Study on the Chemical Structural Characteristics of White Powdery Bamboo Lignin
Milled wood lignin was isolated from white powdery bamboo and characterized using alkaline nitrobenzene oxidation,elemental analysis,molecular weight analysis and UV,FTIR,1H-NMR spectroscopy.It was found that the bamboo lignin was of the syringyl(S)-guaiacyl(G)-p-hydroxyphenyl(H)type.There were 0.36 condensed G units per C9 unit in lignin.The proportion of three constitutive monomeric units of lignin(viz Ge:Gc:S:H)was 0.49:1.12:1:0.47.The C9formula for bamboo lignin was C9H9.80O3.44(OCH3)1.33.The bamboo milled wood iignin had Mw 11280,Mn 4551 and polydispersity(Mw/Mn)2.48.Furthermore,the bamboo lignin was composed mainly of β-O-4 ether bonds,together with a certain amount of β-β structure and conjugated ester linkages between the lignin structural units.
white powdery bamboo (Lingnania chungii McClure) milled wood lignin lignin structure
LIN BENPING WANG SHUANGFEI LIU YANLAN ZHAN HUAIYU WANG PING
College of Chemistry and Environmental Engineering,Changsha University of Science and Technology,Cha Institute of Pulp and Paper,Guangxi University,Nanning,Guangxi Zhuang Autonomous Region,530004,China State Key Lab of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Guangdong
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
194-198
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）