Open AccessRheological properties of film solution from cassava starch and kaffir lime oil
Author(s) -
Norasmah Mohammed Manshor,
Junaidah Jai,
Fazlena Hamzah,
Agnat Somwangthanaroj,
W. T. ongdeesoontorn
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1349/1/012045
Subject(s) - rheology , viscoelasticity , biopolymer , dynamic modulus , materials science , dynamic mechanical analysis , starch , viscosity , rheometry , shear thinning , apparent viscosity , casting , composite material , chemistry , polymer , food science
Rheology of film solution is important to determine the final characteristics of biopolymer film as packaging material. In this study, the dynamic rheological properties of cassava starch-kaffir lime oil film solution were determined. The rheology measurement was made at frequency of 0.1 to 10 Hz and 1 % strain at 25 °C. The storage modulus (G’), loss modulus (G") and complex viscosity (η*) were determined to know the viscoelastic behavior of the film solution. The magnitude of G’ was greater than G" for all samples which indicated that the film solution was a gel-like; that is, the film solution behaves more like a solid where the deformations were elastic and recoverable. All samples show increasing trend of G’ and G" as the frequency increased. The complex viscosity decreased with increasing frequency which presented a shear thinning behavior of the film solution. The dynamic rheological properties of cassava starch-kaffir lime oil film solution was determined appropriately, thus the characterization of produced biopolymer film by casting can be correlated.