Sodium carboxymethyl cellulose(CMC)is mainly prepared from cotton linter and wood pulp.The bamboo scraps is a kind of natural lignocellulosic material with rich cellulose content.In this paper,the manufacture process of CMC from pre-treated bamboo scraps was reported.Box-Behnken design and response surface methodology were implemented for optimizing the reaction conditions in the light of single factor experiments.The results proved that the optimal factors of carboxymethyl reaction were:pre-treated bamboo powder(contained 91.7% a-cellulose)was added into aqueous ethanol with sodium hydroxide solution,the alkalization kept at 33.6°C for 120min;subsequently,etherifying agent chloroacetic aicd was put into the system and etherification carried out at 54.6°C for 138min.After this preparation process,the product's viscosity of its 1% water solution was 233 mPa·s.
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