Radiation grafting of 4-vinylpyridine and 2-hydroxyethyl methacrylate onto silicone rubber films, quaternization and antimicrobial properties
Por:
Gallegos, Juan, Cantu-Reyes, Margarita, Ortega, Alejandra, Magaña H., Perez, Xochitl, Garcia-Uriostegui, Lorena, Hurtado-Ayala, Lilia Angelica, Burillo, Guillermina
Publicada:
1 sep 2023
Ahead of Print:
1 may 2023
Categoría:
Radiation
Resumen:
A novel antibacterial system was synthesized by surface modification of
silicone rubber films SR with an antimicrobial quaternized
4-vinylpyridine (4VP) and one antibiofouling 2-hydroxyethylmethacrylate
(HEMA) by radiation grafting in two steps. The modification was carried
out by preirradiation oxidative grafting of HEMA, then direct 4VP
radiation grafting and further quaternization. The optimum grafting
conditions were obtained and quaternization with alkyl bromide of the
pyridine groups of the synthesized systems were realized to study the
antimicrobial properties. The modified films were characterized by FTIR
spectroscopy, swelling behavior, TGA, SEM and AFM. Studies on
antibacterial activity with Gram-positive S. aureus and Gram-negative E.
coli were determined; systems with quaternized 4VP presented more than
90% of inhibition for gram positive bacteria, and only one sample
(SR-g-4VP) reached 45% of inhibition for gram negative.
Filiaciones:
Gallegos, Juan:
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Av. Universidad 3000, D.F, Delegación Coyoacán, Mexico
Cantu-Reyes, Margarita:
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Av. Universidad 3000, D.F, Delegación Coyoacán, Mexico
Ortega, Alejandra:
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Av. Universidad 3000, D.F, Delegación Coyoacán, Mexico
Magaña H.:
Universidad Autónoma de Baja California, Mexico
Perez, Xochitl:
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Av. Universidad 3000, D.F, Delegación Coyoacán, Mexico
Garcia-Uriostegui, Lorena:
CONACyT - Departamento de Madera Celulosa y Papel, Universidad de Guadalajara, Carretera Guadalajara-Nogales Km. 15.5, Jalisco, Zapopan, 45110, Mexico
Hurtado-Ayala, Lilia Angelica:
Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Calzada Universidad 14418, Parque Industrial Internacional Tijuana, Tijuana, 22390, Mexico
Burillo, Guillermina:
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Av. Universidad 3000, D.F, Delegación Coyoacán, Mexico
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