巯基聚乙烯醇纤维的制备及其吸附性能的研究  

Research on preparation and absorption properties of thiol-polyvinyl alcohol fibers

作　　者：张华[1] 逯阳[1] 

机构地区：[1]天津工业大学改性与功能纤维天津市重点实验室,天津300160

出　　处：《天津工业大学学报》2005年第6期1-4,共4页Journal of Tiangong University

基　　金：天津市高等学校科技发展基金资助项目(20041012)

摘　　要：以缩苯甲醛化及半碳化处理后的高强聚乙烯醇纤维为原料,利用它与巯基乙酸的酯化反应将-SH基团引入合成纤维骨架,制成一种新型的功能纤维——巯基聚乙烯醇螯合纤维。文中研究了这种纤维对Cu2+、 Zn2+、Pb2+金属离子的吸附性能,讨论了吸附酸度、吸附时间等因素对3种金属离子吸附性能的影响,得出了该纤维对上述金属离子的吸附量及选择性大小的顺序:Pb2+>Zn2+>Cu2+．实验表明本文制得的巯基聚乙烯醇纤维螯合容量较大,反应速率较快,尤其是机械强度高达4．0 cN／dtex,具有实用价值．A new functional thiol-polyvinyl alcohol fiber is prepared by using the high strength polyvinyl alcohol fiber acetalized and semi-carbonized as raw materials to react with thioglycolic acid to import-SH group into a synthetic fiber framework. The absorption properties of this fiber for Cu2^2＋ , Zn2^2＋ and Pb2^2＋ are studied. The influences of various pH values and adsorpting time on adsorption capacity are discussed. The selectivity sequence of the chelating fiber to mentioned metal ions is reached, which is Pb2^2＋ 〉 Zn2^2＋ 〉 Cu2^2＋. The experimental results show that the exchange capacity of this fiber is high, the reaction rate is fast, and the relatively high mechanical strength of this fiber is approximately 4.0 cN/dtex. So this fiber is suitable for many applications.

关 键 词：聚乙烯醇 巯基纤维 吸附性能 

分 类 号：TS102.528.3[轻工技术与工程—纺织工程] TQ342.86[轻工技术与工程—纺织科学与工程]