Materiales avanzados

Materiales avanzados

Biomimetic Synthesis of Nor?Cedrene and Nor?Isozizaene Sesquiterpenoids and Exploration of Their Olfactive Properties
27/06/2022 - The chemical synthesis of isozizaene? and cedrene?type nor?sesquiterpenoids from a simple bio?inspired precursor nor?bisabolyl epoxide is described. This key intermediate undergoes selective...
A Mechanics Analysis of Carbon Fiber Plain-Woven Thermoset Prepreg during Forming Process Considering Temperature Effect
28/06/2022 - The preforming quality of carbon fiber plain-woven thermoset prepreg (CFPWTP) is critical to the performance of composite aerospace parts. The deformation ability of the CFPWTP material during...
Polyurethane-Based Gel Electrolyte for Application in Flexible Electrochromic Devices
28/06/2022 - For the application in flexible electrochromic devices (ECDs) on plastic substrates, a new polyurethane-based gel electrolyte was manufactured. In this context, the curing behavior and the influence...
A Comparative Study to Evaluate the Essential Work of Fracture to Measure the Fracture Toughness of Quasi-Brittle Material
27/06/2022 - In the present work, three different woven composite laminates were fabricated using the hand lay-up method. The woven reinforcement fibres were carbon fibres (CFRP), glass fibres (GFRP-W) and...
New Cytochalasin Derivatives from Deep?Sea Cold Seep?Derived Endozoic Fungus Curvularia verruculosa CS?129
21/06/2022 - Two new antimicrobial cytochalasin derivatives, 6 ? , 7 ? ?epoxydeoxaphomin C ( 1 ) and 12?hydroxydeoxaphomin C ( 2 ), a new natural occurring product 24?nor?cytochalasin B ( 3 ), together...
Anti-Wear and Anti-Erosive Properties of Polymers and Their Hybrid Composites: A Critical Review of Findings and Needs
26/06/2022 - Erosion caused by the repeated impact of particles on the surface of a substance is a common wear method resulting in the gradual and continual loss of affected objects. It is a crucial problem in...
Investigation on DMA, Fatigue and Creep Behaviour of Rice Husk Ash Biosilica-Prickly Pear Short Fibre-Reinforced Epoxy Resin Composite
25/06/2022 - High toughness epoxy bio-composites are prepared using prickly pear short fiber and rice husk ash (RHA) biosilica particles for low cost and light weighted engineering applications. The prime...
Experimental Study on Repairing Corroded Cracks by Electrophoretic Deposition
23/06/2022 - The corrosion of reinforced concrete could reduce its mechanical properties and cause concrete cracking. Electrophoretic deposition is a new method for repairing rust-cracked reinforced concrete. In...
Thermal Conductivity of Nanoporous Materials: Where Is the Limit?
23/06/2022 - Nowadays, our society is facing problems related to energy availability. Owing to the energy savings that insulators provide, the search for effective insulating materials is a focus of interest....
Effect of Graphene/Spherical Graphite Ratio on the Properties of PLA/TPU Composites
22/06/2022 - Wave-absorbing materials are developing in the direction of “light weight, wide frequency band, thin layer and high strength”, and it is difficult to achieve the synergy between wave-absorbing...
Natural Additives Improving Polyurethane Antimicrobial Activity
21/06/2022 - In recent years, there has been a growing interest in using polymers with antibacterial and antifungal properties; therefore, the present review is focused on the effect of natural compounds on the...
The effect of oxidated glucose on the performance and structures of polyamide resins synthesized by citric acid and hexanediamine
01/09/2022 - A thermoset polyamide resins were synthesized by citric acid and hexanediamine (CH), and was modified by oxidized glucose (OG). The effect of oxidation time and addition amount of oxidized glucose...
Graphene-polyaniline nanocomposite based coatings: Role of convertible forms of polyaniline to mitigate steel corrosion
- Present work addresses the synthesis of different structural forms of polyaniline (PANI) and their nanocomposites with graphene as functional fillers to epoxy coating for minimizing mild steel...
Selective oxidations using a cytochrome P450 enzyme variant driven with surrogate oxygen donors and light
16/06/2022 - Cytochrome P450 monooxygenase enzymes are versatile catalysts which have been adapted for multiple applications in chemical synthesis. Mutation of a highly conserved active site threonine to a...
Effects of a new compatibilizer on the mechanical properties of TPU/PEBA blends
- In this work, to improve the mechanical properties of thermoplastic polyurethane (TPU), polyether-block-amide elastomer (PEBA) was used to modify it through a blending method. Due to the low...
Synthesis of polyester thermosets via internally catalyzed Michael-addition of methylene compounds on a 2-(trifluoromethyl)acrylate-derived building block
- The Michael-addition reaction of methylene compounds has been known and used for>120 years in organic chemistry synthesis. We report herein a new type of application for this reaction: the...
Effects of Thermochromic Fluorane Microcapsules and Self-Repairing Waterborne Acrylic Microcapsules on the Properties of Water-Based Coatings on Basswood Surface
19/06/2022 - The effect of the addition of fluorane microcapsules and urea formaldehyde resin (UF) waterborne acrylic resin microcapsules on the comprehensive properties of the water film on the surface of...
Contributions of atmospheric plasma treatment on a hygrothermal aged carbon/epoxy 3D woven composite material
01/08/2022 - In this paper, the effects of hygrothermal ageing and atmospheric plasma surface treatment on a 3D carbon/epoxy-amine woven composite material are studied. The goal is to study the surface...
Recent advances in flame retardant epoxy systems from reactive DOPO–based phosphorus additives
01/08/2022 - Epoxy resins are widely applied in industry for producing fire safe materials. Unfortunately, epoxy resins have the disadvantage of being highly flammable and thus require suitable modifications...
Functionalization of nitrogen-doped graphene quantum dot: A sustainable carbon-based catalyst for the production of cyclic carbonate from epoxide and CO2
01/04/2023 - A series of organic compounds were successfully immobilized on an N-doped graphene quantum dot (N-GQD) to prepare a multifunctional organocatalyst for coupling reaction between CO2 and propylene...
Compressive Properties of Polyurethane Fiber Mattress Filling Material
16/06/2022 - There is an inevitable trend toward exploring new, environmentally friendly fibers that can be used as raw material for mattresses with moderate hardness and air-permeable characteristics....