TY - JOUR
T1 - Biobased sustainable materials made from starch and plasma/ultrasound modified Agave fibers
T2 - Structural and water barrier performance
AU - Sifuentes-Nieves, Israel
AU - Yáñez Macías, Roberto
AU - Neira Velázquez, Guadalupe
AU - Velázquez, Gonzalo
AU - Garcia Hernandez, Zureima
AU - Gonzalez Morones, Pablo
AU - Hernández-Hernández, Ernesto
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/12/15
Y1 - 2021/12/15
N2 - This study aims to investigate the effect of green modification methods (ultrasound and plasma treatment) on a by-product of the tequila industry (Agave fibers), which can be useful as raw material to elaborate biodegradable and hydrophobic starch films. FTIR analysis indicated a decrease of hydrophilic lignocellulosic components, since the cavitation and etching effect of ultrasound/plasma treatment reduced the large number of hydroxyl groups of the fibers. The inclusion of ultrasound/plasma modified fibers in the starch matrix limited the starch-glycerol interactions, reducing the free volume of the starch and the binding sites for water. Therefore, the solubility (%S), swelling (%W) and water vapor permeance (WVPe) of the films decreased from 27 to 16%, 57 to 50% and 0.37 to 0.21 g/day m2Pa, respectively. Furthermore, the water contact angle (WCA) and relative crystallinity values increased. The results indicated that the treatments are suitable green technologies to obtain hydrophobic fillers useful to develop sustainable materials.
AB - This study aims to investigate the effect of green modification methods (ultrasound and plasma treatment) on a by-product of the tequila industry (Agave fibers), which can be useful as raw material to elaborate biodegradable and hydrophobic starch films. FTIR analysis indicated a decrease of hydrophilic lignocellulosic components, since the cavitation and etching effect of ultrasound/plasma treatment reduced the large number of hydroxyl groups of the fibers. The inclusion of ultrasound/plasma modified fibers in the starch matrix limited the starch-glycerol interactions, reducing the free volume of the starch and the binding sites for water. Therefore, the solubility (%S), swelling (%W) and water vapor permeance (WVPe) of the films decreased from 27 to 16%, 57 to 50% and 0.37 to 0.21 g/day m2Pa, respectively. Furthermore, the water contact angle (WCA) and relative crystallinity values increased. The results indicated that the treatments are suitable green technologies to obtain hydrophobic fillers useful to develop sustainable materials.
KW - Biofilms
KW - Hydrophobic fillers
KW - Natural fibers
UR - http://www.scopus.com/inward/record.url?scp=85119413235&partnerID=8YFLogxK
U2 - 10.1016/j.ijbiomac.2021.11.071
DO - 10.1016/j.ijbiomac.2021.11.071
M3 - Artículo
C2 - 34798189
AN - SCOPUS:85119413235
SN - 0141-8130
VL - 193
SP - 2374
EP - 2381
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
ER -