Effects of ultrasound time on the properties of methylcellulose-montmorillonite films
Abstract
Abstract
Methylcellulose-montmorillonite films were prepared via solvent casting method. The effects of different ultrasound times (0, 15, 30, 45, 60, and 75 min) on the properties of methylcellulose-montmorillonite films were evaluated. Fourier transform infrared and X-ray diffraction were applied to investigate and prove the effects of ultrasound time. The films were characterized by mechanical properties, opacity, water vapor permeability, yellowness index, and color. Ultrasound time significantly affected the characteristics of the films, except for elongation. Maximum tensile strength, opacity,
YI
, and
b*
as well as minimum
L*
and water vapor permeability were related to 60 min. The results from X-ray diffraction and Fourier transform infrared verified the effects of sonication time on the films properties, especially for 60 min. The Fourier transform infrared spectrum related to 60 min had more new and sharper peaks. The maximum compactness and strength of methylcellulose-montmorillonite films and the highest X-ray diffraction peak were also attributed to 60 min. Using ultrasound radiation for the production of such films is strongly recommended. To obtain the best quality and reach the required properties, considering the aim of the films, optimization of sonication time is mandatory.
Keywords
- Ultrasound time,
- Methyl cellulose,
- Film,
- Montmorillonite,
- Fourier transform infrared,
- X-ray diffraction
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