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Determination of optical properties of a corn starch biofilm
Author(s) -
MenchacaRivera J. Alejandro,
GonzalezReyna M. A.,
AvilésArellano Luz Ma.,
FernándezLoyola Rodrigo,
MoralesSánchez Eduardo,
Pérez Robles J. Francisco
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47111
Subject(s) - crystallinity , starch , materials science , scanning electron microscope , casting , polyethylene , corn starch , raw material , composite material , chemical engineering , aqueous solution , solvent , absorption (acoustics) , chemistry , organic chemistry , engineering
In this work, the optical properties of a corn starch‐based film were correlated with its structural properties. Scanning electron microscopy was performed to determine if incorporation of starch into the matrix gives a homogenous and smooth surface. X‐ray diffraction was performed to identify the relative degree of crystallinity. The optical properties of the film in the range 300 to 2500 nm were studied, showing diffuse total transmissivity and total absorption coefficients comparable with that of low‐density polyethylene films. The process used in this research is carried out in an aqueous solvent, without using any toxic raw material, and prepared by casting. The process allows for the use of different additives. This processing of the starch film represents a great advantage also because it takes a maximum of 10 h, four times less than other processes, and no special equipment is needed. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47111.