Modification of Cellulose in Ionic Liquid with NBS as a Catalyst
The chemical modification of cellulose with succinic anhydride(SA)was investigated in C4mimC1/DMSO system using N-bromosuccinimide(NBS)as a catalyst.The degree of substitution(DS)of all products analyzed by titration method was in the range of 0.24 to 2.31,and noticeably increased compared with the products without any catalysts,indicating that NBS was the novel efficient catalyst of succinoylation in ionic liquid.The physochemical structure of products was characterized by FT-IR and solid-state CP/MAS 13C-NMR spectroscopies,which provided the evidence of succinoylation reaction.The results also indicated that the reaction at C-6,C-2 and C-3 positions of the cellulose occurred.The thermal stability of the succinylated cellulose was found to decrease upon chemical modification.
cellulose ionic liquids succinic anhydride modification
LIU CHUAN-FU ZHANG AI-PING LI WEI-YING SUN RUN-CANG
State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Ch State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Ch State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Ch
国际会议
第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)
天津
英文
250-254
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）