简介:Theadsorptionpropertytheoperatinglife,theoperatingexchangecapacityandregenerationofD412macroporousphosphonomethylaminachelatingresinforremovingCa2+,Mg2+andFe2+fromhighpHbrineofalkaliproductionbyionicmembranewereinvestigatedTheresinshowedgoodphysical-chemicalandkineticproperty,highexchangecapacity,excellentdurability.
简介:Antibacterialpoly(D,L-lactide)(PDLLA)fibrousmembranesweredevelopedviaelectrospinning,followedbysurfacemodificationwhichinvolvedplasmapretreatment,UV-inducedgraftcopolymerizationof4-vinylpyridine(4VP)andquaternizationofthegraftedpyridinegroupswithhexylbromide.ThesuccessofmodificationwithquatemizedpyridiniumgroupsonthePDLLAfibrousmembraneswasascertainedbyX-rayphotoelectronspectroscopy(XPS).TheantibacterialactivitiesofthesemembraneswereassessedagainstGram-positiveStaphylococcusaureus(S.aureus)andGram-negativeEscherichiacoli(E.coli).ThePDLLAfibrousmembranesmodifiedwithquaternizedpyridiniumgroupsshowedantibacterialefficiencyagainstbothbacteriaashighas99.999%.Theresultsdemonstratedthattheantibacterialactivitywasbasedontheinteractionofthepositivechargeofpyridiniumgroupandnegativelychargedcellmembraneofbacteria,resultinginlossofmembranepermeabilityandcellleakage.
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:ExtractionandseparationofRadishredpigmentfromawastewaterofsaltingRadishwasstudiedonD61resin.Theexchangecapacityofadsorptionthepigmentwasequalto60.91mg·g^-1wetresin,andtheequilibiumtimeonly40mins.AllRadishredpigmentadsorbedonD61resinwaselutedusingaeluentinwhichconcentractionofHCloralcoholwas0.1mol·L^-1or80%at50℃whentheflowratewasat2BV·hm^-1.StabilityofD61resinwasverywell,andwhiletheresinwasrecycledfifteentimes,theexchangecapacitywasonlydecreased11.9%,andtheexchangecapacitydidn′tchanged.Becauseofnegativeionofmustardoil,itcould′tbeadsorbedontheresin.Finally,apasteproductwithyieldof1.96mg·100ml^-1wastewaterwasobtainedafteralcoholevaporationandvacuumdrying.
简介:Polymerizable离子的液体共聚物PMMA-co-BVIm-Br被激进的聚合技术综合,并且由Fourier变换描绘了红外线的spectrometryFTIR,<啜class=“a-plus-plus”>1H原子磁性的回声<啜class=“a-plus-plus”>1H-NMR和胶化浸透层析GPC。产生共聚物被用来经由一个阶段倒置方法准备polyvinylidene氟化物PVDF混合膜。多型性,表面wettability和混合膜的希腊语的第六个字母潜力上的共聚物的效果被ATR-FTIR,接触角度仪器和希腊语的第六个字母潜力分析器调查。扫描电子显微镜学SEM和SEMedition也被使用调查形态学和制作的膜的表面元素变化。结果显示那PMMA-co-BVIm-Br共聚物在让混合膜在试验性的pH范围期间有积极表面的膜的表面上存在。共聚物也赞成在PVDF膜的水晶阶段的形成。接触角度实验显示那PMMA-co-BVIm-Br共聚物能交换混合膜的wettability从对吸水由交换Br恐水病<啜class=“a-plus-plus”>有PF的阴离子<潜水艇class=“a-plus-plus”>6<啜class=“a-plus-plus”>。与纯PVDF膜相比,混合膜的水流动和水恢复流动显然被提高。从流动恢复比率FR和全部的犯规比率R的结果<潜水艇class=“a-plus-plus”>t都建议混合膜有好犯规反的性质。
简介:Theefficiencyofthepoly(3-hexylthiophene)(P3HT)and[6,6]-phenylC61-butyricacidmethylester(PC61BM)basedorganicsolarcellswasenhancedbyusing1,2,4-trichlorobenzene(TCB)asaprocessingadditivetocontroltheblendmorphology.TheadditionofTCBimprovedthearrangementofP3HTwhichresultedingoodphaseseparatedblendfilms.Correspondingly,theoptimizedsolarcellsshowedapowerconversionefficiency(PCE)of4.17%withafillfactor(FF)of0.69,whichwerehigherthanthoseofcommonthermalannealingdevices(PCE3.84%,FF0.67).Theefficiencywasfurtherimprovedto4.74%bythermalannealingat150°Cfor10minwithahigherFFof0.74.
简介:一个非水的暂停polycondensation方法被建议继续为准备的p-phenylenediamine和terephthaloyl氯化物的反应poly(p苯撑terephthalamide)(PPTA)。系统与NMP-CaCl被操作<潜水艇class=“a-plus-plus”>是的2答案驱散的阶段和是的惰性的液体石蜡连续阶段。每NMP-CaCl<潜水艇class=“a-plus-plus”>在石蜡推迟的2答案microdroplet用作polycondensation发生了的microreactor。根据TGA,XRD,红外,SEM和EA的结果,有好质量的PPTA通过这个新奇方法被获得,并且影响这个过程的很多个主要因素被调查为PPTA的准备决定最佳条件。而且,这个二阶段的polycondensation系统与常规解决方案polycondensation方法相比带给许多唯一的优点,包括使反应物离开氧和水的封上的反应环境,HCl到的容易的移动支持更少的精力花费了工具的反应,控制得好的温度和低粘性。
简介:Two-dimensional(2D)materialshavebeendemonstratedtoexhibituniquepropertiesoriginatingfromits2Dnature.Inrecentyears,theconstructionof2Dmaterialshasbecomeatopicofgreatinterest.Thisarticlesummarizestherecentadvanceof2Dsupramolecularorganicframeworks(SOFs)whicharehomogeneouslyconstructedinsolutionphasethroughself-assemblyofrationallydesignedbuildingblocks.These2DSOFsaresolubleandstillmaintainstablenetworkstructuresinsolutions,whichexhibituniquenessnotonlyinstructuresbutalsoinproperties.Inthisconcisereview,theSOFs-relatedbackgroundisbrieflyintroducedfirstly,followedbyoutliningtheresearchprogressofsoluble2DSOFsfromtheperspectiveofmonomerdesign,assembly,andstructuralcharacterization.Thearticleendswithapersonaloutlookonthefuturedevelopmentofthisnewclassofsupramolecularpolymers.
简介:TheexchangebehaviorsofWO4^2-,MoO4^2-,H2W12O46^6-andMo8O26^4-anionswithinmacroporousexchangeresin(D290)phaseshavebeenstudied.Thevaluesofdiffusionconstant(B),innerdiffusioncoefficient(D^-),retartedtime(τd)half-exchange-period(t1/2),andactivationenergy(ΔE)werefoundfromthekineticanalyses.AnewmethodtoseparateW(VI)andMo(VI)fromeachotherwasalsosuggested.