A novel alkylpolyglucoside‐modified montmorillonite‐filled starch bionanocomposites produced by extrusion

Abstract

Native cassava starch was modified by dry heating treatment, and sodic montmorillonite was modified using an alkylpolyglucoside biosurfactant to produce a novel montmorillonite‐filled starch bionanocomposites with improved performance. The bionanocomposites were produced in two extrusion steps using a co‐rotating twin‐screw extruder. The structural properties of the bionanocomposites were studied by X‐ray diffraction. The reinforcement effect and material performance were evaluated by hydrophobicity, solubility, opacity, barrier, thermal and mechanical properties. In general, the dispersion of the nanofillers resulted in bionanocomposites with intercalated structures and improved properties compared with unfilled bioplastics. The main results exhibited that modified montmorillonite showed better compatibility with starch, improving nanofiller dispersion and interaction than the native one. As a result, it increased the hydrophobicity and reduced solubility, water, and oxygen permeabilities in comparison with bionanocomposites based on native starch by 36%, 48%, and 68%, respectively. Also, the tensile strength and Young modulus increased from 0.60 to 2.56 MPa and from 2.99 to 15.68 MPa, respectively. In conclusion, modification of MMT by the biosurfactant is a good approach to enhance dispersion/interaction with the starch matrix.

High performance casting film cassava starch/poly (vinyl alcohol)/clay nanocomposite films for banana preservation: Physical properties and application

“…It was great vital for outdoor. It can be explained by retrograded starch hydrogel admixture that tends to partially ll the pores and capillaries of clay composites, therefore making them smaller in size [23].…”

“…The highest elongation at break. The sodic montmorillonite was modi ed with alkyl polyglucoside biosurfactant [23] to produce a novel montmorillonite which was lled in the starch. The mechanical properties of the composite was improved by the addition of the clay due to improving nano ller dispersion and good interaction.…”

Maleated cassava starch/poly (vinyl alcohol)/clay nanocomposite films for banana preservation: Physical properties and application

“…It was great and vital for the outdoor. It can be explained by retrograded starch hydrogel admixture that tends to partially ll the pores and capillaries of clay composites, therefore making them smaller in size [24].…”

“…The highest elongation at break. The sodic montmorillonite was modi ed with alkyl polyglycolide biosurfactant [24] to produce a novel montmorillonite which was lled in the starch. The mechanical properties of the composite were improved by the addition of the clay due to improving nano ller dispersion and good interaction.…”