4.7 Article

Synthesis and characterization of seaweed cellulose derived carboxymethyl cellulose

期刊

CARBOHYDRATE POLYMERS
卷 157, 期 -, 页码 1604-1610

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ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.11.042

关键词

Seaweed cellulose; Carboxymethyl cellulose; Thin films; Antimicrobial

资金

  1. Council of Scientific and Industrial Research (CSIR), New Delhi

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In the present study, cellulose (SWC) extracted from green seaweed Ulva fasciata was processed to synthesize carboxymethyl cellulose (SWCMC). The seaweed cellulose (similar to 15% DW) was first processed for a 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. (C) 2016 Elsevier Ltd. All rights reserved.

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