TY - JOUR
T1 - Nanocomposites from plasticized high-amylopectin, normal and high-amylose maize starches
AU - Mondragón, Margarita
AU - Mancilla, Juana E.
AU - Rodríguez-González, Francisco J.
PY - 2008/7
Y1 - 2008/7
N2 - 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
AB - 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
UR - http://www.scopus.com/inward/record.url?scp=47749137724&partnerID=8YFLogxK
U2 - 10.1002/pen.21084
DO - 10.1002/pen.21084
M3 - Artículo
SN - 0032-3888
VL - 48
SP - 1261
EP - 1267
JO - Polymer Engineering and Science
JF - Polymer Engineering and Science
IS - 7
ER -