CAJ | 학술논문

研究了甲醛、环氧氯丙烷交联壳聚糖树脂(AECTS)对Hg2+的吸附行为和吸附Hg2+对树脂结构及性能的影响.用FTIR、XRD、TG、DSC和SEM对吸附产物进行了结构表征,并深入分析了AECTS与Hg2+之间的作用机理.结果表明:Hg2+与AECTS中的氨基发生配位、与AECTS中的羟基形成离子键而被吸附;AECTS吸附Hg2+后,结晶度下降、总体上热稳定性变差;Hg2+对AECTS的主链分解具有明显的催化功能;Hg2+的成键使得AECTS的表面形态发生了改变.
연구료갑철、배양록병완교련각취당수지(AECTS)대Hg2+적흡부행위화흡부Hg2+대수지결구급성능적영향.용FTIR、XRD、TG、DSC화SEM대흡부산물진행료결구표정,병심입분석료AECTS여Hg2+지간적작용궤리.결과표명:Hg2+여AECTS중적안기발생배위、여AECTS중적간기형성리자건이피흡부;AECTS흡부Hg2+후,결정도하강、총체상열은정성변차;Hg2+대AECTS적주련분해구유명현적최화공능;Hg2+적성건사득AECTS적표면형태발생료개변.
The adsorption thermodynamics properties of new type chitosan (AECTS) crosslinked by aldehyde and epichlorohydrin with Hg2+ and the influence of Hg2+ on the AECTS structure and performance were investigated. The structure of adsorption products was characterized by Fourier transform IR, XRD, TG, DSC and SEM. The results showed that the adsorption is realized by binding–NH2 and–OH groups in AECTS with Hg2+. Compared with AECTS, the structure and properties of AECTS-Hg2+have been markedly changed. Its crystallinity and generally thermal stability decreased. The metal ion had catalyzing function to the decomposition of AECTS main chains. The morphology studies by SEM which show the loaded AECTS change their surface dramatically.