Extraction and functionalization of bagasse cellulose nanofibres to Schiff-base based antimicrobial membranes.
The work reported in this paper involves synthesis of a nanocellulose/chitosan composite and its further modification to antimicrobial films. Bagasse, an easily available biowaste, was used as source to extract nanocellulose fibres (CNFs) by subjecting it to mechanical and chemical treatments including alkaline steam explosion and high shear homogenization. The CNFs were subjected to periodate oxidation to obtain nanocellulose dialdehyde (CDA). The aldehyde groups of CDA were reacted with amino groups of chitosan to form Schiff-base. The resulting CDA/chitosan composite fibres were characterized at various steps. The fibres were then cast into films using cellulose acetate as a binder. The films have good physical strength. The composite films show excellent antimicrobial properties when tested against Staphylococcus aureus and Escherichia coli. Such antimicrobial films have potential applications in the formation of antimicrobial packaging material.
Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, India; Dr. SSB UICET, Panjab University, Chandigarh 160014, India.
Monica
M
Bansal
Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, India. Electronic address: ghanshyamschauhan@gmail.com.
Ghanshyam S
GS
Chauhan
Dr. SSB UICET, Panjab University, Chandigarh 160014, India.
Anupama
A
Kaushik
Department of Microbial Biotechnology, Panjab University, Chandigarh 160014, India.
Avantika
A
Sharma
D000447:Aldehydes / Q000737:chemistry; D000890:Anti-Infective Agents / Q000494:pharmacology*; D002482:Cellulose / Q000737:chemistry*; D004926:Escherichia coli / Q000187:drug effects; D008567:Membranes, Artificial; D008826:Microbial Sensitivity Tests; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure; D012545:Schiff Bases / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D013211:Staphylococcus aureus / Q000187:drug effects; D013718:Tensile Strength / Q000187:drug effects; D013997:Time Factors; D014961:X-Ray Diffraction
D000447:Aldehydes; D000890:Anti-Infective Agents; D008567:Membranes, Artificial; D012545:Schiff Bases; D002482:Cellulose; C027433:bagasse
Antimicrobial membranes; Bagasse; Cellulose nanofibres