Effect of the bentonite filler on structure and properties of composites based on hydroxyethyl cellulose

Abstract

Effect of the bentonite filler on structure and properties of composites based on hydroxyethyl cellulose, Arabian Journal of Chemistry (2015), doi: http://dx. AbstractGranulometric test and morphological analysis of the bentonite particles were performed using laser diffraction and low-temperature nitrogen adsorption-desorption techniques. Bentonite particles were immobilized into the hydroxyethyl cellulose matrix by mechanical dispersion, and composite films were obtained. The effect of concentration of the filling agent on structure and tensile properties of composites was revealed. Data on the nature of interaction between hydroxyethyl cellulose and bentonite after the modification of polymer was obtained by IR spectroscopy. It was found that the hydroxyethyl cellulose/bentonite composite films showed an antimicrobial effect against E. coli and Staph. aureus bacteria, as well against fungi association.

Structure, physicochemical properties, and adsorption performance of the ethyl cellulose/bentonite composite films

“…Grading and porosity of bentonite were studied by us previously using N 2 adsorption–desorption and laser diffraction techniques (Alekseeva et al 2019a ). It was found that the particle diameter of bentonite did not exceed 14 μm; the particle-size distribution was mono-modal with peak near 5.6 μm.…”

NiOx Nanoflower Modified Cotton Fabric for UV Filter and Gas Sensing Applications

“…23 The formation of Ni 2 O 3 H phase could be due to the role of oxidization agent as it partially hydrolyzed nickel oxide (NiO x ) for the catalytic process. 55 The diffraction peak at 2θ = 6.3°might be due to the inherent presence of montmorillonite (MMT) 56,57 in the cotton cellulose, and the same has been suppressed after the modification of cotton surface with NiO x . The major peak found at 22.2°with an increased intensity and decreased full width at half-maximum might be due to the increase in crystallite size with secondary wall cellulose.…”

Effect of the Organobentonite Filler on Structure and Properties of Composites Based on Hydroxyethyl Cellulose

“…In contrast, in films filled with 3 wt.% of organobentonite, good dispersion of filler particles in HEC matrix can be observed, but also agglomerates with varying size are noticed ( Figure 5(b)). Figure 6 shows the X-ray diffraction patterns of organobentonite and bentonite (reported previously [24]). The XRD pattern of bentonite (a) contains a wellpronounced reflection at 2 = 7 ∘ , which corresponds to a distance between aluminosilicate basal surfaces of 1.26 nm.…”

“…Previously in [24], we reported on researches the porous structure of bentonite. The results are shown in Figures 3(c) and 3(d).…”

“…The results are shown in Figures 3(c) and 3(d). Table 2 shows the following numerical parameters of porous structure determined for organobentonite powder, as well for bentonite [24]: is the total pore volume defined as the volume of liquid nitrogen corresponding to the amount adsorbed at a relative pressure of / 0 = 0.99.…”