TY - JOUR
T1 - A green method for in situ synthesis of poly(vinyl alcohol)/chitosan hydrogel thin films with entrapped silver nanoparticles
AU - Nguyen, Ngoc Thang
AU - Liu, Jui Hsiang
N1 - Funding Information:
The authors would like to thank the National Science Council (NSC) of the Republic of China (Taiwan) for financially supporting this research under Contract no. 101-2221-E-006-074-MY3 . This research received funding from the Headquarters of University Advancement at the National Cheng Kung University , which is sponsored by the Ministry of Education, Taiwan, ROC.
Publisher Copyright:
© 2014 Taiwan Institute of Chemical Engineers.
PY - 2014
Y1 - 2014
N2 - Poly(vinyl alcohol)/Chitosan (PVA/CTS) hydrogel thin films of approximately 4. μm in thickness were synthesized via ultraviolet (UV) irradiation using acrylic acid (AA) monomer as the crosslinker, without the aid of an additional photoinitiator. The prepared hydrogels with a high crosslinking density and a dense inter-porous structure were utilized both as nanoreactors and the immobilizing matrix for the formation of silver nanoparticles (AgNPs). The nanoparticles were formed through in situ reduction of silver nitrate by employing the nontoxic biochemical glucose and the accelerator sodium hydroxide in the environmentally benign medium of water. The composite films were characterized using several analysis tools, including UV-visible spectroscopy (UV/vis), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and mechanical testing. The results confirmed that highly stable and uniformly distributed AgNPs were obtained over the entire hydrogel networks. The tensile test revealed that the effective incorporation of AgNPs within the hydrogel networks rendered the composite films more elastic. Because of its inter-porous structure, well distributed AgNPs, and good mechanical and biocompatible properties, as well as the green synthesis method, the AgNP-loaded PVA/CTS hydrogel thin film could be utilized as a biomaterial in medical applications.
AB - Poly(vinyl alcohol)/Chitosan (PVA/CTS) hydrogel thin films of approximately 4. μm in thickness were synthesized via ultraviolet (UV) irradiation using acrylic acid (AA) monomer as the crosslinker, without the aid of an additional photoinitiator. The prepared hydrogels with a high crosslinking density and a dense inter-porous structure were utilized both as nanoreactors and the immobilizing matrix for the formation of silver nanoparticles (AgNPs). The nanoparticles were formed through in situ reduction of silver nitrate by employing the nontoxic biochemical glucose and the accelerator sodium hydroxide in the environmentally benign medium of water. The composite films were characterized using several analysis tools, including UV-visible spectroscopy (UV/vis), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and mechanical testing. The results confirmed that highly stable and uniformly distributed AgNPs were obtained over the entire hydrogel networks. The tensile test revealed that the effective incorporation of AgNPs within the hydrogel networks rendered the composite films more elastic. Because of its inter-porous structure, well distributed AgNPs, and good mechanical and biocompatible properties, as well as the green synthesis method, the AgNP-loaded PVA/CTS hydrogel thin film could be utilized as a biomaterial in medical applications.
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U2 - 10.1016/j.jtice.2014.06.017
DO - 10.1016/j.jtice.2014.06.017
M3 - Article
AN - SCOPUS:84922451315
VL - 45
SP - 2827
EP - 2833
JO - Journal of the Taiwan Institute of Chemical Engineers
JF - Journal of the Taiwan Institute of Chemical Engineers
SN - 1876-1070
IS - 5
ER -