Autor según el artículo: Rajczak E; Tylkowski B; Constantí M; Haponska M; Trusheva B; Malucelli G; Giamberini M

Departamento: Enginyeria Química

Autor/es de la URV: Constantí Garriga, Magdalena / Giamberini, Marta / Tylkowski, Bartosz

Palabras clave: Toxicity Therapy Tea powder Propolis Matrix Green tea Galla-chinensis Films Extracts Constituents Biological-properties Antibacterial activity Acrylic membrane propolis antibacterial activity acrylic membrane

Resumen: © 2020 by the authors. We examine the behaviour of acrylic resin-based membranes containing natural antioxidants, such as Galla Chinensis tea powder extract (TP) and Taiwanese green propolis (TGP), in different concentrations ranging between 5 and 20 wt %. Membrane morphology was investigated by means of Environmental Scanning Electron Microscopy (ESEM), while the UV-curing reaction was monitored by Fourier-Transform Infra-red (FTIR) spectroscopy. In most cases Thermogravimetric (TG), Differential Scanning Calorimetric (DSC) and Dynamo-mechanical Thermal (DMT) analyses showed that the desirable characteristics of the UV-cured acrylic resin are not substantially altered by the presence of the organic fillers. The release kinetics of polyphenols and flavonoids, determined in water for TP-containing membranes (ETx) and in ethanol/water mixture (7:3 v/v) for TGP-containing ones (EPx), was satisfactory, reaching a plateau after 24 h. Finally, preliminary antibacterial tests against S. Epidermidis were performed on the membranes with higher additive amount and gave positive results for ET-type; on the contrary, no inhibitory effect was observed for the tested EP-type membranes.

Áreas temáticas: Polymers and plastics Polymer science Odontología General chemistry Farmacia Engenharias ii Ciências biológicas ii Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 2073-4360

Direcció de correo del autor: bartosz.tylkowski@urv.cat magdalena.constanti@urv.cat marta.giamberini@urv.cat

Identificador del autor: 0000-0002-4163-0178 0000-0002-3547-4199 0000-0001-8278-3552

Fecha de alta del registro: 2023-02-19

Volumen de revista: 12

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://www.mdpi.com/2073-4360/12/2/358

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Polymers. 12 (2):

Referencia de l'ítem segons les normes APA: Rajczak E; Tylkowski B; Constantí M; Haponska M; Trusheva B; Malucelli G; Giamberini M (2020). Preparation and characterization of UV-curable acrylic membranes embedding natural antioxidants. Polymers, 12(2), -. DOI: 10.3390/polym12020358

DOI del artículo: 10.3390/polym12020358

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2020

Tipo de publicación: Journal Publications