摘要
以 2 苯氧基乙醇为起始剂 ,用先聚合后功能基化和钠离子模板的方法 ,合成了一种新型酚醛型聚合物双氮杂假冠醚PACE .应用FTIR光谱跟踪监控的方法研究了一系列合成反应 .获得了以苯氧乙醇为单体的酚醛交联反应的最佳实验配方和在该酚醛母体聚合物上进行的一系列取代反应的较佳实验条件 ,同时给出了一系列聚合物的红外光谱资料 .测试了PACE对常见金属离子的静态吸附性能 ,结果表明 ,PACE对K+ ,Na+ ,Hg2 + ,Cd2 + ,Fe3 + ,Pb2 + 和Cu2 + 离子具有良好的吸附性能 .其吸附容量分别达 1 43,0 98,1 84,0 6 8,0 79,0 6 1和 0 5 7mmol g r.通过FTIR光谱对吸附机理做了初步探讨 .结果表明 ,在聚合物PACE的金属离子配合物中 ,不仅CH2 OCH2 ,PhOCH2 和CH2 NCH2 参与了配位 ,同时CH2 OH亦不同程度地参与了配位 .PACE对Hg2 + 的吸附过程中伴随着缓慢的氧化还原现象 ,在此过程中 ,PACE中的CH2 OH被氧化成为COOH ,而Hg2 + 被还原为Hg22 + .
Using 2-phenoxyethanol as initial material, a novel phenolic type polymeric bisazacrown pseudo ether PACE were synthesized by methods of first polymerization then functionalization and Na+ template-guided. Series synthetic reactions were studied using FTIR spectra method for tracking monitor. A best experimental formula of phend-aldehyde crosslinking reaction using monomer phenoxyethanol and a better conditions of series substitution reactions on the phenolic aldehyde parent polymer were achieved. FTIR spectra data of polymers of a series were achieved also. Polymeric static adsorption properties for normal metallic ions were tested. The results showed that the polymer has good adsorption properties for K+, Na+, Hg-2 , Cd2+, Fe3+, Pb2+ Cu2+ and the capacities of adsorption were 1.43, 0.98, 1.84, 0.68, 0.79, 0.61 and 0.57 mmol/g-r, respectively. By FTIR spectra method, a preliminary discussion on adsorption mechanism was given in this paper. The results showed not only -CH2OCH2- and PhOCH2- and -CH2NCH2-, could chelate metalion, but also -CH2OH did to a certain extent in the above mentioned complexes. There is slow oxidation-reduction in the adsorption of Hg2+ on PACE and the -CH2OH in the polymer PACE was oxidized to -COOH and Hg2+ were reduced to H-2(2+).
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2003年第3期420-425,共6页
Acta Polymerica Sinica
