Preparation of a carbon fiber brush for solid-phase microextraction of petroleum hydrocarbons from environmental water samples.

Thermal Resistance and Microstructural Response of Metakaolin- and Fly Ash–Based Geopolymers Modified with Nanosilica

Effect of elevated temperature on strength and microstructure of metakaolin-based geopolymer composites having fireclay and silica sands

Photoluminescent wood able to alter color upon exposure to UV light was produced. A composite comprising rare-earth aluminate nanoparticles (RAN) as a photoluminescent agent and cellulose nanocrystal-supported alginate (CNCA) as a hosting material was infiltrated into delignified hardwood (DLW), yielding transparent hardwood with photoluminescence characteristics. RAN is recognized for its excellent photostability and heat resistance. An optimal technique for generating translucent and photoluminescent hardwood entails the dispersion of RAN in cellulose nanocrystal-reinforced alginate, ensuring the absence of agglomeration. Cellulose nanocrystals were synthesized from microcrystalline cellulose by acid hydrolysis, demonstrating diameters of 7-12 nm. Cellulose nanocrystals were used as a nanofiller and a dispersant to avert the agglomeration of RAN. Both photoluminescent analysis and colorimetric parameters indicated a green color under UV light and a colorless appearance under visible light. The morphological analysis of RAN showed sizes ranging from 35 to 120 nm. The luminescent hardwoods were analyzed using several spectroscopic and microscopic methods. When excited at 375 nm, the photoluminescent hardwood exhibited an emission readout at 517 nm. Increasing the RAN level resulted in enhanced water resistance and superior protection against UV radiation. The luminous hardwood exhibited quick and reversible activity to UV radiation without fatigue.

Sarsasapogenin ameliorates Alzheimer's disease by dual inhibition of RIPK1-mediated necroptosis and pyroptosis.

Processing of porous SiC/cordierite composites with enhanced thermal shock resistance and negative thermal expansion

Developing sustainable high-performance composites is crucial for achieving circularity in advanced structural materials. Herein, we report a fully bio-based strategy for constructing recyclable carbon fiber-reinforced composites (CFRCs) based on dynamic non-isocyanate polyurethane (NIPU) matrices. Three cardanol-derived amine curing agents with tunable functionalities were rationally designed and synthesized from renewable cardanol, and subsequently reacted with lignin-derived cyclic carbonates (LCCs) to form a robust yet reprocessable NIPU network. Structure-property analyses reveal that the molecular architecture of the cardanol-derived curing agents governs the balance between network rigidity and flexibility, thereby tailoring the thermomechanical performance of the NIPUs. Optimizing carbonate structures and amine functionality yields polymers that combine high mechanical strength (tensile strength: 44.5 MPa) with excellent thermal and solvent resistance. The presence of hydroxyurethane linkages confers dynamic covalent character via reversible transcarbamoylation, imparting efficient reprocessability and pronounced multiple-shape-memory effects. Notably, the reprocessed NIPU retains >75% of its initial tensile strength after three hot-pressing cycles. As CFRC matrices, the optimized NIPU ensures outstanding interfacial adhesion and closed-loop recyclability, allowing solvent-assisted deconstruction to recover carbon fibers with nearly preserved mechanical integrity. This research establishes an eco-friendly and scalable approach to producing entirely renewable, recyclable and superior-performance composite materials for sustainable engineering applications.

Investigation of heat transfer performance of asphalt pavements at different compaction levels based on CT reconstruction

Elucidating superoxide dismutase interactions with whey protein isolate using multi-spectroscopy, deep learning, and molecular dynamic simulations.

Spray-dried microencapsulated Fridericia chica (Bonpl.) extract: A stable functional ingredient for cold-chain food applications.

Aramid nanofiber (ANF) composites are promising thermal interface materials due to their excellent mechanical and thermal stability, prominent electrical insulation properties, flame retardance and remarkable chemical corrosion resistance, making them capable of operating under extreme conditions. However, their low intrinsic thermal conductivity limits their application for heat dissipation in high-power electrical components. This review systematically summarizes recent advances in enhancing the thermal conductivity of ANF composites from three critical perspectives: filler selection and design, interface modification strategies, and construction of ordered thermal-conduction pathways. We summarize the advantages of composites with different types of thermally conductive fillers (ceramic, carbon, metal, and MXene fillers), analyze the effects of hydrogen bonding, electrostatic attraction, and chemical crosslinking on interfacial thermal resistance, and discuss 0D/1D/2D, gradient and multilayer ordered thermal-conduction pathway design for achieving high thermal conductivity. Future challenges and research directions are also proposed, providing guidance for the development of next-generation high-performance thermal management materials.

Design of novel bigel beads based on sodium alginate and monoglyceride for nutraceuticals delivery: Structural properties, gastrointestinal fate, and potential as dysphagia foods.

Dynamic mechanical analysis reveals reversible thermal effects in insect tibial cuticle.

Tracking transformations of polymeric carbohydrates from green coffee beans to spent coffee grounds: Mannan-dominant structures and valorization implications.

Maleic anhydride-mediated synergistic chain extension of poly(lactic acid): Dual network for ultrahigh heat resistance and sustainable recyclability

Robust heat resistance and barrier BO-PLLA/PDLA/PPC films by constructing highly dense and oriented stereocomplex crystalline

Flame retardant silicone foam composites with long-term heat resistance for sodium-ion battery thermal runaway protections

Waste-oil evaporation is widely used onboard ships to reduce water content and sludge volume prior to incineration. Repeated onboard observations indicated that part of the evaporated water returned to the waste-oil tank despite continuous vapor generation, suggesting vent-line condensation. This study investigates vent-line condensation in a commercial bulk carrier using onboard observations combined with a simplified thermal-resistance and energy-balance approach. The system consisted of a waste-oil service tank connected to an approximately 30 m uninsulated DN80 vent line routed through the engine room. Condensate returning through the vent-line drain was collected and measured during a representative 12-hour evaporation operation. The analysis showed that approximately 428 L of water was evaporated, whereas approximately 96 L condensed within the vent line and returned to the waste-oil tank, corresponding to nearly one quarter of the evaporated water. Sensitivity analysis demonstrated that condensation was governed primarily by heat loss from the vent pipe to the engine-room environment, with external natural convection representing the dominant thermal resistance. The predicted condensation agreed closely with onboard observations. Vent-line condensation may reduce evaporation effectiveness and introduce uncertainty into onboard waste-management records because returned condensate is not measured separately. Applying a 30 mm mineral-wool insulation layer reduced the predicted condensation from approximately 96 L to approximately 20 L. These findings identify vent-line condensation as an operationally significant but often overlooked phenomenon and demonstrate that vent-line insulation provides a simple and effective means of reducing condensation-related return flows and improving process reliability.

Crosslinked polyethylene (XLPE) is widely used in high-voltage insulating cable coatings; however, issues such as crosslinking by-products, incomplete or excessive crosslinking, and resulting surface defects limit its performance. Although polypropylene (PP) coatings reinforced with dielectric materials have been proposed as an alternative, their fragility remains a challenge. In addition, few studies have systematically investigated the simultaneous improvement of thermal, mechanical, and electrical insulating properties through hybrid nanofiller incorporation into PP matrices. This study introduces random-PP-based composites as promising alternatives with enhanced elasticity, tensile strength, thermal stability, and electrical insulation. Hybrid PP composites containing SiO₂, Al₂O₃, SiC, and MgO nanoparticles were prepared using a 60cm³ internal mixer. Both discrete and hybrid nanofiller additions significantly affected composite performance. The melting temperature increased from 170.8°C to 171.5°C, while the decomposition onset temperature improved from 425.9°C to 455.5°C, indicating greater thermal resistance. Electrical volume resistance rose from 1.53 × 10¹⁵ to 38.70 × 10¹⁵ Ω·cm, and surface resistance reached 25.70 × 10¹⁵ Ω. The dielectric constant increased from 2.74 to 2.81, reflecting improved charge-storage capability. Although toughness decreased with nanofiller incorporation, Young's modulus increased from 2.64 to 3.00 GPa, particularly in highly loaded hybrid systems. scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) analyses confirmed fracture-surface characteristics and nanoparticle dispersion. These results demonstrate that hybrid nanofillers effectively enhance the multifunctional performance of PP nanocomposites for next-generation high-voltage insulating materials.

Acetylation-modified phosphoglycerate dehydrogenase is associated with enhanced serine biosynthesis and one‑carbon metabolism, supporting heat resistance in Pleurotus ostreatus.