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Carboxymethyl cellulose from rice stubble waste
Rice stubble is an agricultural waste with 30.67% yield of cellulose (90.05% α-cellulose content) to be synthesized as carboxymethyl cellulose (CMC). Hemicellulose and lignin were first removed and later rice stubble cellulose was swollen in 30% NaOH and isopropanol as a solvent. Synthesis conditions such as chloroacetic acid content (5-7 g in 5 g of alkali cellulose), reaction temperature (50 and 70 C) and time (180, 270 and 360 min) were investigated to obtain CMC from rice stubble (CMCr).doi:10.14456/sjst-psu.2020.59 fatcat:sldfsvyo4rfhdcd7xety7ladsu