TY - JOUR
T1 - Physical and morphological characterization of chitosan/montmorillonite films incorporated with ginger essential oil
AU - Souza, Victor Gomes Lauriano
AU - Pires, João Ricardo Afonso
AU - Rodrigues, Carolina
AU - Rodrigues, Patricia Freitas
AU - Lopes, Andréia
AU - Silva, Rui Jorge
AU - Caldeira, Jorge
AU - Duarte, Maria Paula
AU - Fernandes, Francisco Braz
AU - Coelhoso, Isabel Maria
AU - Fernando, Ana Luisa
N1 - Publisher Copyright:
© 2019 by the authors.
PY - 2019
Y1 - 2019
N2 - Novel bionanocomposite films of chitosan/montmorillonite (CS/MMT) activated with ginger essential oil (GEO) were produced and characterized in terms of their physical and morphological properties. The homogenization process led to a good interaction between the chitosan and the nanoparticles, however the exfoliation was diminished when GEO was incorporated. Film glass transition temperature did not statistically change with the incorporation of either MMT or GEO, however the value was slightly reduced, representing a relaxation in the polymer chain which corroborated with the mechanical and barrier properties results. Pristine chitosan films showed excellent barrier properties to oxygen with a permeability of 0.184 × 10-16 mol/m·s·Pa being reduced to half (0.098 × 10-16 mol/m·s·Pa) when MMT was incorporated. Although the incorporation of GEO increased the permeability values to 0.325 × 10-16 mol/m·s·Pa when 2% of GEO was integrated, this increment was smaller with both MMT and GEO (0.285 × 10-16 mol/m·s·Pa). Bionanocomposites also increased the UV light barrier. Thus, the produced bioplastics demonstrated their ability to retard oxidative processes due to their good barrier properties, corroborating previous results that have shown their potential in the preservation of foods with high unsaturated fat content.
AB - Novel bionanocomposite films of chitosan/montmorillonite (CS/MMT) activated with ginger essential oil (GEO) were produced and characterized in terms of their physical and morphological properties. The homogenization process led to a good interaction between the chitosan and the nanoparticles, however the exfoliation was diminished when GEO was incorporated. Film glass transition temperature did not statistically change with the incorporation of either MMT or GEO, however the value was slightly reduced, representing a relaxation in the polymer chain which corroborated with the mechanical and barrier properties results. Pristine chitosan films showed excellent barrier properties to oxygen with a permeability of 0.184 × 10-16 mol/m·s·Pa being reduced to half (0.098 × 10-16 mol/m·s·Pa) when MMT was incorporated. Although the incorporation of GEO increased the permeability values to 0.325 × 10-16 mol/m·s·Pa when 2% of GEO was integrated, this increment was smaller with both MMT and GEO (0.285 × 10-16 mol/m·s·Pa). Bionanocomposites also increased the UV light barrier. Thus, the produced bioplastics demonstrated their ability to retard oxidative processes due to their good barrier properties, corroborating previous results that have shown their potential in the preservation of foods with high unsaturated fat content.
KW - Biobased polymers
KW - Chitosan
KW - Nanotechnology
UR - http://www.scopus.com/inward/record.url?scp=85075566459&partnerID=8YFLogxK
U2 - 10.3390/coatings9110700
DO - 10.3390/coatings9110700
M3 - Article
AN - SCOPUS:85075566459
SN - 2079-6412
VL - 9
JO - Coatings
JF - Coatings
IS - 11
M1 - 700
ER -