| 旧报纸漆酶/介体脱墨过程中木素结构的研究 |
| |
| 引用本文： | 徐清华,秦梦华,傅英娟,石淑兰.旧报纸漆酶/介体脱墨过程中木素结构的研究[J].中国造纸学报,2006,21(2):26-30. |
| |
| 作者姓名： | 徐清华 秦梦华 傅英娟 石淑兰 |
| |
| 作者单位： | 1. 山东轻工业学院制浆造纸工程省级重点学科,山东,济南,250100
2. 天津科技大学环境与化学工程学院,天津,300222 |
| |
| 摘 要： | 利用元素分析、功能基分析和傅里叶变换红外光谱(FTIR)对旧报纸漆酶/介体脱墨过程中木素结构的变化进行分析,并利用凝胶渗透色谱(GPC)测定木素的分子质量及其分布。元素分析及功能基分析结果表明,漆酶/介体处理后,木素C9单元分子质量降低,木素的酚羟基和甲氧基含量降低,羰基和羧基含量升高。红外光谱分析结果显示,漆酶/介体处理过程中存在木素结构的部分破坏与溶出。GPC测定结果表明,漆酶/介体处理后浆料中木素的数均分子质量、重均分子质量及多分散性均下降,说明木素受到了一定程度的降解。
|
| 关 键 词： | 旧报纸 漆酶/介体 脱墨 木素 分析 |
| 文章编号： | 1000-6842（2006）02-0026-05 |
| 收稿时间： | 2005-12-30 |
| 修稿时间： | 2005-12-30 |
The Change of Lignin Structure in Old Newspaper Deinking with Laccase-Mediator System |
| |
| XU Qing-hua,QIN Meng-hua,FU Ying-jian,SHI Shu-lan.The Change of Lignin Structure in Old Newspaper Deinking with Laccase-Mediator System[J].Transactions of China Pulp and Paper,2006,21(2):26-30. |
| |
| Authors: | XU Qing-hua QIN Meng-hua FU Ying-jian SHI Shu-lan |
| |
| Abstract: | Dioxane lignin was extracted from control sample and laccase-mediator system(LMS) deinked pulp of old newspaper.Their structures were analyzed by elemental analysis,functional groups determination,FTIR.Comparing with the lignin from the control pulp,phenolic hydroxy and methoxyl content of the lignin from LMS deinked pulp decreased,while content of carboxyl and carbonyl groups increased.FTIR results showed that part of lignin was degraded and dissolved during the LMS treatment.Gel permeation chromatogram was used to investigate the change of lignin molar mass.Number average molecular weight,weight average molecular weight and polydispersity of lignin from LMS deinked pulp were lower than those of lignin from the control pulp,which indicated that lignin was somewhat degraded during the LMS deinking. |
| |
| Keywords: | old newspaper laccase-mediator system deinking lignin elemental analysis functional groups FTIR GPC |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
