Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 117, Issue -, Pages 333-339Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.indcrop.2018.03.004
Keywords
High amylose maize starch; Cationization; Nano-biocomposites; Nanostructure; Rheological properties
Categories
Funding
- National Natural Science Foundation of China [31371747]
- National Key Technology Support Program [2015BAD16B05]
- Great Innovation Program of Agricultural Application Technology in Shandong province
- Funds of Shandong Double Tops Program
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In the present study, cationized high amylose maize starches (CS) with different degrees of substitution (DS) were prepared. The physical properties and microstructures of CS/montmorillonite (Mt and D1821Mt) films were investigated. Morphological analysis showed stronger intercalations of CS with hydrophilic montmorillonite (Mt) than with hydrophobic montmorillonite (D1821Mt). For CS/Mt nanocomposite films, an increasing exfoliation trend was detected with the increase in DS. On the whole, the tensile strength of CS/Mt nano composite films decreased while water vapor permeability increased with an increase of DS. The CS/Mt film with the DS of 0.04 showed the highest tensile strength (14.01 MPa) and lowest water vapor permeability (1.80 x 10(-10) g m/m(2) s Pa). Rheological measurements confirmed that the intermolecular forces between CS and Mt decreased with increasing DS. Mt could obviously increase the thermal stability of the films. Overall, CS with lower DS had better compatibility with Mt, which helped improve the properties of CS/Mt nanocomposite films.
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