the aluminum alloy. Scratch tests also verified the coating's excellent adhesion strength. This study provides new insights into the development and application of LDH in superhydrophobicity, long-term corrosion protection, and wear resistance.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"279 ","pages":"Article 108025"},"PeriodicalIF":5.8,"publicationDate":"2025-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Steam-assisted-crystallization synthesis of mesoporous hectorite: A universal adsorbent for rapid capture of methylene blue and copper ions","authors":"Derui Chen ,&nbsp;Chao Sun ,&nbsp;Keying Sun ,&nbsp;Mingyu Yan ,&nbsp;Shunyu Han ,&nbsp;Longbin Xu ,&nbsp;Xinyu Li ,&nbsp;Yongri Liang","doi":"10.1016/j.clay.2025.108026","DOIUrl":"10.1016/j.clay.2025.108026","url":null,"abstract":"<div><div>Eliminating organic dyes and heavy metal ions remains challenging in environmental remediation. Hectorite shows promise for this application due to its layered structure and negative surface charge, but conventional energy-intensive hydrothermal synthesis hinders scalable production. Herein, we develop a novel steam-assisted crystallization (SAC) strategy to synthesize mesoporous hectorite from leached natural clay. This one-step approach significantly reduces solvent use and energy requirements. According to the Langmuir model, the material exhibits exceptional adsorption capacities for methylene blue (MB, 603.3 mg·g⁻¹) and copper ions (Cu²⁺, 68.72 mg·g⁻¹), surpassing conventional adsorbents. Rapid equilibrium is achieved within 10 min (MB) and 5 min (Cu²⁺), facilitated by the abundance of active sites and mesoporous structure. MB adsorption involves electrostatic interactions, hydrogen bonding, and ion exchange, while Cu²⁺ uptake occurs primarily via complexation with secondary electrostatic contributions. This work enables the sustainable utilization of natural clay resources and the green, scalable production of high-performance mesoporous hectorite adsorbents.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"279 ","pages":"Article 108026"},"PeriodicalIF":5.8,"publicationDate":"2025-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructural, physico-mechanical, optical and photocatalytic characteristics of kaolin-based eucryptite glass ceramics","authors":"Ahmed Yahya ,&nbsp;Sherif Allam ,&nbsp;Ola N. Almasarawi ,&nbsp;Salwa A.M. Abdel-Hameed ,&nbsp;Bastian Raab ,&nbsp;AbdelMonem Soltan ,&nbsp;Esmat M.A. Hamzawy","doi":"10.1016/j.clay.2025.108024","DOIUrl":"10.1016/j.clay.2025.108024","url":null,"abstract":"<div><div>Lithium aluminosilicates glass ceramics were prepared from quarried kaolin and artificial lithium carbonate. Different techniques were used to characterize the starting batches, glasses and glass ceramics, these are: laser PSDs, XRD, XRF, DSC, SEM-EDAX, bulk density, CTE, microhardness, FTIR, UV-Vis spectrophotometer in addition to Factsage (8.3) thermodynamic modeling software. Results show that the Al/Si ratio and total impurities of kaolin-based batches influence the crystallization of non-cracked and directly bounded coated eucryptite with shielding rims of lithium metasilicates, nepheline, leucite and silicate glassy phase. Notably, the low-grade kaolin-based batch motivates the crystallization of mature lithium aluminosilicate glass ceramics microstructure which enhances the bulk density (2.41 g/cm³), apparent porosity (0.7%), water absorption (0.29%), microhardness (394 kg/mm²), thermal expansion coefficient (₋0.76×10^-7°C^-1) at (25-500°C) and UV-V reflectance up to 86%. The mature microstructure with shielded rimmed eucryptite exhibits outstanding photocatalytic performance, achieving up to 92% removal of MB dye. Such lithium aluminosilicate glass ceramics could be promising in microelectronics and photocatalysis applications.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"279 ","pages":"Article 108024"},"PeriodicalIF":5.8,"publicationDate":"2025-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smectite functionalization for targeted zearalenone immobilization: Investigating the key role of surface chemistry and adsorption mechanisms","authors":"Jakub Matusik ,&nbsp;Klaudia Dziewiątka ,&nbsp;Youjun Deng","doi":"10.1016/j.clay.2025.108023","DOIUrl":"10.1016/j.clay.2025.108023","url":null,"abstract":"<div><div>This study investigated the efficiency of modified smectites for zearalenone (ZEN) removal, with a focus on the role of structural characteristics and surface chemistry. Cation exchange and/or calcination yielded poor performance (&lt;10% removal). In contrast, organic functionalization with amphiphilic molecules, significantly enhanced ZEN adsorption by interlayer expansion and increased hydrophobicity. Among the tested modifiers, hexadecyltrimethylammonium bromide (C16) exhibited the highest removal efficiency (∼85%; 0.1 ppm ZEN, 200 mg/L dosage), driven by high organic loading correlated with smectites' cation exchange capacity. The C16-modified smectites had hydrophobic domains containing neutral C16 molecules, which resulted in optimal structural conditions for ZEN uptake. The smectites modified with ethyl lauroyl arginate (LAE®) and cocamidopropyl betaine (CAPB) demonstrated lower ZEN removal (∼70% and ∼60%, respectively), limited by lower organic loading caused by functional groups of modifiers. Vitamin B1-functionalization showed high efficiency for Na-rich smectite (47.6±0.6%) due to efficient Na⁺ to B1 exchange and thus enhanced surface hydrophobization. All modified materials retained high performance under acidic conditions, while alkaline pH reduced efficiency, except for the C16-modified materials. Adsorption kinetics were rapid and independent of the temperature (18°C and 37°C), though the C16 materials showed slower uptake due to colloidal stability issues. Linear adsorption isotherms followed the Freundlich model, supporting a partitioning mechanism. The C16- and B1-modified smectites were resistant to competitive pepsin interactions in simulated gastric fluid, unlike the LAE® and CAPB. These findings emphasize the importance of appropriate functionalization of smectites for ZEN adsorption and support the development of adsorbents for mycotoxin mitigation in animal feed.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"279 ","pages":"Article 108023"},"PeriodicalIF":5.8,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hematite neocrystallisation derived from the experimental alteration of montmorillonite in NaCl solution","authors":"Ritwick Sudheer Kumar,&nbsp;Laurence N. Warr,&nbsp;Balu R. Thombare,&nbsp;Tobias Manzel,&nbsp;Georg H. Grathoff","doi":"10.1016/j.clay.2025.108008","DOIUrl":"10.1016/j.clay.2025.108008","url":null,"abstract":"<div><div>Smectite-rich bentonites are widely used as engineered barriers, and consequently, their stability and alteration behaviour have been extensively studied. Small hematite crystals frequently form during the alteration of bentonite under oxidising conditions; however, the mechanism of Fe₂O₃ formation remains poorly understood, especially its relationship to smectite alteration. This study presents mineralogical and geochemical analyses of hematite neocrystallisation from the experimental alteration of a purified montmorillonite fraction isolated from a Bavarian bentonite. Experiments were conducted in eight batch reactors containing monomineralic Na-saturated montmorillonite and a 0.1 M NaCl solution, at temperatures ranging from 160 to 220 °C and durations of 1–5 months, while other parameters were kept constant. Hematite crystallisation and smectite alteration mechanisms were investigated using transmission electron microscopy, X-ray diffraction and solution chemistry analyses. Results indicate that Fe ions released from partial dissolution (up to 7 wt%) of montmorillonite were mobilised and incorporated into neocrystallised hematite, producing log-normal crystal size distributions consistent with supply-controlled ripening mechanisms of crystal growth in a closed system. Time-dependent data indicate hematite growth is kinetically supply-controlled and self-limiting in low-Fe smectites, suggesting minimal long-term impact on engineered barrier performance. As iron oxides on clay minerals can mediate electron transfer in fluctuating redox environments, hematite formation may influence subsequent alteration processes, including microbial activity. Mass balance calculations suggest the formation of up to 6 % amorphous SiO₂, potentially limiting further reaction progress under these conditions.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"279 ","pages":"Article 108008"},"PeriodicalIF":5.8,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient Zn2+ transport and stable electrolyte/electrode interface achieved in acid-modified palygorskite-based quasi-solid-state electrolyte for high-performance zinc-ion batteries","authors":"Zhuo Zhang ,&nbsp;Jingyi Zeng ,&nbsp;Ming Liu ,&nbsp;Bing Xue","doi":"10.1016/j.clay.2025.108015","DOIUrl":"10.1016/j.clay.2025.108015","url":null,"abstract":"<div><div>The parasitic reactions induced by free water molecules in the electrolyte of aqueous zinc-ion batteries severely disrupt the stability of the electrolyte/electrode interface, significantly affecting the application performance of the batteries. To mitigate the adverse effects of free water molecules in the electrolyte of aqueous zinc-ion batteries, this paper utilized acid-treated palygorskite as the matrix and prepared a palygorskite-based quasi-solid-state electrolyte by adsorbing liquid electrolyte. This approach reduced the reactivity of water molecules in the electrolyte while enhancing the conductivity of zinc ions. The acid treatment with hydrochloric acid achieved fine-tuning of the palygorskite structure, increasing the number of surface -OH groups and enhancing the specific surface area of palygorskite to 199.16 m² g⁻¹. The plastic limit-liquid limit test results of the palygorskite-salt-water system showed that acid treatment improved the plastic limit (52.6 %) and liquid limit (68.4 %) of palygorskite, confirming that acid treatment could enhance the electrolyte adsorption capacity of palygorskite. Furthermore, acid treatment reduced the Zeta potential of palygorskite (−38.25 mV), strengthening the electrostatic attraction field of palygorskite in the palygorskite-salt-water system. This significantly improved the “relay-style” transmission efficiency of zinc ions in the palygorskite diffusion layer, promoting uniform deposition of zinc ions and inhibiting the growth of zinc dendrites. Simultaneously, it effectively suppressed the transmission of sulfate ions in this diffusion layer, thereby inhibiting the occurrence of side reactions and stabilizing the electrolyte/electrode interface. Based on the unique effect of acid treatment on the microstructure adjustment of palygorskite, the quasi-solid-state electrolyte prepared from acid-treated palygorskite exhibited an ionic conductivity of 20.84 mS cm⁻¹ and an ionic transference number of 0.87. The Zn//Zn symmetric cell assembled with this quasi-solid-state electrolyte demonstrated stable cycling for 3000 h at a current density of 0.2 mA cm⁻², with a polarization voltage less than 40 mV. The assembled Zn//MnO₂ full cell exhibited an initial discharge specific capacity of 240.57 mAh g⁻¹ at a current density of 0.33 A g⁻¹, and the average coulombic efficiency after 500 cycles was approximately 100 %.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"279 ","pages":"Article 108015"},"PeriodicalIF":5.8,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Steel-bentonite interaction at elevated temperatures","authors":"Šárka Šachlová ,&nbsp;Vlastislav Kašpar ,&nbsp;Michaela Matulová ,&nbsp;Petr Bezdička ,&nbsp;Zbyněk Veselka ,&nbsp;Petr Večerník","doi":"10.1016/j.clay.2025.108011","DOIUrl":"10.1016/j.clay.2025.108011","url":null,"abstract":"<div><div>The long-term durability of carbon steel, proposed as the outer layer of waste disposal packages in the Czech deep geological repository concept, is influenced by anaerobic conditions, elevated temperatures, irradiation, bentonite composition and water content. These factors were examined in a small-scale laboratory experiment within the European Joint Programme on Radioactive Waste Management, project CONtainer CORrosion under Disposal conditions (EURAD CONCORD). Carbon steel coupons were embedded in compacted (1600 kg⋅m^-3) bentonite of Ca/Mg-type (BCV) and reference bentonite of Na-type (MX-80), subjected to water saturation under a pressure of 5 MPa, heated to 90 °C and 150 °C, and irradiated with a ⁶⁰Co source at 0.4 Gy·h⁻¹ for 6 to 18 months.</div><div>Corrosion rates were primarily affected by temperature and saturation level. Similar rates were observed for both bentonites at 150 °C over 18 months, while lower rates were recorded for MX-80 at 90 °C and at ambient temperature. Irradiation had a negligible effect. Corrosion product composition strongly depended on temperature. At 90 °C, Fe-Ca‑carbonates formed in both bentonites, along with Fe-Ca(Mn-Mg)‑carbonates in BCV. At 150 °C, Fe-Si-O-rich layers and Fe-oxides developed, probably linked to the dissolution of amorphous silica and its incorporation into alteration products.</div><div>Elevated temperatures altered the mineralogy and chemistry of the bentonite. Changes included shifts in smectite basal spacing, enrichment with Fe^x+ and Mn²⁺, and modifications to exchangeable cation composition, including reduced Mg²⁺ content. Increased SO₄²⁻ and Cl⁻ concentrations in bentonite water leachates, particularly in BCV at 90 °C and MX-80 at 150 °C, partially correlated with higher corrosion rates. These results highlight the interconnected influence of temperature, bentonite type, and chemical interactions on carbon steel corrosion in repository-relevant environments.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"279 ","pages":"Article 108011"},"PeriodicalIF":5.8,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sepiolite-based hybrid photocatalyst via covalent immobilization of carbon quantum dots for visible-light water remediation","authors":"J.M. Sánchez-Silva ,&nbsp;J.L. Belmonte-Vázquez ,&nbsp;F. Carrasco-Marín ,&nbsp;R. Ocampo-Pérez ,&nbsp;E. Padilla-Ortega ,&nbsp;A. Aguilar-Aguilar","doi":"10.1016/j.clay.2025.108019","DOIUrl":"10.1016/j.clay.2025.108019","url":null,"abstract":"<div><div>Carbon quantum dots (CQDs) have emerged as promising nanomaterials due to their exceptional photophysical properties and environmental compatibility. However, their nanoscale size and colloidal nature often hinder their recovery and reuse in heterogeneous systems. In this study, were demonstrated the application of sepiolite as an efficient clay mineral support for the covalent immobilization of CQDs, leading to the formation of a stable hybrid material (Sep-NH₂-CQDs). The hybrid material was thoroughly characterized and confirmed the covalent bond of CQDs. Transmission electron microscopy (TEM) showed homogeneously distributed CQDs with an average size of 2.81 ± 0.8 nm. Fluorescence microscopy confirmed visible emission across a broad spectral range, while UV–vis diffuse reflectance spectroscopy (DRS) demonstrated improved light absorption between 400 and 700 nm. Photocatalytic tests showed that Sep-NH₂-CQDs achieved degradation efficiencies exceeding 90 % for methylene blue (MB), crystal violet (CV), and rhodamine B (RhB) under visible light in 90 min. The material also exhibited efficient performance in multicomponent dye mixtures, highlighting its potential for real wastewater treatment. Scavenger experiments indicated that the covalently grafting of CQDs promotes the generation of reactive oxygen species, which plays a critical role in the degradation mechanism. Overall, this work demonstrates the potential of modified sepiolite as a sustainable platform for CQD immobilization, offering a green and effective route for clay valorization and visible-light-driven water remediation applications.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"278 ","pages":"Article 108019"},"PeriodicalIF":5.8,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145359092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanistic insights for (alkyl)methacrylate-based cationic hybrid gels reinforced with sepiolite, montmorillonite, mica, bentonite and kaolin: A comparative thermodynamic study with all-in-one formulations","authors":"Beril Tanc Kaya ,&nbsp;Rabia Bozbay ,&nbsp;Nermin Orakdogen","doi":"10.1016/j.clay.2025.108016","DOIUrl":"10.1016/j.clay.2025.108016","url":null,"abstract":"<div><div>A series of clay-based cationic hybrids from <em>N</em>,<em>N</em>-dimethylaminoethyl methacrylate and 2-acrylamido-2-methyl-1-propanesulfonic acid in the presence of various clays; montmorillonite (Mt), bentonite (Bnt), sepiolite (Sep), kaolin and mica was prepared by in-situ free-radical polymerization. The primary objective was to understand the macroscale properties of ionically modified (alkyl)methacrylate-based polymers reinforced with nanometer-sized clays. Water absorption, repeated on-off switching in salt solutions, elasticity and efficiency in removal of anionic indigo carmine (IC) dye, widely used in textile industry for denim production, were comparatively analyzed depending on the clay type. Compared to Sep and Mt-integrated hybrids, the mechanical property was weaker due to the inhomogeneous distribution in the structure, while the mica and kaolin-integrated gels were resistant to high compression. Mt- and Sep-addition increased the swelling by four-fold, while the swelling in the presence of mica was limited. Hybrids exhibited good salt resistance and pH-sensitive swelling, with largest change in the volume being observed in Mt-doped gels, while least change was in Kaolin-doped ones. Based on the effect of salinity, the swelling of hybrids in aqueous solutions of monovalent and divalent metal nitrates followed the decreasing order as KNO₃ &gt; NaNO₃ &gt; Ba(NO₃)₂. Regardless of clay type, hybrid cryogels prepared at low polymerization temperature followed Fickian diffusion, while at higher temperatures, the clay type altered the mechanism and non-Fickian diffusion was observed in hybrid hydrogels doped with Mt, kaolin and mica. Anionic IC adsorption, which reached equilibrium in 30 min, varied between 93.4 % and 97.6 %. The presence of Kaolin and Bnt caused a significant increase in adsorption, while a decrease was observed in presence of Sep. Adsorption isotherms determined by three parameter models were compared with two-parameter models in linear and non-linear fitting of equilibrium data; Freundlich isotherm model and pseudo-first order kinetic model had the best fitness. Comparative results demonstrated that clay-integrated (alkyl)methacrylate-based cationic hybrids can be employed as effective and economical adsorbents for removal of anionic dyes from aqueous environments.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"279 ","pages":"Article 108016"},"PeriodicalIF":5.8,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145327140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of the functionalized clay on the poly(lactic acid)/polybutylene adipate terephthalate (PLA/PBAT) based biodegradable nanocomposites: Thermal and rheological properties","authors":"Mariia Kostenko ,&nbsp;Yurij Stetsyshyn ,&nbsp;Khrystyna Harhay ,&nbsp;Yuriy Melnyk ,&nbsp;Volodymyr Donchak ,&nbsp;Semen Khomyak ,&nbsp;Oleksandr Ivanukh ,&nbsp;Milan Kracalik","doi":"10.1016/j.clay.2025.108020","DOIUrl":"10.1016/j.clay.2025.108020","url":null,"abstract":"<div><div>PLA/PBAT-based (Ecovio) nanocomposites were prepared using both pristine and functionalized clays, including PBMA- and PBA-grafted brushes, which were selected for their surface energy compatibility with the PLA phase. XRD analysis confirmed the successful intercalation of clay and good dispersion within the polymer matrix. Thermal analysis revealed the typical two-step degradation pattern (PLA followed by PBAT), with APTES-functionalized clays lowering the peak degradation temperature of PLA to 305 °C. In comparison, PBA-grafted clays increased it to 329 °C compared to 322 °C for neat Ecovio. The addition of nanoclays to Ecovio-based composites did not significantly affect the overall crystallinity of the system. Thermomechanical and FTIR analyses indicated that APTES promoted polymer degradation during processing, whereas PBA grafting helped mitigate these effects. Rheological measurements revealed increased melt elasticity in Ecovio nanocomposites containing PBA-grafted clays without compromising processability, a key advantage for compostable film applications in packaging. Overall, the inclusion of PBA-grafted clays improved both the compatibility and thermal stability of PLA/PBAT-based nanocomposites. Moreover, this work introduces, for the first time, a straightforward strategy for tuning the properties of multi-tonnage industrial composites such as Ecovio, providing a practical approach to enhance performance while preserving compostability.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"278 ","pages":"Article 108020"},"PeriodicalIF":5.8,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145333280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}