Synthesis and characterization of seaweed cellulose derived carboxymethyl cellulose. (10th February 2017)

• Record Type: Journal Article
• Authors: Lakshmi, Duraikkannu Shanthana; Trivedi, Nitin; Reddy, C.R.K.
• Is Part Of: Carbohydrate polymers. Volume 157(2017)
• Page Start: 1604
• Page End: 1610
• Publication Date: 2017-02-10
• Subjects: Seaweed cellulose -- Carboxymethyl cellulose -- Thin films -- Antimicrobial; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2016.11.042
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: First report on green seaweed cellulose derived carboxymethyl cellulose. Seaweed CMC films are biodegradable in nature. Seaweed derived biochemical reduces the dependency on terrestrial biomass. 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 50–75 nm. 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.