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

Abstract

Ethyl cellulose (EC) was filled with bentonite (Bent) particles by mechanical dispersion to produce composite film materials that were studied using various methods. According to X-ray diffraction (XRD) analysis, the inter-chain separation length was larger in EC/Bent composite then those in pure polymer. Infrared spectrometry indicated a formation of hydrogen bonds between the hydroxyl groups of EC and the silanol groups of clay. Tests showed an increase in tensile strength of the polymer material (by 35–40%) when doped with bentonite. It was found that modification of polymer with bentonite resulted in increasing of the adsorption efficiency of methylene blue (MB): the equilibrium concentration of MB ions in adsorbent phase increased 2.5 times. The MB adsorption kinetics obeyed the pseudo-first-order mechanism. Isotherms were in good agreement with Langmuir model. For the composite, the maximum monolayer adsorption capacity was 4 times higher than that for pure polymer.

Simple, One-Pot Method for Preparing Transparent Ethyl Cellulose Films with Good Mechanical Properties

“…The tensile strength increased with the higher concentration of EC in the final film, but the highest tensile strength was achieved with the EC film dried at room temperature, which showed the lowest elasticity. This could be due to the EC molecules being closely packed together at higher concentrations [28]. The incorporation of TiO 2 nanoparticles did not affect the film's mechanical properties.…”

Quercetin in Drug Carriers: Polymer Composite, Physical Characteristics, and In vitro Study

“…The exceptional biocompatibility and biodegradability make ethyl cellulose a promising option for various applications in the food industry, packaging materials, cosmetics, as well as biomedical and pharmaceutical technologies. This hydrophobic polysaccharide has been widely used in biomedical and pharmaceutical industries for over 50 years, with excellent performance in adhesives, fillers, and films, making it valuable in cosmetics, food, and medicine for drug microencapsulation (Alekseeva et al, 2022) . Ethyl cellulose has resistance to light, heat, oxygen, moisture, and chemicals, facilitating compatibility with a wide range of plasticizers and resins.…”