Effects of clay activation and amine chain length on silica–palygorskite heterostructure properties

Boudriche, Lilya; Bergaya, F.; Boudjemaa, Amel

doi:10.1180/clm.2023.6

Clay miner.

2023

DOI: 10.1180/clm.2023.6

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Effects of clay activation and amine chain length on silica–palygorskite heterostructure properties

Lilya Boudriche

F. Bergaya

Amel Boudjemaa

Abstract: This is a 'preproof' accepted article for Clay Minerals. This version may be subject to change during the production process.

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2023

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Characterization and drug release of benzalkonium chloride-loaded organo-palygorskite or organo-montmorillonite

Lobato-Aguilar,

Herrera-Kao,

Duarte-Aranda

et al. 2023

Clay miner.

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This study examined the incorporation of benzalkonium chloride into palygorskite and montmorillonite, assessing their potential as drug carriers. The aim was to evaluate the use of both clay minerals as viable options for antibacterial drug delivery. Various amounts (0.5, 1.0 and 2.0 times the cation-exchange capacity) of benzalkonium chloride were incorporated into both clay minerals, and the resulting materials were characterized using Fourier-transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction and elemental analysis using both CHNS-O elemental analysis and energy-dispersive X-ray spectroscopy. The Fourier-transform infrared spectroscopy and elemental analysis results indicate that benzalkonium chloride was incorporated successfully into the clay minerals. The X-ray diffraction traces of organo-montmorillonite indicate that the d-value increased as benzalkonium chloride content increased, confirming the intercalation of benzalkonium chloride within the montmorillonite interlayer space. By contrast, this behaviour was not observed for palygorskite. For the benzalkonium chloride-release studies, an initial burst release was found within the first 5 h, followed by a sustained release of benzalkonium chloride during the remaining testing time (24 h). Drug-release profiles were similar for modified palygorskite or montmorillonite during the testing time (24 h). Both clay minerals modified with benzalkonium chloride are promising materials for use as antibacterial fillers for several applications, including in the dental care industry.

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Characterization and drug release of benzalkonium chloride-loaded organo-palygorskite or organo-montmorillonite

Lobato-Aguilar,

Herrera-Kao,

Duarte-Aranda

et al. 2023

Clay miner.

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show abstract

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Effects of clay activation and amine chain length on silica–palygorskite heterostructure properties

Abstract: This is a 'preproof' accepted article for Clay Minerals. This version may be subject to change during the production process.

Cited by 1 publication

References 33 publications

Characterization and drug release of benzalkonium chloride-loaded organo-palygorskite or organo-montmorillonite

Characterization and drug release of benzalkonium chloride-loaded organo-palygorskite or organo-montmorillonite

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