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Journal of Nanoparticle Research

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01.02.2011 | Research Paper

Films made of cellulose nanofibrils: surface modification by adsorption of a cationic surfactant and characterization by computer-assisted electron microscopy

verfasst von: K. Syverud, K. Xhanari, G. Chinga-Carrasco, Y. Yu, P. Stenius

Erschienen in: Journal of Nanoparticle Research | Ausgabe 2/2011

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Abstract

Films made of nanofibrils were modified by adsorption of a cationic surfactant directly on the film surfaces. The nanofibrils were prepared by 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO)-mediated oxidation and mechanical fibrillation, and were relatively homogeneous in size. The average nanofibril diameter and surface porosity was quantified based on computer-assisted field-emission scanning electron microscopy (FE-SEM). The cationic surfactant used in the adsorption was n-hexadecyl trimethylammonium bromide (cetyltrimethylammonium bromide, CTAB). The adsorption of CTAB was confirmed by Fourier transform infrared (FTIR) spectroscopy and high-resolution transmission electron microscopy (HRTEM) analyses. It was shown that the adsorbed layer of CTAB increased the hydrophobicity, without affecting the tensile index significantly. This capability, combined with the antiseptic properties of CTAB, may be a major advantage for several applications.

Vorheriger Artikel Superspin-glass like behavior of nanoparticle La0.7Ca0.3MnO3 obtained by mechanochemical milling

Nächster Artikel Characterization of crystalline silica nanorods synthesized via a solvothermal route using polyvinylbutyral as a template

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Titel: Films made of cellulose nanofibrils: surface modification by adsorption of a cationic surfactant and characterization by computer-assisted electron microscopy
verfasst von: K. Syverud
K. Xhanari
G. Chinga-Carrasco
Y. Yu
P. Stenius
Publikationsdatum: 01.02.2011
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 2/2011
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-010-0077-1

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