简介：AStronglyhydrophilichydrogen-bondingadsorbent-macroporouscrosslinkedPoly(Nvinyl-acetamide),whichcontainbothhydrogenbondacceptoranddonator,wassynthesized.Adsorptionmechanismanddynamicadsorptionoftanninfromaqueoussolutionontotheadsorbentwereinvestigated.MostofthedifferntialadsorptionheatsforvariousadsorptioncapacitiescalculatedfromtheadsorptionisothermsaccordingtoClapeyron-Clausiusequationlayintherangeofhydrogenbondenergy(8-50J/mol).Adsorptionpropertiesoftheadsorbentwerestudiedindetail.Theseresultsrevealedahydrogenbondingmechanismoftheadsorptionoftanninfromaqueoussolutionontotheadsorbent.Theresultofthedynamicadsorptionoftanningwiththeinitialconcentrationunder600mg/Lshowedthattheadsorptionrateoftanninexceeded90%whentheflowratewas3BV/handtheeffluentvolumereached100BV.Therefore,thedevelopedhydrogen-bondingadsorbent-macroporouscrosslinkedpoly(N-vinyl-acetamide)-isanexcellentadsorbenttoremovetanninfromextractofnaturalproducts,andhasgreatvalueinapplication.

简介：glutamic酸(LG)和丁氨二酸酸(ASP)的随机的共聚物，poly(LG-co-ASP)，能成功地与debenzylation经由N-carboxyanhydride戒指开始copolymerization的联合与设计作文被综合。-benzyl-L-glutamateN-carboxyanhydride(BLG-NCA)和-benzyl-LaspartateN-carboxyanhydride(BLA-NCA)的戒指开始copolymerizations被使用不同的胺包括执行象开始者的triethylamine(茶)，diethylamine，n-hexylamine(NHA)，triphenylamine，二苯胺或苯胺。所有6胺是高度有效的poly变得明确(BLG-co-BLA)共聚物与尽管聚合经由不同机制(正常的胺机制或/并且激活的单体机制)继续了，设计了作文，它基于胺的化学结构。分子的重量(BLG-co-BLA)poly，共聚物能被茶集中和聚合时间调停。然后，debenzylation(BLG-co-BLA)poly，共聚物被进行准备相应吸水的随机的共聚物(LG-co-ASP)poly以ASP结构的单位与子单元组织。LG结构的单位在的内容(LG-co-ASP)poly，共聚物在NCA单体BLG-NCA与那些匹配在NHA或茶开始并且接近了理论线的戒指洞copolymerizations喂。diblock共聚物(BLG-b-BLA)能被BLGNCA和BLA-NCA的顺序的增加也poly经由生活NCA戒指洞copolymerization综合。

简介：ThesorptionbehaviorofN-methyl-2-thio-imidazoleresin(MTIR)forRh(Ⅲ）wasinvestigated.TheoptmumsorptionconditionofMTIRforRh(Ⅲ）,sorptionratet1/2=84min,sorptioncapacity1.37mmolRh(Ⅲ）/gMTIR,[140.5mgRh(Ⅲ）/gMTIR],sorptionmolarratio0.34Rh(Ⅲ）/functionalgroup,distributioncoefficientD=2.5×10^3mg·g^-1weredetermined.ThesorptionselectivityofMTIRforRh(Ⅲ）inthepresenceofcommonmetalions,Fe^3+,Co^2+,Ni^2+andCu^2+wasexamined.Rh(Ⅲ）adsorbedonMTIRcanbeelutedquantitativelybyusingamixedsolutioncomposedof20%thio-urea-acetone:6molHCl.dm^-3(1:1vol.)usedasaneluent.Rh(Ⅲ）canbeseparatedfromthemixtureofRh(Ⅲ）andFe^3+,Co^2+,Ni^2+,Cu^2+byusingD72resinandMTIRsuccessively.

简介：在这个工作，综合体新热地稳定(amide-imide)poly，有在n丁基甲基imidazolium溴化物的悬挂的2-pyridyl-1,3,4-oxadiazole单位的s作为反应媒介被报导了。新二羟基的酸从肼的反应被导出，2-(5-(3,5-diaminophenyl)-1,3,4-oxadiazole-2-yl)pyridine(POBD)，和trimellitic酸酐。聚合物在丁基甲基imidazolium溴化物从diimide二酸(DIDA)和不同的芳香的肼的反应被准备，[bmim][Br]，面对triphenyl亚磷酸盐(TPP)作为没有需要任何额外的部件的压缩代理人。poly准备了(amide-imide)s被FTIR描绘，元素的分析，并且通过模型混合物的合成。准备聚合物是可溶的在极并且aprotic溶剂例如DMF，DMSO，NMP和DMAc。聚合物答案的固有的粘性在在0.125g/dL的集中在集中的H2SO4测量在的0.521.33dL/g的范围(25