TY - JOUR
T1 - Rheological properties of nanocomposite-forming solutions and film based on montmorillonite and corn starch with different amylose content
AU - Romero-Bastida, Claudia A.
AU - Chávez Gutiérrez, Miguel
AU - Bello-Pérez, Luis A.
AU - Abarca-Ramírez, Estefania
AU - Velazquez, Gonzalo
AU - Mendez-Montealvo, Guadalupe
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/5/15
Y1 - 2018/5/15
N2 - Nanoparticles (montmorillonite, MMT) can enhance biopolymer-based film properties. The structure–property relationship between polymers and nanoparticles may be explained by the rheological tests of nanocomposite forming solutions (NFS). The aim of this work was to study the effect of MMT concentration and amylose content on the rheological properties of NFS based on corn starch and glycerol following two preparation methods, through steady shear and dynamic tests. The organization level of NFS was influenced by the addition order of the components. Decreasing in flow index behavior when increasing amylose content was attributed to interactions between the starch components. In all NFS, G′ was higher than G″ indicating a gel-like behavior and suggesting that the MMT reinforced the starch matrix as observed by the increase in the storage modulus of films with MMT. Films obtained from method 2 have better mechanical properties probably due to the starch-MMT interactions.
AB - Nanoparticles (montmorillonite, MMT) can enhance biopolymer-based film properties. The structure–property relationship between polymers and nanoparticles may be explained by the rheological tests of nanocomposite forming solutions (NFS). The aim of this work was to study the effect of MMT concentration and amylose content on the rheological properties of NFS based on corn starch and glycerol following two preparation methods, through steady shear and dynamic tests. The organization level of NFS was influenced by the addition order of the components. Decreasing in flow index behavior when increasing amylose content was attributed to interactions between the starch components. In all NFS, G′ was higher than G″ indicating a gel-like behavior and suggesting that the MMT reinforced the starch matrix as observed by the increase in the storage modulus of films with MMT. Films obtained from method 2 have better mechanical properties probably due to the starch-MMT interactions.
KW - Films
KW - Forming solutions
KW - Nanocomposites
KW - Rheology
KW - Starch
UR - http://www.scopus.com/inward/record.url?scp=85041453905&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2018.01.089
DO - 10.1016/j.carbpol.2018.01.089
M3 - Artículo
C2 - 29525147
SN - 0144-8617
VL - 188
SP - 121
EP - 127
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
ER -