[article] in Industrial & engineering chemistry research > Vol. 51 N° 14 (Avril 2012) . - pp. 5148–5156 | Titre : | Preparation and characterization of N - halamine - based antimicrobial fillers | | Type de document : | texte imprimé | | Auteurs : | Revathi V. Padmanabhuni, Auteur ; Jie Luo, Auteur ; Zhengbing Cao, Auteur | | Année de publication : | 2012 | | Article en page(s) : | pp. 5148–5156 | | Note générale : | Chimie industrielle | | Langues : | Anglais (eng) | | Mots-clés : | Polymer Composites antimicrobial | | Résumé : | The purpose of this study was to demonstrate that the surface of CaCO3 fillers can be coated with an N-halamine-based fatty acid to make the filler surface organophilic and simultaneously achieve antibacterial activity, rendering the resulting polymer–filler composites antimicrobial. Thus, a new bifunctional compound, 4,4-dimethylhydantoin undecanoic acid (DMH-UA), was synthesized by treating the potassium salt of dimethylhydantoin (DMH) with 11-bromoundecanoic acid (BUA). Upon chlorination treatment with dilute bleach, DMH-UA was transformed into 3-chloro-4,4-dimethylhydantoin undecanoic acid (Cl-DMH-UA). Alternatively, DMH-UA could be coated onto the surface of CaCO3 to obtain the corresponding calcium salt, 4,4-dimethylhydantoin undecanoic acid calcium carbonate (DMH-UA-CaCO3). In the presence of dilute chlorine bleach, the DMH-UA coated on the surface of CaCO3 was transformed into Cl-DMH-UA, leading to the formation of Cl-DMH-UA-CaCO3. The reactions were characterized by FT-IR, NMR, UV, DSC, and SEM analyses. Both Cl-DMH-UA and Cl-DMH-UA-CaCO3 were used as antimicrobial additives for cellulose acetate (CA). The antimicrobial efficacy of the resulting samples was evaluated against both Escherichia coli (Gram-negative bacteria) and Staphylococcus aureus (Gram-positive bacteria). It was found that, for the same additive content, CA samples with Cl-DMH-UA-CaCO3 and Cl-DMH-UA had very similar antimicrobial and biofilm-controlling activities, but the former released less active chlorine into the surrounding environment than the latter. | | ISSN : | 0888-5885 | | En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie300212x |
[article] Preparation and characterization of N - halamine - based antimicrobial fillers [texte imprimé] / Revathi V. Padmanabhuni, Auteur ; Jie Luo, Auteur ; Zhengbing Cao, Auteur . - 2012 . - pp. 5148–5156. Chimie industrielle Langues : Anglais ( eng) in Industrial & engineering chemistry research > Vol. 51 N° 14 (Avril 2012) . - pp. 5148–5156 | Mots-clés : | Polymer Composites antimicrobial | | Résumé : | The purpose of this study was to demonstrate that the surface of CaCO3 fillers can be coated with an N-halamine-based fatty acid to make the filler surface organophilic and simultaneously achieve antibacterial activity, rendering the resulting polymer–filler composites antimicrobial. Thus, a new bifunctional compound, 4,4-dimethylhydantoin undecanoic acid (DMH-UA), was synthesized by treating the potassium salt of dimethylhydantoin (DMH) with 11-bromoundecanoic acid (BUA). Upon chlorination treatment with dilute bleach, DMH-UA was transformed into 3-chloro-4,4-dimethylhydantoin undecanoic acid (Cl-DMH-UA). Alternatively, DMH-UA could be coated onto the surface of CaCO3 to obtain the corresponding calcium salt, 4,4-dimethylhydantoin undecanoic acid calcium carbonate (DMH-UA-CaCO3). In the presence of dilute chlorine bleach, the DMH-UA coated on the surface of CaCO3 was transformed into Cl-DMH-UA, leading to the formation of Cl-DMH-UA-CaCO3. The reactions were characterized by FT-IR, NMR, UV, DSC, and SEM analyses. Both Cl-DMH-UA and Cl-DMH-UA-CaCO3 were used as antimicrobial additives for cellulose acetate (CA). The antimicrobial efficacy of the resulting samples was evaluated against both Escherichia coli (Gram-negative bacteria) and Staphylococcus aureus (Gram-positive bacteria). It was found that, for the same additive content, CA samples with Cl-DMH-UA-CaCO3 and Cl-DMH-UA had very similar antimicrobial and biofilm-controlling activities, but the former released less active chlorine into the surrounding environment than the latter. | | ISSN : | 0888-5885 | | En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie300212x |
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Affiner la rechercheAcyclic N-halamine coated Kevlar fabric materials / Jie Luo in Industrial & engineering chemistry research, Vol. 47 n°15 (Août 2008)
