文献类型：期刊文献

中文题名：改性木质素磺酸盐单体的制备及聚合活性

英文题名：Preparation and Polymerization of Modified Lignosulfonate Monomers

作者：张永贺[1] 金立维[1]

第一作者：张永贺

机构：[1]中国林业科学研究院林产化学工业研究所,南京210042

年份：2020

卷号：48

期号：8

起止页码：129-132

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：重点研发计划国合专项资助项目(2017YFE0106800)。

语种：中文

中文关键词：木质素磺酸钙;丙烯酰氯;十一烯酰氯;聚合活性

外文关键词：Calcium lignosulfonate;Acryloyl chloride;Undecylenyl chloride;Polymerization activity

分类号：TQ351

摘要：以丙烯酰氯(AC)、十一烯酰氯(UC)对木质素磺酸钙(LS)改性,分别制备了木质素磺酸钙丙烯酸酯(AC-LS)、木质素磺酸钙十一烯酸酯(UC-LS)单体。通过FTIR、1H NMR、UV测试对AC-LS、UC-LS的结构进行了分析。结果表明:AC-LS、UC-LS红外谱图中均出现新的酯基吸收峰,在核磁共振谱图均出现新的乙烯基质子峰(—CH CH 2);在紫外吸收谱图中,两单体最大吸收波长出现红移、吸收强度增强,表明AC-LS、UC-LS单体成功制备。通过DSC、GPC测试对AC-LS、UC-LS的聚合活性进行了分析,DSC结果显示在引发剂存在条件下,AC-LS、UC-LS可以发生均聚反应。AC-LS重均相对分子质量(M w)=30041,数均相对分子质量(M n)=13592,相对分子质量量分布系数(M w/M n)=2.21;UC-LS的M w=17118,M n=1896,M w/M n=2.17,表明AC-LS、UC-LS单体成功制备,并具有一定的聚合活性。
Calcium lignosulfonate (LS) was modified by acryloyl chloride (AC) and undecylenyl chloride (UC) to prepare calcium lignosulfonate monomers AC-LS and UC-LS. The structure and polymerization activity of AC-LS and UC-LS were analyzed by FTIR, 1H NMR, UV, DSC, and GPC test. The results showed that new ester-based absorption peaks appeared in the infrared spectra of AC-LS and UC-LS;new vinyl proton peaks (—CH CH 2) appeared in the NMR spectra;in the ultraviolet absorption spectrum, the maximum absorption wavelength of the two monomers showed red shift and the absorption intensity increased. In summary, AC-LS and UC-LS monomers were successfully prepared. The DSC results showed that AC-LS and UC-LS could be polymerized in the presence of an initiator. The homopolymer relative molecular mass results: AC-LS: M w =30 041, M n=13 592, M w/ M n=2.21;UC-LS: M w=17 118, M n=1 896, and M w/ M n=2.17, indicated that AC-LS and UC-LS were successfully prepared and had a polymerization activity.