Preparation and antibacterial activity of novel fluoroalkyl end-capped oligomers/silica nanocomposites-encapsulated low molecular biocides
| Autor: | Hiroshi Kakehi, Hideo Sawada, Masashi Koizumi, Masashi Miura, Yoshihiro Katoh |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Journal of Materials Science. 42:7147-7153 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/s10853-007-1549-2 |
| Popis: | Fluoroalkyl end-capped N-(1,1-dimethyl-3-oxobutyl)acrylamide oligomer [RF-(DOBAA) n -RF] reacted with tetraethoxysilane (TEOS) and silica nanoparticles in the presence of low-molecular weight biocides such as hibitane, hinokitiol, and hinokioil under alkaline conditions to afford RF-(DOBAA) n -RF/silica nanocomposites-encapsulated these biocides in excellent to moderate isolated yields. Fluoroalkyl end-capped N,N-dimethylacrylamide oligomer [RF-(DMAA) n -RF] and acrylic acid oligomer [RF-(ACA) n -RF]/silica nanocomposites-encapsulated hibitane were obtained under similar conditions. Dynamic light scattering measurements showed that the size of these fluorinated nanocomposites-encapsulated biocides thus obtained is nanometer size-controlled. Additionally, these fluorinated nanocomposites were shown to have a good dispersibility and stability in methanol and water. Of particular interest, these fluorinated nanocomposites-encapsulated biocides were found to have a good antibacterial activity against Staphylococcus aureus, and these nanocomposites were applied to the surface modification of traditional organic polymers such as poly(methyl methacrylate). |
| Databáze: | OpenAIRE |
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