TY - JOUR
T1 - Utilization of flax (Linum usitatissimum) cellulose nanocrystals as reinforcing material for chitosan films
AU - Mujtaba, Muhammad
AU - Salaberria, Asier M.
AU - Andres, María A.
AU - Kaya, Murat
AU - Gunyakti, Ayse
AU - Labidi, Jalel
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/11
Y1 - 2017/11
N2 - Use of plastic based packaging tools is causing both health and economic problems. To overcome this situation, researchers are focusing on the use of different biomaterials such as chitosan and cellulose. The current study was conducted to check the effect of flax (Linum usitatissimum) cellulose nanocrystals (CNC) on mechanical and barrier properties of chitosan-based films. CNC was incorporated in different concentrations (5, 10, 20 and 30%). CNC was isolated from flax fiber using acid hydrolysis method. Tensile strength (TS) and young modulus (YM) values increased with the increase of CNC concentration. Chitosan film with 20% CNC revealed the highest YM value as 52.35 MPa. No significant improvement was recorded in water vapor permeability due to overall lower film crystallinity. All the films were observed to be transparent up to an acceptable level. SEM and AFM analysis confirmed the homogeneity of films. A gradual enhancement was recorded in the antimicrobial activity of chitosan/CNC composite films. No significant improvement revealed in the thermal stability of composites.
AB - Use of plastic based packaging tools is causing both health and economic problems. To overcome this situation, researchers are focusing on the use of different biomaterials such as chitosan and cellulose. The current study was conducted to check the effect of flax (Linum usitatissimum) cellulose nanocrystals (CNC) on mechanical and barrier properties of chitosan-based films. CNC was incorporated in different concentrations (5, 10, 20 and 30%). CNC was isolated from flax fiber using acid hydrolysis method. Tensile strength (TS) and young modulus (YM) values increased with the increase of CNC concentration. Chitosan film with 20% CNC revealed the highest YM value as 52.35 MPa. No significant improvement was recorded in water vapor permeability due to overall lower film crystallinity. All the films were observed to be transparent up to an acceptable level. SEM and AFM analysis confirmed the homogeneity of films. A gradual enhancement was recorded in the antimicrobial activity of chitosan/CNC composite films. No significant improvement revealed in the thermal stability of composites.
KW - Biocomposites
KW - Cellulose nanocrystals
KW - Chitosan films
KW - Mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=85021806389&partnerID=8YFLogxK
U2 - 10.1016/j.ijbiomac.2017.06.127
DO - 10.1016/j.ijbiomac.2017.06.127
M3 - Article
C2 - 28684354
AN - SCOPUS:85021806389
SN - 0141-8130
VL - 104
SP - 944
EP - 952
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
IS - Pt A
ER -