Universidade Federal do Piauí

Academic presentation on perovskite nanocrystals for optoelectronics, covering ABX3 structure, colloidal synthesis, quantum confinement, photophysics, surface ligands, passivation, stability, films, and charge transport. It explores applications in LEDs, solar cells, photodetectors, lasers, micro-LEDs, superlattices, and single-photon technologies. Suitable for university-level study and review in nanomaterials, semiconductor physics, photonics, and optoelectronics.

Academic presentation on reinforcement corrosion in concrete structures, covering passivation, electrochemical mechanisms, carbonation, chloride ingress, pitting corrosion, cracking, spalling, bond loss, and structural consequences. It also addresses inspection and diagnosis methods, corrosion prevention, cathodic protection, electrochemical treatments, repair strategies, and post-repair monitoring. Suitable for university study and review in reinforced concrete durability, corrosion assessment,...

Academic presentation on thermoplastic starch and its blends with biodegradable polyesters, including PLA, PBAT, PBS, PHA, and PCL. Covers starch structure, plasticization, extrusion, miscibility, morphology, compatibilization, mechanical and barrier properties, rheology, characterization techniques, and biodegradation. Also addresses packaging and agricultural applications, providing a structured resource for studying biodegradable polymer materials.

Academic presentation on metallic glasses and bulk metallic glasses, covering amorphous structure, glass formation, high strength, deformation mechanisms, and fracture toughness. The material examines shear transformations and shear bands, structural relaxation and rejuvenation, fracture mechanics, damage tolerance, glass-matrix composites, fatigue, thermoplastic forming, and additive manufacturing. Suitable for studying the relationships among structure, processing, mechanical behavior, and fra...

Academic presentation on biodegradable superabsorbent polymers, covering hydrogels, swelling, water absorption, polymer networks, porosity, crosslinking, synthesis, processing, characterization, and biodegradation. It examines renewable materials including cellulose, starch, chitosan, alginate, lignin, and agro-industrial residues. Applications include agriculture, nutrient release, hygiene products, wound dressings, drug delivery, and water treatment, making the material useful for university-l...

Academic presentation on silicate ceramics covering silicate and aluminosilicate structures, clay minerals, quartz, feldspars, mullite, raw materials, rheology, forming, drying, firing and sintering. It also addresses microstructure, vitrification, porosity, defects, XRD, SEM, thermal analysis, mechanical behavior and applications including porcelain, porcelain stoneware, refractories, cordierite and glass ceramics. Useful for university-level study and review in ceramic materials, materials sci...

Academic presentation on polymer chemistry covering molecular structure, functional groups, chain architecture, stereochemistry, crystallinity, molar mass, dispersity, and polymerization mechanisms. It also addresses polymer characterization by FTIR, NMR, SEC, DSC, DMA, and TGA, together with hydrolysis, oxidation, chain scission, crosslinking, recycling, and biodegradation. Suitable for studying and reviewing polymer chemistry, polymer science, and materials science.

Academic presentation on ceramic matrix composites, covering matrix families, fiber and particulate reinforcements, interfaces and interphases, reinforcement architectures, fracture mechanisms, damage tolerance, CVI, PIP, reactive infiltration, sintering, thermal behavior, oxidation, environmental protection, fatigue, creep, characterization, inspection, and engineering applications. The material is suitable for university study and review in materials science, advanced ceramics, composite mater...

Academic presentation on polymer matrix composites covering thermoset and thermoplastic matrices, fibers and particles, interfaces and interphases, micromechanics, anisotropy, and laminate design. It examines manufacturing routes including lay-up, vacuum infusion, resin transfer molding, prepregs and autoclave, pultrusion, filament winding, molding, and additive manufacturing, together with defects, damage, fatigue, creep, testing, and inspection. The material also addresses engineering applicat...

Academic presentation on composite materials covering fibers, matrices, particles, interfaces, volume fractions, load transfer, micromechanics, anisotropy, laminates, mechanical behavior and failure mechanisms. It also examines major manufacturing routes, including hand lay-up, vacuum infusion, RTM, autoclave processing, pultrusion, filament winding and additive manufacturing. The material includes testing, inspection, engineering applications, sustainability, recycling and review exercises, mak...

Academic presentation on the selection, formulation and mechanisms of polymer additives. Covers plasticizers, antioxidants, stabilizers, lubricants, pigments and flame retardants. Includes dosage calculations, masterbatch dilution and teaching cases involving PE films, flexible PVC and PLA parts. Comparative tables, diagrams and graphs support the study and review of relationships between additive selection, polymer processing and material properties.

Presentation on stress and strain curves, tensile testing, and mechanical properties. Covers elasticity, plasticity, Young’s modulus, yielding, strain hardening, necking, ductility, and toughness, including engineering and true measures. Examines metals, ceramics, polymers, and fiber composites, with additional topics on viscoelasticity, creep, stress relaxation, and fatigue. Includes worked calculations and conceptual questions with explained answers to support study and review in mechanics o...