title: Synthesis and characterization of seaweed cellulose derived carboxymethyl cellulose.
abstract: In the present study, cellulose (SWC) extracted from green seaweed Ulva fasciata was processed to synthesize carboxymethyl cellulose (SWCMC). The seaweed cellulose (∼15% DW) was first processed for α cellulose extraction (10.1% on DW) followed by the synthesis and characterization of SWCMC. Thin films were prepared using commercial CMC (CCMC), SWCMC and SWCMC-metal nanoparticle (2% wt/v) by solvent evaporation technique. Films were studied for molecular weight, degree of carboxylation, viscosity and characterized by FT-IR and TGA. AFM surface morphology of SWCMC-metal nanoparticle film confirms the uniform distribution of sphere shaped metal nanoparticle on the film surface with the size in the range of 50-75nm. Further, SWCMC film showed antimicrobial activity when prepared with Ag and leaf extract of Azadirachta indica. The biodegradable nature of SWCMC film was confirmed by growing marine fungus Cladosporium spherospermum on CMC agar plates. Thus, SWCMC films exhibit potential applications in cosmetic, food, textiles, medical, agricultural and pharmaceutical industries.
authors.affiliation: RO Membrane Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India. Electronic address: slakshmi@csmcri.org.
authors.forename: Duraikkannu Shanthana
authors.initials: DS
authors.lastname: Lakshmi
authors.affiliation: Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.
authors.forename: Nitin
authors.initials: N
authors.lastname: Trivedi
authors.affiliation: Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi, India.
authors.forename: C R K
authors.initials: CRK
authors.lastname: Reddy
mesh_terms: D002266:Carboxymethylcellulose Sodium / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D012624:Seaweed / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014783:Viscosity
chemical_list: D002482:Cellulose; D002266:Carboxymethylcellulose Sodium
keywords: Antimicrobial; Carboxymethyl cellulose; Seaweed cellulose; Thin films