山东化工
山東化工
산동화공
Shandong Chemical Industry
2015年
22期
7-9
,共3页
表面分子印迹%镉离子%柱分离%吸附
錶麵分子印跡%鎘離子%柱分離%吸附
표면분자인적%력리자%주분리%흡부
surface molecular imprinting%cadmium ions%column separation%adsorption
以三羟甲基丙烷三甲基丙烯酸酯(TRIM)作为交联剂,镉离子作为印迹分子,1,12-十二烷二醇-O,Oˊ-二苯基磷酸(DDD-PA)为功能单体,采用油包水,水包油(W /O /W)多重乳液聚合制备得到镉离子印迹微球。扫描电镜显示大约85%~95%Cd( III)的分子印迹微球颗粒的直径分布在20~40μm,平均直径约35μm。印迹微球膨胀率为25%,这说明了 TRIM 和 DDDPA 的组合导致识别位点规则的排布在聚合物表面。为了评价表面印迹技术的有效性,考察了这种镉离子印迹聚合物对镉离子和铜离子吸附性能。此外,将金属离子印迹微球应用于柱操作,通过填充有镉离子表面印迹微球的色谱柱进行金属离子分离和回收。与具有相似的磷酸基团商业螯合树脂相比,镉(II)印迹聚合物对镉离子显示出高选择性。
以三羥甲基丙烷三甲基丙烯痠酯(TRIM)作為交聯劑,鎘離子作為印跡分子,1,12-十二烷二醇-O,Oˊ-二苯基燐痠(DDD-PA)為功能單體,採用油包水,水包油(W /O /W)多重乳液聚閤製備得到鎘離子印跡微毬。掃描電鏡顯示大約85%~95%Cd( III)的分子印跡微毬顆粒的直徑分佈在20~40μm,平均直徑約35μm。印跡微毬膨脹率為25%,這說明瞭 TRIM 和 DDDPA 的組閤導緻識彆位點規則的排佈在聚閤物錶麵。為瞭評價錶麵印跡技術的有效性,攷察瞭這種鎘離子印跡聚閤物對鎘離子和銅離子吸附性能。此外,將金屬離子印跡微毬應用于柱操作,通過填充有鎘離子錶麵印跡微毬的色譜柱進行金屬離子分離和迴收。與具有相似的燐痠基糰商業螯閤樹脂相比,鎘(II)印跡聚閤物對鎘離子顯示齣高選擇性。
이삼간갑기병완삼갑기병희산지(TRIM)작위교련제,력리자작위인적분자,1,12-십이완이순-O,Oˊ-이분기린산(DDD-PA)위공능단체,채용유포수,수포유(W /O /W)다중유액취합제비득도력리자인적미구。소묘전경현시대약85%~95%Cd( III)적분자인적미구과립적직경분포재20~40μm,평균직경약35μm。인적미구팽창솔위25%,저설명료 TRIM 화 DDDPA 적조합도치식별위점규칙적배포재취합물표면。위료평개표면인적기술적유효성,고찰료저충력리자인적취합물대력리자화동리자흡부성능。차외,장금속리자인적미구응용우주조작,통과전충유력리자표면인적미구적색보주진행금속리자분리화회수。여구유상사적린산기단상업오합수지상비,력(II)인적취합물대력리자현시출고선택성。
The Cadmium ion -imprinted microsphere was prepared by using water -in -oil -in -water (W/O/W) multiple emulsion polymerization which were used trimethylolpropane trimethacrylate ( TRIM) as crosslinking agent, cadmium ion as imprinting molecule,1,12 -dodecanediol -O, Oˊ-diphenyl phosphonic acid (DDDPA) as functional monomer.The scanning electron microscopy showed The diameters of the 85% ~95% Cd (III) molecularly imprinted microspheres particle distribution were 20 ~40μm, the particle volume average diameter was 35 um.Inflation rate was 25%.That shows that the TRIM and DDDPA recognition sites were configurated on the polymer surface .In order to evaluate the effectiveness of the surface imprinting technique , we studied the adsorption performance of the cadmium ion molecularly imprinted polymers on cadmium ion and Copper ion .In addition, the metal ion imprinting microspheres were applied to the adsorption column packed with cadmium ion surface imprinting microspheres .The chromatographic column separation and recovery were carried out .Compared with similar commercial chelating resin with phosphate groups , cadmium (II) molecularly imprinted polymer showed high selectivity of cadmium ion .