abstract

• Starch-g-PCL films were prepared using the casting method and were characterized by different instrumental techniques and physicochemical properties. Nuclear magnetic resonance and Fourier transform infrared spectroscopy led to the proposal of a chemical structure for the films. The scanning electron microscopy (SEM) images of the films showed the formation of clusters of the graft copolymer starch-g-PCL. The effects of these clusters on the crystallinity (X-ray powder diffraction) revealed that the crystalline zones of the films increased by 46%25 and the elongation percentage increased by up to 50%25. Also, the chemical degradation (aqueous hydrolysis) and the soil degradation of these films were 1.9 and 2.6 times faster than the films of starch alone. However, the thermal degradation temperature of the films decreased by more than 15°C, the moisture content decreased to 6.5%25, and the water vapor permeation values increased in the films that contained starch-g-PCL. These results were accentuated with the increase in the amount of starch-g-PCL clusters. © 2017 WILEY-VCH Verlag GmbH %26 Co. KGaA, Weinheim

authors

• Aparicio-Saguilán A.
• Báez-García E.
• Conde-Acevedo C.
• González-García G.
• Hernández-Mendoza H.
• Mata-Mata J.L.
• Ramírez-Hernández A.

publication date

• 2018-01-01

funding provided via

• 188345, 204822, LAB-2009-01-123913  Grant

published in

• Starch/Staerke  Journal

keywords

• Banana starch; Clusters; Graft copolymers; PCL Crystallinity; Fourier transform infrared spectroscopy; Graft copolymers; Grafting (chemical); Nuclear magnetic resonance spectroscopy; Scanning electron microscopy; Starch; X ray powder diffraction; Banana starch; Chemical degradation; Clusters; Elongation percentage; Instrumental techniques; Scanning electron microscopy image; Thermal degradation temperatures; Water vapor permeation; Physicochemical properties

Digital Object Identifier (DOI)

• 10.1002/star.201700135

start page

end page

volume

• 70

issue

• 1-2