简介：ThepotentiometricbehaviorofthechelatingionexchangeresinD751containingiminodiaceticacidgroupshasbeenstudiedat25℃bybatchtitrationwithalkaliandacidinwaterandinethanol-watermixturesolvent.Thetitrtioncurves,theamountofchemicallyboundcounter-ionsandinvasiveelectrolytesintheresinphase,andthesolventcontentstheresinhavebeeninvestigated.

简介：WatersorptionisothermsavailableintheliteraturesofNa^+-fromofDowex50W×4and×8,BioRex-70,Amberlyst-15,Nafion-117,hydroustitaniumoxide,crystallinezirconiumphosphateandzinchexacyanoferrate(Ⅱ）,havebeenanalysedbytheD′ArcyandWattequation.HydrationofNa^+intheionexchangersisthepredominantinteractionofsorbedwater.Thecorrelationbetweenthehydrationnumbersandthoseobtainedforelectrolytesolutionisfoundinthispaper.Qualitativeimplicationsofthestateofsorbedwaterintheionexchangersonitsvariouscharacteristicquantitieslikeselectivity,arebrieflydiscussed.

简介：Thepresenceoftracephosphatesintreatedwastewaterfrommunicipalitiesandindustriesisoftenresponsibleforeutrophicationproblemsinlakes,rivers,andotherwaterbodies.Inthispaper,wereporttheremovalofPO43-fromwaterbyusingapillaredrectoritethatwesynthesizedrecently.Theresultsshowthatcross-linkingcansignificantlyincreasetheadsorbingcapacityofNa-rectoriteforphosphates.ThepH,theconcentrationsofF,NH4+andCODaremainfactors,whichaffecttheresultsforpillaredrectoritetoadsorbphosphatesfromwater.TheOH-,andF-ionsdecreasethecapacitytoadsorbphosphates,whiletheCODandNH4+ionsincreaseit.

简介：D－riboseisaunique,5-carbonsugarthatoccursnaturallyinalllivingcells,D-ribosehasbeenusedasastaringmaterialforpreparationofsomecertainmedicinesorjustasanewnutraceuticalthathelpstheodynaturallyrestoreitsenergylevel,Thefermentativeprocessesarethebestfortheirrelativelysimpleseriesofproductionstepsandrelativelycheapstartingmaterials.However,becauseofthemanyimpuritiesinglucoseyeastwateranditsdarkcolor,pretreatmentandpurificationmustbedonetothefluidbeforeD-ribosecanbeseparated.Inthispaper,separationandpurificationofD-ribosewascarriedoutusingcationexchangeresins,ofwhichCa^2+exchangeresinhadthebesteffect.Theoptimalconditionforadsorptionisaflowvelocityof0.5BV/hatadsorptiontemperatureof25℃,Theoptimalconditionfordesorptionisaflowvelocityof0.5BV/hatdesorptiontemperatureof80℃。

简介：ThepreparationofconductingPPQfilmwasfirstreportedinthepreviouspaper.Itisveryinterestingthatthisfilmishighlysensitivetomoistureinair.ThehydrationanddehydrationofthefilmareaccompaniedbychangenotonlyincolorbutalsoinconductivityandUV-visiblespectrum.TheconductingPPQisreducedtoPPQandlosesitsconductivityafterbeingsoakedinwater.

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简介：支持硅石的分叉的polyethylenimine(Sil@PEI)是常规吸附物并且显示出一种有限亲密关系到anionic表面活化剂和小染料(K=106107L/mol)。如果PEI是与cetyl组(C16)一起的alkylated，产生吸附物的K(Sil@PEI@C16x，在x是PEI单位的部分的地方是alkylated)显著地被改进。优化证明Sil@PEI@C16-0.15能最好在1010mol/L附近把水的表面活化剂归结为残余；当Sil@PEI@C16-0.6能在1010mol/L下面把甚至小的水的染料归结为残余时，将近105-fold由Sil@PEI比那降低。吸附物是井recyclable。在染料的情况中，稠密的cetyl壳能从笨重的水孤立PEI并且因此走水路压制竞争绑定，这被相信；当时在表面活化剂的情况中，semiclosedcetyl壳能同时遇见静电的补充和恐水病的补充到表面活化剂。

简介：新奇tripyridylporphyrin单体，5-[4-[2-(acryloyloxy)ethoxy]苯基]-l0,l5,20-tris(4-pyridyl)porphyrin(TrPyP)，被综合并且有acrylamide(AM)到的polymerized准备恐水病地联系水溶性的聚合物PAM-TrPyP。卟啉pendants的聚集行为被调查由紫外可见并且荧光系列。聚合物在甚至显示恐水病的协会的一个强壮的趋势冲淡解决方案。与增加集中，407nm的从416nm的Soret乐队变化的最大的吸收波长，和荧光为展览节制集中熄灭的内部过滤器效果改正了。所有结果显示那-卟啉pendants的相互作用在卟啉的PAM-TrPyP，和H总数的协会起一个关键作用主要在集中的答案被形成。在另一方面，散布的动态光(DLS)和传播电子显微镜学(TEM)被用来随集中增加在macromolecular集会的尺寸和结构跟随变化。聚合物聚集符合构造因此从松开的像泡的形态学改变到稳固的水珠。当答案的pH价值减少到4.3时，卟啉pendants上的pyridine一半能是protonated，在macromolecular矩阵形成的H总数被静电的排斥相互作用破坏。

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简介：ThePVCservesofmacroporoussulfoniccation-exchangeresinswerepreparedbythesulfonationofamacroporousPVCbeadwithconcentratedsulfonicacidorchlorosulfonicacid.theresultingsulfonicresinwasemployedintheinvestigationofcatalyticesterificationandsolfteningofwater,Theresultsshowthattheyieldsofestersreach60.0-84.4%accordingasdifferentfattyacidsandalcohols,therefractiveindexesofestersobtainedresemblethosereportedinthereferencesbasically,meanwhile,345Lsoftenedwaterwhichholds≤0.06mmol/Lhardnesswouldbepreparedby1Lwetsulfonicresinreusingfor4times.Theresultingsulfonicresinswouldhave1.6-2.0or2.5-3.0mmol/gexchangecapacitybyusingconcentratedsulfonicacidorchlorosulfonicacidassulfonatingagent,respectively,Thesulfonicresinhasamacroporousstructuretakingthemorphologywithagglomeratesofminutelysphericalgelparticlesascharacteristic.

简介：我们为把坚持、有效的抗菌剂性质合并到广泛地使用的聚合物报导灵巧的策略，poly(甲基methacrylate)(PMMA)，由异分子聚合有2-(tert-butylamino)的甲基methacrylate(MMA)在经由原子转移基聚合(ATRP)的一个壶的乙醇methacrylate(TA)。随后自己组装结果poly(甲基methacrylate)-block-poly[(2-tert-butylamino)ethylmethacrylate](PMMA20-b-PTA15)diblock共聚物负担得起明确的水可分散的泡，它能轻易地为有效抑制在医院里在墙上被喷洒并且细菌杀死。1H-NMR和胶化浸透层析(GPC)研究证实了良好共聚物的成功的合成。传播电子显微镜学(TEM)，原子力量显微镜学(AFM)和散布的动态光(DLS)学习与狭窄的尺寸分发证明了泡的形成。DLS研究在各种各样的温度揭示了泡的优秀稳定性。抗菌剂测试对克积极、克否定的细菌显示出聚合物泡的有效抗菌剂活动。而且，这策略可以为在许多领域里为灵巧的抗菌剂应用准备大量聚合材料被扩大。

简介：Fromaneconomicalpointofviewboththequalityoftheionexchangeresinsandthetechnologyusedinthefieldofindustrialwatertreatmentareimportantforasuccessfulperformance.Ingeneral,twodifferenttechnologieshavebeenestablishedonthemarket:ThemaindiffernecesbetweentheCO-andcountercurrenttechnologeswillbediscussedanddataconcerningtherequirementofchemicalsforregenerationandthequalityofthedeionizedwaterwillbeopposed.Inadditionseveraldifferentvarietiesofthemoderncountercurrenttechnologies,developedandpatentedbyBayerAG,willbedescribedandtheadvantages,dependingontheapplicationandthedemandonthequalityofthedeionizedwater,pointedout.Inviewofstrongerregulationsconcerningtheconsumptionofregenerationchemicals,andwastewater,andalsobecauseofthesuperiorqualityoftheproducedwater,themarketshareofcountercurrenttechnologieswillcontinuetoincreaseworld-wide.

简介：Awater-compatiblephenolichydroxylmodifiedpolystyreneadsorbent(AM-1)foradsorbingandremovingphenoliccompoundsfromaqueoussolutionswaspreparedbycovalentbondingofphenolichydroxylgroupstothesurfaceofporouspolystyrene-divinylbenzenebeads,thisresincanbeuseddirectlywithoutwettingprocess.AcomparisonofthesorptionproperitesofthenewresinandAmberliteXAD-4towardfourphenoliccompounds,phenol,p-cresol,p-chlorophenol,andp-nitrophenolwasmade.ThecapacitiesofequilibriumadsorptionofAM-1forallfourphenoliccompoundsincreasedaround20%overthatofAmberliteXAD-4,whichmaybecontributedtopheonlhydroxylgrouponthesurfaceandtheunusualpoedistribution.Attheirdilutesolution,theequilibriumadsorptioncapacitiesofAM-1forphenolincreasedaout62%overthatofAmberliteXAD-4,whileequilibriumadsorptioncapacitiesoftheotherthreephenoliccompoundsincreased4-35%,suggestinganadvantageofAM-1overAmberliteXAD-4inthecollectionofphenol.FreundlichisothermequationsandisostericadsorptionenthalpiesforthefourphenoliccompundsindicateaphysicaladsorptionprocessontheAmberliteXAD-4andAM-1resins,ColumnstudiesforphenolshowthatAM-1resinhasexcellentadsorptionanddesorptionperformance.

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简介：ThepaperintroducesthepreparationoffloatingTiO2/beadsphotocalystattachedtothehollowglassmicro-beadssurfacebysol-geltechniqueusingtetrabutyltitanateasmaterialandthepreparationoffloatingCoPcS/TiO2/beadsbydip-coatigtechnique.TheoptimalfactorofdegradationofvegetableoilfloatingonwaterusingCoPcS/TiO2/beadswasstudied.Theresultshowedthattheremovalrateofvegetableoilfloatingonwatercanhighlyreach90%attheoptimalcondition(acidityorneutrality,375Wmedium-pressuremercuryvapourlamp,illumination2h~3h,1gCoPcS/TiO2/beads).ThephotocatalyticremovalefficiencycausingbyCoPcS/TiO2/beadswasincreasedrapidlybyaddingatraceamountofH2O2.

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：Acrylonitrile(AN)andmaleicanhydride(MA)copolymerhasbeensynthesizedbyradicalpolymerizationusingammoniumpersulfateandsodiumbisulfiteasinitiator.Thepervaporationpropertiesofthecopolymericmembranespreparedhavebeeninvestigatedforthefirsttime.Thedependencesofpervaporationcharacteristicsoncoplymercomposition,feedconcentrationandoperatingtemperaturehavebeenstudied.Inordertoimprovetheseparationpropertiesofthecopolymericmembranes,themembraneswerehydrolyzedwith10wt%soldiumhydroxideorpotassiumhydroxideaqueoussolution.Thehydrolyzedmembranescontainingmorethan0.069MAmolfractionshowedhighertensilestrengthandseparationpropertiesthantheoriginalmembranes.

简介：Thesolubilityofinitiatordeterminesitsdistributionandtherolesplayedinemulsionpolymerizationaswellasthefinalproducts,butthisisstilllackofsystematicinvestigation.Thepresentworkfocusesonthisissuebycomparingthekineticbehaviorsandproductpropertiesofstyreneemulsionpolymerizationinitiatedby2,2-azoisobutyronitrile(AIBN)andpotassiumpersulphate(KPS).ComparedtoKPS-initiatedemulsionpolymerization,theAIBN-initiatedpolymerizationwasfoundtobeinsensitivetothetypeofemulsifier,andhavehighpolymerizationrateaswellasnarrowmolecularweightdistributionandparticlesizedistribution.Thisresultindicatestheeffectivefreeradicalsaregeneratedinmicellesorcolloids,whichcoulddecreasetheproportionofhomogeneousnucleationandmaketheprocessandproductmorecontrollable.Asaconsequence,thereisalinearrelationshipbetweenmolecularweightofproductandAIBNconcentrationinlg-lgcoordinate.Itprovidedareferenceforthepreparationoflatexeswithspecifiedmolecularweightandsupportedthepossibilityofthecoexistenceofmultiplefreeradicalsinonemicelleorcolloidwhenusingoil-solubleinitiator.