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| DOI | 10.1016/J.COLSURFA.2019.04.012 | ||||
| Año | 2019 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
This investigation aims to develop bacterial-resistant temperature-sensitive semi-IPN silver composite hydrogels via a three-step method. Primarily, the temperature-sensitive semi-IPN hydrogels of N-isopropylacrylamide and various concentrations of Pluronic F-127 (PF 127), have been prepared via a free radical polymerization technique. Furthermore, silver ions were encapsulated in the temperature-sensitive semi-IPN hydrogels via the swelling process. Finally, the bacterial-resistant semi-IPN silver composite hydrogels were developed by using an aqueous neem extract as a reducing agent. Semi-IPN hydrogels with higher amount of PF-127 showed a water uptake that was three times better than the pristine poly (N-isopropylacrylamide). The phase transition temperature of the semi-IPN silver composite hydrogels was found to be 34.24 degrees C, which was confirmed from the swelling and the DSC studies. The resulting hydrogels were characterized by: FTIR, UV-vis, X-ray diffraction, SEM and TEM analyses. The TEM results confirmed the fact that the nanoparticles formed were of spherical shape with a dimension of (similar to)8 +/- 2 nm. The semi-IPN silver-composite hydrogels showed excellent bacteria inhibition against gram-positive bacteria. The results demonstrated that the temperature-sensitive semi-IPN silver-composite hydrogels developed can be employed for clinical applications.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Jayaramudu, Tippabattini | - |
Universidad de Talca - Chile
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| 2 | Varaprasad, Kokkarachedu | - |
Centro de Investigacion de Polimeros Avanzados - Chile
CIPA - Chile |
| 3 | Sadiku, Rotimi | Hombre |
Tshwane Univ Technol - República de Sudáfrica
Tshwane University of Technology - República de Sudáfrica |
| 4 | Amalraj, John | Hombre |
Universidad de Talca - Chile
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| Fuente |
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| FONDECYT |
| Fondo Nacional de Desarrollo Científico y Tecnológico |
| Universidad de Talca |
| Fondo Nacional de Desarrollo CientÃfico y Tecnológico |
| FONDECYT Postdoctoral Project |
| CIPA, CONICYT Regional, GORE BIO-BIO |
| Universidad de Talca, Talca, Chile |
| Agradecimiento |
|---|
| The author, Tippabattini Jayaramudu wishes to acknowledge the Fondecyt Postdoctoral Project No 3170272 and Universidad de Talca, 747, Talca, Chile. The authors acknowledge PIEI-QUIMBIO, and Proyecto de Investigacion enlace FONDECYT (No 300061) Universidad de Talca. KVP wishes to acknowledge Fondecyt 11160073 & CIPA, CONICYT Regional, GORE BIO-BIO, R17A10003. |
| The author, Tippabattini Jayaramudu wishes to acknowledge the Fondecyt Postdoctoral Project No 3170272 and Universidad de Talca, 747, Talca, Chile. The authors acknowledge PIEI-QUIMBIO, and Proyecto de Investigacion enlace FONDECYT (N° 300061) Universidad de Talca. KVP wishes to acknowledge Fondecyt 11160073 & CIPA, CONICYT Regional, GORE BIO-BIO, R17A10003. |