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UniversidaddeCádiz
Functional polymer devices by high pressure processes for biomedical applications SCPolymers

UniversidaddeCádiz

Functional polymer devices by high pressure processes for biomedical applications SCPolymers
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Articles (18)

 

Generation of Spherical Microparticles of Moringa Leaves through a Supercritical Antisolvent Extraction Process

Generation of Spherical Microparticles of Moringa Leaves through a Supercritical Antisolvent Extraction Process

Posted 12 de May de 2023

Antonio Montes, Diego Valor, Clara Pereyra and Enrique Martínez de la Ossa The objective of this work was evaluation of the supercritical antisolvent extraction (SAE) process to generate microparticles with antioxidant activity from Moringa leaves. A biodegradable polymer was used as an inductor of particle precipitation. An ethanolic extract of 25 mg/mL was used in […]

Generation of high-porosity cerium oxide nanoparticles and their functionalization with caryophyllene oxide using supercritical carbon dioxide

Generation of high-porosity cerium oxide nanoparticles and their functionalization with caryophyllene oxide using supercritical carbon dioxide

Posted 12 de May de 2023

Ignacio García-Casas, Antonio Montes, Desiré M. de los Santos, Diego Valor, Clara Pereyra, Enrique Martínez de la Ossa Oral diseases affect to millions people worldwide. Metallic nanoparticles are used as novel treatment due to its antimicrobial, antifungal, anti-inflammatory properties. Supercritical anti-solvent process and supercritical solvent impregnation process have been used to create cerium oxide nanoparticles […]

Co-precipitation of grape residue extract using sub- and supercritical CO2 technology

Co-precipitation of grape residue extract using sub- and supercritical CO2 technology

Posted 11 de May de 2023

Ana Paula da Fonseca Machado, Antonio Montes, Diego Valor, María Teresa Fernandez-Ponce, Gerardo Fernandez Barbero, Mario Roberto Marostica Júnior, Clara Pereyra, Enrique Martínez de la Ossa In this work, the co-precipitation of ethanol extract from grape residue with a biodegradable and biocompatible polymer, polyvinylpyrrolidone, was studied using sub- and supercritical carbon dioxide (CO2) technology, namely […]

Inclusion of natural antioxidants of mango leaves in porous ceramic matrices by supercritical impregnation

Inclusion of natural antioxidants of mango leaves in porous ceramic matrices by supercritical impregnation

Posted 11 de May de 2023

M. C. Guamán-Balcázar, A. Montes, D. Valor, Y. Coronel, D. M. De los Santos, C. Pereyra, E. Martínez de la Ossa Mango is one of the most important, medicinal tropical plants in the world from an economic point of view due to the presence of effective bioactive substances as co-products in its leaves. The aim […]

Formation of PLGA–PEDOT:PSS Conductive Scaffolds by Supercritical Foaming

noticia (18 March 2023)
Posted 26 de April de 2023

Antonio Montes, Diego Valor, Yaiza Penabad, Manuel Domínguez, Clara Pereyra and Enrique J. Martínez de  la Ossa The usage of conjugated materials for the fabrication of foams intended to be used as therapeutic scaffolds is gaining relevance these days, as they hold certain properties that are not exhibited by other polymer types that have been […]

Generation of Highly Antioxidant Submicron Particles from Myrtus communis Leaf Extract by Supercritical Antisolvent Extraction Process

Generation of Highly Antioxidant Submicron Particles from Myrtus communis Leaf Extract by Supercritical Antisolvent Extraction Process

Posted 17 de March de 2023

Diego Valor, Antonio Montes, María Calderón-Domínguez, Inass Aghziel, Ismael Sánchez-Goma, Martín Alcalá, Ma Carmen Durán-Ruiz y Clara Pereyra Las partículas submicrónicas se han producido a partir de un extracto etanólico de hojas de Myrtus communnis utilizando tecnología de dióxido de carbono supercrítico, en lo sucesivo denominada extracción antisolvente supercrítica (SAE). Se ha investigado la influencia […]

Foaming of polycaprolactone and its impregnation with quercetin using supercritical CO2

Foaming of polycaprolactone and its impregnation with quercetin using supercritical CO2

Posted 26 de September de 2022

Ignacio García-Casas, Antonio Montes, Diego Valor, Clara Pereyra and Enrique J. Martínez de  la Ossa Foamed polycaprolactone impregnated with quercetin was carried out with batch foaming technique using supercritical CO2. Experimental design was developed to study the influence of pressure (15-30 MPa), temperature (308-333 K) and depressurization rate (0.1-20) on the foam structure, melting temperature […]

Determining the Optimal Conditions for the Production by Supercritical CO2 of Biodegradable PLGA Foams for the Controlled Release of Rutin as a Medical Treatment

Determining the Optimal Conditions for the Production by Supercritical CO2 of Biodegradable PLGA Foams for the Controlled Release of Rutin as a Medical Treatment

Posted 26 de September de 2022

Diego Valor, Antonio Montes , Marilia Monteiro , Ignacio García-Casas, Clara Pereyra  and Enrique Martínez de la Ossa Poly(D,L,-lactide-co-glycolide) (PLGA) foam samples impregnated with rutin were successfully produced by supercritical foaming processes. A number of parameters such as pressure (80–200 bar), temperature (35–55 C), depressurization rate (5–100 bar/min), ratio lactide:glycolide of the poly(D,L,-lactide-co-glycolide) (50:50 and […]

An Attempt to Optimize Supercritical CO2 Polyaniline- Polycaprolactone Foaming Processes to Produce Tissue Engineering Scaffolds

An Attempt to Optimize Supercritical CO2 Polyaniline- Polycaprolactone Foaming Processes to Produce Tissue Engineering Scaffolds

Posted 26 de September de 2022

Antonio Montes , Diego Valor , Laura Delgado, Clara Pereyra and Enrique Martínez de la Ossa Conjugated polymers are biomaterials with high conductivity characteristics because of their molecular composition. However, they are too rigid and brittle for medical applications and therefore need to be combined with non-conductive polymers to overcome or lessen these drawbacks. This […]

Development of Porous Polyvinyl Acetate/Polypyrrole/Gallic Acid Scaffolds Using Supercritical CO2 as Tissue Regenerative Agents

Development of Porous Polyvinyl Acetate/Polypyrrole/Gallic Acid Scaffolds Using Supercritical CO2 as Tissue Regenerative Agents

Posted 23 de September de 2022

Diego Valor , Antonio Montes , Antonio Cózar, Clara Pereyra and Enrique Martínez de la Ossa Scaffolds are advanced devices employed in tissue engineering, as they are intended to mimic the characteristics of extracellular matrices. In this respect, conjugated materials are gaining relevance in the manufacturing of the foams used for therapeutic scaffolds, since they […]