6 documents found, page 1 of 1
Evaluation of tensile properties in in-plane auxetic carbon/epoxy and carbon-gl...
Veloso, Cristiano; Mota, Carlos; Cunha, Fernando; Sousa, Jose; Dias, Gustavo; Uribe, Braian Esneider Buitrago; Fangueiro, RaúlAuxetic laminates, i.e. with a negative Poisson’s ratio (NPR), show great engineering promise, with enhancements in shear resistance, fracture toughness, energy absorption, and delamination and damage extension limitation. This study focuses on the tensile properties of in-plane (IP) NPR fibre-reinforced polymer (FRP) laminates, namely carbon/epoxy (C/E) and carbon-glass/epoxy (C-G/E) laminates, with lay-up seq...
Synergistic effects in hybrid buckypapers of graphene nanoplatelets and carbon ...
Silva, Thais da; Silva, Thiély da; Corrêa, Rieyssa; Ribeiro, Rui; Morgado, Guilherme; Montagna, Larissa; Uribe, Braian Esneider BuitragoHybrid buckypapers (BPs) composed of graphene nanoplatelets (GNPs) and carbon nanotubes (CNTs) hold great potential for applications in flexible electronics, electromagnetic shielding, and energy storage. In this study, hybrid BPs were fabricated and characterized to evaluate their structural, thermal, and electrical properties. Hybrid BPs with varying GNP/CNT mass ratios (0/100, 25/75, 50/50, 75/25, 85/15, 90/...
Synthesis of thermoset elastomer from microbial oil derived from the fermentati...
Capeto, Ana Paula; Uribe, Braian Esneider Buitrago; Pintado, Manuela; Guimarães, Ana Sofia; Oliveira, Ana L. S.In the context of the 21st century, the integration of diverse perspectives within the circular economy framework, encompassing waste management, economic growth, and environmental sustainability, stands out as a paramount challenge. Addressing this challenge, an innovative avenue emerges through the application of microbial oil to replace traditional petroleum in the synthesis of essential commodity chemicals....
Building a greener future: Advancing concrete production sustainability and the...
Capêto, Ana Paula; Jesus, Manuel; Uribe, Braian Esneider Buitrago; Guimarães, Ana Sofia; Oliveira, Ana L. S.The integration of waste materials in extrudable cement mixtures has the potential to make the construction industry more sustainable by reducing carbon footprints and developing eco-friendly materials. This along with advancements in 3D concrete printing (3DCP) provides engineering and architectural benefits by reducing material waste and costs. In this paper, the impact of waste incorporation on properties of...
Application of sound waves during the curing of an acrylic resin and its compos...
Uribe, Braian Esneider Buitrago; Rodrigues, Joana; Costa, Pedro; Paiva, Maria C.Research into particulate polymer composites is of significant interest due to their potential for enhancing material properties, such as strength, thermal stability, and conductivity while maintaining low weight and cost. Among the various techniques for preparing particle-based composites, ultrasonic wave stimulation is one of the principal laboratory-scale methods for enhancing the dispersion of the disconti...
Fire-resistant bio-based polyurethane foams designed with two by-products deriv...
Capêto, Ana Paula; Amorim, Manuela; Sousa, Sérgio; Costa, Joana R.; Uribe, Braian Esneider Buitrago; Guimarães, Ana Sofia; Pintado, ManuelaThere is a growing interest in replacing conventional fossil-based polymers and composites with waste-based materials and fillers for environmental sustainability. This study designed water-blown polyurethane rigid foams using two by-products from the Amyris fermentation process of producing β-farnesene. The distillation residue (FDR) served as the main polyol component in the foam’s formulation (PF), supplemen...