Physico-chemico-thermal assessment of H. sabdariffa-graft-copolymers

The reaction parameters for the graft copolymerization of Ethyl acrylate (EA) onto Hibiscus sabdariffa (Roselle) stem fiber were optimized and used to explore the additive effect of secondary monomer on percentage grafting, change in the properties, behavior of the fiber. The graft co-polymers were characterized by advanced techniques and evaluated for the changes. With increase in percentage grafting there was increase in physico-chemico-thermal resistance, hydrophobicity and miscibility in organic solvents but decrease in percentage crystallinity and crystallinity index. However, cellulose form I remained unchanged. These modified graft copolymer procured from renewable waste biomass can have numerous scientific and industrial applications.

Author(s): Ashish Chauhan and Balbir Kaith

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