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Hydrogel wound dressing preparation at the laboratory scale by using electron beam and gamma radiation
| Content Provider | Semantic Scholar |
|---|---|
| Author | Raneque, Manuel Rapado Rodríguez, Alejandro Rodríguez Covas, Carlos Peniche |
| Copyright Year | 2013 |
| Abstract | The present work describes the preparation of hydrogel based on cross-linked networks of poly (N-vinylpirrolidone), PVP, with polyethyleneglicol and agar with 90% water and PVP nancomposites with a synthetic nanoclay, Laponite XLG, for use as burn dressings. These systems were obtained in two ways: using gamma Co-60 and electron beam radiation. The gelation obtained dose was Dg= 1.72 kGy. The elastic modulus of hydrogel was independent of the method of irradiation. It was 0.39 MPa for the hydrogel irradiated with gamma Co-60 and 0.38 MPa for electron beam irradiation. The elastic modulus of the nanocomposite membrane was 1.25 MPa, three times higher. These results indicate that the PVP/Laponite XLG nanocomposite hydrogel membrane is the best choice for wound dressing applications due to its high water sorption capacity and its superior mechanical properties.(AU) En el presente trabajo se describe la preparacion de hidrogeles basados en redes entrecruzadas de poli (N-vinilpirrolidona), PVP con polietilenglicol, agar y un 90% de agua, y nanocomposites de PVP con una nanoarcilla sintetica, la Laponita XLG para su empleo como aposito para quemaduras. Estos sistemas se obtuvieron por dos vias: radiacion gamma de Co-60 y haz de electrones. La dosis de gelificacion obtenida fue de Dg= 1.72 kGy. El modulo elastico de los hidrogeles resulto independiente del metodo de irradiacion, siendo igual a 0.39 MPa para el irradiado con Co-60 y 0.38 MPa para el irradiado con haz de electrones. El modulo elastico de la membrana de nanocomposite fue 3 veces superior, 1.25 MPa. Estos resultados muestran que los hidrogeles de nanocomposites de PVP/Laponita XLG resultan superiores para su aplicacion en el tratamiento de quemaduras, por su alta capacidad de sorcion de agua y sus mejores propiedades mecanicas.(AU) |
| Starting Page | 24 |
| Ending Page | 31 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://scielo.sld.cu/pdf/nuc/n53/nuc065313.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |