This work was supported by the Wuhan Science and Technology Bureau Key Scientific and Technological project (No. 201220822275 and No. 201160723222 ) and the Hubei Provincial Natural Science Foundation of China (No. 2012DBA02001 and No. 2011CDC114 ).
机构署名：
本校为第一且通讯机构
院系归属：
化学与环境工程学院
摘要：
Cellulose was isolated from rice straw by pretreatment with dilute alkaline and acid solutions successively, and it was further transferred into cellulose acetate in the presence of acetic anhydride and phosphotungstic acid (H 3PW12O40·6H2O). The removal of hemicellulose and lignin was affected by the concentration of KOH and the immersion time in acetic acid solution, and 83 wt.% content of cellulose in the treated rice straw was obtained after pretreatment with 4% KOH and immersion in acetic acid for 5 h. Phosphotungstic acid was found to be...
