Open AccessFilm production with flaxseed mucilage and polyvinyl alcohol mixtures and evaluation of their properties
Author(s) -
Pablo Henrique Eduardo Nazario de Paiva,
Luana Gabrielle Correa,
Ana Flávia Sampaio Paulo,
Geane Cristiane Balan,
Elza Iouko Ida,
Marianne Ayumi Shirai
Publication year - 2020
Publication title -
journal of food science and technology/journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.656
H-Index - 68
eISSN - 0975-8402
pISSN - 0022-1155
DOI - 10.1007/s13197-020-04806-7
Subject(s) - mucilage , fourier transform infrared spectroscopy , polyvinyl alcohol , thermogravimetric analysis , materials science , chemical engineering , distilled water , thermal stability , hydrolysis , ultimate tensile strength , scanning electron microscope , chemistry , composite material , chromatography , organic chemistry , botany , engineering , biology
Flaxseed mucilage was extracted with distilled water, dried and used for film production with polyvinyl alcohol (PVA) (ratio 1:1) of different hydrolysis degrees (88.0 and 98.3%). The properties of the films were evaluated by determining the thickness, tensile measurements, moisture content, water vapor permeability, apparent opacity, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) analysis and thermogravimetric analysis. Flaxseed mucilage, when mixed with PVA, produces less resistant, less rigid, more-flexible films, has a higher thermal stability, and does not change the water vapor barrier properties compared with pure mucilage films. SEM revealed that films with mucilage and PVA mixtures formed a compact and homogeneous structure, corroborating the FTIR spectra that indicated a chemical interaction between these two biopolymers. In general, the degree of PVA hydrolysis did not influence the properties of the films when mixed with flaxseed mucilage extract. Therefore, films obtained from mixtures of flaxseed mucilage and PVA can be an interesting and advantageous alternative for producing bio-based packaging.