木质素接枝改性影响因素的研究  

STUDIES ON THE EFFECTING FACTORS OF THE GRAFT REACTION OF LIGNIN MODIFICATION

作　　者：穆环珍[1] 郑涛[1] 黄衍初[1] 张春萍[1] 刘晨[1] 

机构地区：[1]中国科学院生态环境研究中心,北京100085

出　　处：《环境化学》2005年第4期443-445,共3页Environmental Chemistry

基　　金：国家高技术研究发展计划"863"项目(2002AA601022-4).

摘　　要：对碱法麦草制浆黑液酸法回收的木质素与丙烯酰胺接枝共聚反应进行了试验研究.结果表明,接枝共聚反应的适宜条件为:丙烯酰胺单体用量1.0mol·1-1,过硫酸钾引发剂浓度1.0×10-2mol·1-1,反应温度70℃,固液比1:50(W/W),反应时间4h.木质素与木质素接枝聚合物以及聚丙烯酰胺的红外光谱表明,木质素与丙烯酰胺之间发生了接枝共聚反应.Study on the effecting factors of the graft reaction of lignin from treating paper-pulping black liquor in acidification with acrylamide was accomplished. The results showed that the feasible conditions were 1.0 mol·1-1 of the acrylamide and 1.0×10 mol·1-1 of the initiating agent and 70℃ of the reaction temperature and 1:50 about the solid-liquor ratio (W/W) and the 4h on the reaction time. The infrared absorption spectrums of the lignin, the lignin copolymer with acrylamide and polyacrylamide confirmed that the graft reaction of the lignin with acrylamide was accomplished.

关 键 词：木质素 接枝改性 接枝共聚反应 引发剂浓度 聚丙烯酰胺 接枝聚合物 试验研究 制浆黑液 单体用量 适宜条件 过硫酸钾 反应温度 反应时间 红外光谱 固液比 回收 

分 类 号：X793[环境科学与工程—环境工程]