Synthesis of Carboxymethyl Cellulose Based on Pretreated Bamboo Shaving and Bagasse

Abstract

In this work, sodium carboxymethyl cellulose was prepared from compound of pretreated bamboo shaving and bagasse as raw materials, while the main reaction conditions affecting product properties such as viscosity and degree of substitution were studied. The results showed that the mass fraction ratio among these refined bamboo shaving and bagasse could be 60:40, the optimized reaction conditions were alkalified at 30 °C for 80 min and etherified at 55°C for 90 min. Afterwards, temperature was kept at 70 °C for 10 min. Under these conditions, viscosity of aqueous solution of 1 % carboxymethyl cellulose could always above 250 mPa·s, while most of the carboxymethyl cellulose samples reach 300 mPa s viscosity and DS ³ 0.8. The content of chloride and moisture were less than 1.2 % and 10 %, respectively.