TY - JOUR
T1 - Preparation of poly(lactide)/lignin/silver nanoparticles composite films with UV light barrier and antibacterial properties
AU - Shankar, Shiv
AU - Rhim, Jong Whan
AU - Won, Keehoon
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2018/2
Y1 - 2018/2
N2 - Organosolv lignin was used as a reducing agent for the preparation of silver nanoparticles (AgNPs) and their incorporation into poly(lactide) (PLA) polymer to prepare composite films. The composite films were characterized using UV–vis spectroscopy, FE-SEM, FTIR, XRD, and TGA. The optical, mechanical, water vapor barrier, and antibacterial properties of the composite films were evaluated. The UV–vis spectra of films exhibited two characteristics peaks around 300 and 450 nm attributed to lignin and AgNPs, respectively. XRD results indicated that the crystalline AgNPs had been formed. The transmission of light at 280 nm decreased significantly after incorporation of lignin and AgNPs. FTIR results showed that there was no change in the chemical structure of PLA after incorporation of lignin and AgNPs. The mechanical and water vapor barrier properties of the composite films increased after lignin and AgNPs incorporation, The films containing AgNPs exhibited potent antibacterial activity against Escherichia coli and Listeria monocytogenes.
AB - Organosolv lignin was used as a reducing agent for the preparation of silver nanoparticles (AgNPs) and their incorporation into poly(lactide) (PLA) polymer to prepare composite films. The composite films were characterized using UV–vis spectroscopy, FE-SEM, FTIR, XRD, and TGA. The optical, mechanical, water vapor barrier, and antibacterial properties of the composite films were evaluated. The UV–vis spectra of films exhibited two characteristics peaks around 300 and 450 nm attributed to lignin and AgNPs, respectively. XRD results indicated that the crystalline AgNPs had been formed. The transmission of light at 280 nm decreased significantly after incorporation of lignin and AgNPs. FTIR results showed that there was no change in the chemical structure of PLA after incorporation of lignin and AgNPs. The mechanical and water vapor barrier properties of the composite films increased after lignin and AgNPs incorporation, The films containing AgNPs exhibited potent antibacterial activity against Escherichia coli and Listeria monocytogenes.
KW - Antibacterial activity
KW - Composite film
KW - Organosolv lignin
KW - PLA
UR - http://www.scopus.com/inward/record.url?scp=85030781513&partnerID=8YFLogxK
U2 - 10.1016/j.ijbiomac.2017.10.038
DO - 10.1016/j.ijbiomac.2017.10.038
M3 - Article
C2 - 29017879
AN - SCOPUS:85030781513
SN - 0141-8130
VL - 107
SP - 1724
EP - 1731
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
ER -