A5050316838- Natural Fiber Reinforced Composites
- Polymer Nanocomposites and Properties
- Nanocomposite Films for Food Packaging
- biodegradable polymer synthesis and properties
- Food composition and properties
- Advanced Cellulose Research Studies
- Carbon Nanotubes in Composites
- Polymer Nanocomposite Synthesis and Irradiation
- Graphene research and applications
- Microbial Metabolites in Food Biotechnology
- Polysaccharides Composition and Applications
- Polymer crystallization and properties
- Graphene and Nanomaterials Applications
- Polymer Foaming and Composites
- Nanoparticles: synthesis and applications
- Electrospun Nanofibers in Biomedical Applications
- Diamond and Carbon-based Materials Research
- Flame retardant materials and properties
- Proteins in Food Systems
- Tribology and Wear Analysis
- Antimicrobial agents and applications
- Thermal properties of materials
- Fiber-reinforced polymer composites
- Nanomaterials for catalytic reactions
- Conducting polymers and applications
Universidad Autónoma de Coahuila
2011-2024
Centro de Investigación en Materiales Avanzados
2019-2024
Consejo Nacional de Ciencia y Tecnología
2009-2023
Centro de Investigación de la Caña de Azúcar de Colombia
2010-2022
Consejo Nacional de Humanidades, Ciencias y Tecnologías
2016-2018
Consejo Nacional de Ciencia y Tecnología
2016
Instituto Tecnológico de Saltillo
2016
Abstract A strategy for a circular economy is to reuse and modify agricultural wastes through green methodologies, which can be employed as high‐value raw materials produce sustainable materials. Thus, polybutylene adipate terephthalate (PBAT) composites containing plasma (P) ultrasound/plasma (UP) modified Agave fibers (AF) were prepared by the melt mixing process. The effect of content (10% 20%) type fiber on processing, structural, mechanical, water barrier performance PBAT was assessed....
Abstract This work was focused on the changes in structural features of pistachio shell (PS) waste upon alkaline and ultrasound treatment their potential as sustainable reinforcement fillers starch‐based films (SF). Scanning electron microscopy analysis revealed etching, thinning, cavities surface PS after alkaline/ultrasound treatment, which allowed NaOH species to act internally microstructure PS, promoting alteration functional groups CO CO hemicellulose lignin molecules, well an...
ABSTRACT Exploring new ecological and simultaneous processes to modify wood fibers (WF) by‐products is a required pathway toward circular economy sustainability. Thus, plasma‐activated water (PAW) ultrasound (U) were employed as alternative methods WF in continuous process. Such treatments promoted the etching cavities on surface that destabilized hydrogen bonds of hemicellulose lignin molecules, increasing cellulose fraction. The addition modified PLA matrix increased storage modulus (2937...
ABSTRACT A dual acetone‐ultrasound treatment was employed to devulcanize ground tire rubber, which then used prepare polypropylene/GTR composites by melt processing. The effect of the type GTR (acetone and treatment) content incorporated (10, 20, 30, 40, 50 wt%) on flow mechanical properties reprocessed PP studied. TGA results showed a decrease in additives treated GTR, improving interactions with polymer matrix as indicated MFI, FTIR, tensile modulus. that acetone‐ultrasound‐treated could...
Argon surface plasma treatment (APT) of poly(propylene)/silver (PP/Ag) and poly(propylene)/copper (PP/Cu) nanocomposite improves their antibacterial properties against pathogenic bacteria. Dispersions PP/Ag PP/Cu nanocomposites were prepared by sonication assisted melt mixing 0.05, 0.5, 5 w/w% metal nanoparticle/polymer compositions, then casted to form films that treated with argon plasma. Scanning electron atomic force microscopy showed APT increase the roughness exposed nanoparticles....
ABSTRACT Ground tire rubber (GTR) was modified by sulfuric acid in order to improve its compatibility with and reinforcement of a polypropylene (PP) matrix. Polymer composites PP/GTR were prepared melt mixing at different concentrations, maximum 50 wt % GTR. Studies Fourier transform infrared spectroscopy (FTIR), surface specific area BET (Brunauer, Emmett, Teller), scanning electron microscopy used characterize the untreated GTR treated GTR, while mechanical thermal properties assessed...
Copper nanoparticles (Cu‐NPs) with sizes lower than 31 nm were prepared by wet chemical reduction using copper sulfate solution, hydrazine, and mixture of allylamine (AAm) polyallylamine (PAAm) as stabilizing agents. The use AAm/PAAm leads to the formation Cu CuO nanoparticles. resulting nanostructures characterized XRD, TGA, TEM. average particle diameters determined Debye‐Scherrer equation. Analysis TEM, GS‐MS, 1 HNMR reveals that synthesized NPs AAm presented a coating similar...
In this study, the effect of pure and modified hexagonal boron nitride (h-BN) nanosheet incorporation on stability, viscosity, electrochemical behavior a waterborne emulsion acrylic coating was studied. The functionalization h-BN nanoplatelets with polyacrylic acid (PAA) plasma polymerization performed, successful surface modification determined through water dispersion testing, Fourier transform infrared spectroscopy thermogravimetric analysis, X-ray photoelectron spectroscopy, also by...
Although the porosity in Al-SiC metal matrix composites (MMC) can be diminished; its existence is unavoidable. The purpose of this work to study effect on Young’s modulus SiC reinforced aluminum composites. Finite element analysis performed based unit cell and representative volume approaches. reliability models validated by comparing numerical predictions against several experimental data ranging low- high-volume fractions good agreement found. It found that despite stress transfer from...
Abstract The viscoelastic and mechanical performance of sustainable raw materials on biodegradable matrices provide insights into how to develop improve that contribute the circular economy. Thus, we aim evaluate effect conventional (acid or alkali) dual (alkali/acid‐ultrasound) treatment Agave fibers, as well their rheological micromechanical polyvinyl alcohol (PVA)‐based composites. TGA results indicate treatments promote removal moisture, waxes, pectin, hemicellulose, lignin from fibers...
Surface modification of copper nanoparticles (CuNPs) was performed in a radiofrequency plasma reactor using acrylic acid, acrylonitrile, and methyl methacrylate monomers. Treated untreated CuNPs were analyzed by thermogravimetrical analysis, X-ray diffraction (XRD), transmission electronic microscopy, energy dispersive spectroscopy, Fourier transform infrared spectroscopy. The oxidation assessed XRD as function the treatment. antibacterial properties treated evaluated Pseudomonas aeruginosa...
The effect of acrylic acid (AA) and amine alcohol (DMAE) functionalization via plasma carbon nanofibers (CNF) on physical mechanical properties polypropylene‐CNF nanocomposites prepared by melt mixing was studied. behavior these functionalized CNF compared with a oxidation mixture sulphuric (H 2 SO 4 ) nitric (HNO 3 ). Two different types compatibilizers were used: an modified PP (PPgDMAE) maleic anhydride grafted (PPgMA). evidenced Raman spectroscopy, comparing the ratio peaks at 1371 1590...