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Functionalization of halloysite nanotubes for the preparation of carboxymethyl cellulose-based nanocomposite films
https://orcid.org/0000-0003-1787-5391
AbstractHalloysite nanotubes (Hal) were treated with acid to prepare uniformly charged acid treated Hal (Hal-A). After acid treatment, the surface charge (zeta potential) of Hal changed from +0.08mV to −32.65mV. Functionalized Hal-A were prepared through adsorbing metal ions by immersing the Hal-A into saturated solutions of three different metal salts, silver nitrate, zinc nitrate, and copper acetate. The number of metal ions attached to the Hal-A and their functionality were dependent on the type of metal ions. The functionalized Hal-A exhibited strong antimicrobial activity against food-borne pathogenic bacteria, L. monocytogenes and E. coli. The CMC-based film showed a significant increase in mechanical, water vapor barrier, and thermal stability properties after forming a composite with Hal. In particular, CMC-based films incorporated with the functionalized Hal-A showed strong antimicrobial activity against both L. monocytogenes and E. coli.
HighlightsUniformly charged halloysite nanotubes (aHNTs) were obtained by acid treatment of halloysite.Three types of functionalized aHNTs were prepared by adsorbing metal ions to the aHNTs.The functionalized aHNTs exhibited strong antimicrobial activity.Carboxymethyl cellulose/aHNTs composite films also showed strong antimicrobial activity.
Functionalization of halloysite nanotubes for the preparation of carboxymethyl cellulose-based nanocomposite films
https://orcid.org/0000-0003-1787-5391
AbstractHalloysite nanotubes (Hal) were treated with acid to prepare uniformly charged acid treated Hal (Hal-A). After acid treatment, the surface charge (zeta potential) of Hal changed from +0.08mV to −32.65mV. Functionalized Hal-A were prepared through adsorbing metal ions by immersing the Hal-A into saturated solutions of three different metal salts, silver nitrate, zinc nitrate, and copper acetate. The number of metal ions attached to the Hal-A and their functionality were dependent on the type of metal ions. The functionalized Hal-A exhibited strong antimicrobial activity against food-borne pathogenic bacteria, L. monocytogenes and E. coli. The CMC-based film showed a significant increase in mechanical, water vapor barrier, and thermal stability properties after forming a composite with Hal. In particular, CMC-based films incorporated with the functionalized Hal-A showed strong antimicrobial activity against both L. monocytogenes and E. coli.
HighlightsUniformly charged halloysite nanotubes (aHNTs) were obtained by acid treatment of halloysite.Three types of functionalized aHNTs were prepared by adsorbing metal ions to the aHNTs.The functionalized aHNTs exhibited strong antimicrobial activity.Carboxymethyl cellulose/aHNTs composite films also showed strong antimicrobial activity.
Functionalization of halloysite nanotubes for the preparation of carboxymethyl cellulose-based nanocomposite films
https://orcid.org/0000-0003-1787-5391
AbstractHalloysite nanotubes (Hal) were treated with acid to prepare uniformly charged acid treated Hal (Hal-A). After acid treatment, the surface charge (zeta potential) of Hal changed from +0.08mV to −32.65mV. Functionalized Hal-A were prepared through adsorbing metal ions by immersing the Hal-A into saturated solutions of three different metal salts, silver nitrate, zinc nitrate, and copper acetate. The number of metal ions attached to the Hal-A and their functionality were dependent on the type of metal ions. The functionalized Hal-A exhibited strong antimicrobial activity against food-borne pathogenic bacteria, L. monocytogenes and E. coli. The CMC-based film showed a significant increase in mechanical, water vapor barrier, and thermal stability properties after forming a composite with Hal. In particular, CMC-based films incorporated with the functionalized Hal-A showed strong antimicrobial activity against both L. monocytogenes and E. coli.
HighlightsUniformly charged halloysite nanotubes (aHNTs) were obtained by acid treatment of halloysite.Three types of functionalized aHNTs were prepared by adsorbing metal ions to the aHNTs.The functionalized aHNTs exhibited strong antimicrobial activity.Carboxymethyl cellulose/aHNTs composite films also showed strong antimicrobial activity.
Functionalization of halloysite nanotubes for the preparation of carboxymethyl cellulose-based nanocomposite films
Wang, Long-Feng (author) / Rhim, Jong-Whan (author)
Applied Clay Science ; 150 ; 138-146
2017-09-19
9 pages
Article (Journal)
Electronic Resource
English
Halloysite-carboxymethyl cellulose cryogel composite from natural sources
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