Nanocomposites from plasticized high-amylopectin, normal and high-amylose maize starches

Three types of maize starch with different amounts of amylose and amylopectin were used to prepare plasticized starch/clay nanocomposite films by casting. Studies by X‐ray diffraction (XRD) and transmission electron microscopy (TEM) indicated that the intercalation/exfoliation of the plasticized sta...

Full description

Saved in:
Bibliographic Details
Published in:Polymer engineering and science 2008-07, Vol.48 (7), p.1261-1267
Main Authors: Mondragón, Margarita, Mancilla, Juana E., Rodríguez-González, Francisco J.
Format: Article
Language:English
Subjects:
Applied sciences
Carbohydrates
Casting
Chemical properties
Composites
Corn products
Diffraction
Electron microscopy
Exact sciences and technology
Forms of application and semi-finished materials
Methods
Nanotechnology
Polymer films
Polymer industry, paints, wood
Polymeric composites
Starch
Technology of polymers
Transmission electron microscopy
X-rays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Three types of maize starch with different amounts of amylose and amylopectin were used to prepare plasticized starch/clay nanocomposite films by casting. Studies by X‐ray diffraction (XRD) and transmission electron microscopy (TEM) indicated that the intercalation/exfoliation of the plasticized starch molecules took place into the clay galleries for the three types of starch. However, the plasticized waxy starch molecules were the easiest of them all to be intercalated/exfoliated, which was reflected in the highest increment of the stress at peak of these nanocomposites. Moreover, the lowest water uptake was showed by the plasticized high‐amylose starch/clay nanocomposites. It was concluded that varying contents of amylose and amylopectin influenced the formation of intercalated/exfoliated clay structures and also affected the interactions of clay with water. POLYM. ENG. SCI., 2008. © 2008 Society of Plastics Engineers
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.21084