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简介：Inthispaper,fibrouschelatingexchangerswith-N(CH2COOH)2grouphavebeenpreparedforthefirsttimebyaweaklybasicanionexchangefiber(aminatedfiber)asthestartingmaterials.ThefiberswerequiteeffectivefortheadsorptionofheavymetalionsuchasCu^2+.Inaddition,IRspectrumofthestructureoffibersconfirmsthatitisfeasibletoprepareiminocarboxylicchelatingfiberthroughdirectcarboxylationreaction.

简介：Throughinterfacialpoly-condensationofR2SnCl2(R=Me,Bu)withvariousdiacids,diphenols(diols),diamines,amino-acids,hydroxyacids,urea,orthiourea,aseriesoforgano-tinpoly-esters,poly-ethers,poly-amines,poly-amine-esters,poly-ureas,poly-thioureaswereprepared,andcharacterisedaltogethertotalling100polymers,amongwhich91arepreviouslyunreported.ThesynthesizedpolymershaveapotentialasathermostabilizerinPVCproducts.

简介：Inordertorefinetheproductsofwheatgermagglutinin(WGA),severalionexchangers,suchasD261,732,DEAE-cellulose-32andCM-cellulose-32,havebeenusedtoremovedproteinsandpigmentswithdifferentcolors,suchasbrown,red,yellow,greenandblack,intheextractsofwheatgerm.TheWGAobtainedfromthisprocedurehashigherhemagglutinationactivitythanthatavailablefromsigmaCo.TheminimumhemagglutinationdoseofthepurifiedWGAforanequalvolumeofa2%typeAredbloodcellsis4μg/ml.WGAisamixtureofisolectinswithdifferentisoelectricpoints,5.9,6.2and6.8.TheirmolecularweightidentifiedbySDS-polyacrylamidegelelectrophoresisare15,000dalton,18,000daltonand35,000dalton,respectively.

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简介：TheK2Ti4O9whiskerswerechosenforthecatalystcarrier,TiO2/potassiumtitanatephotocatalystwaspreparedbySol-gelmethod.TheproductwascharacteratedbyX-raydiffractionandSEM.EDSshowsthat,themainpeckincludedTi,O,andKinpotassiumtitanatewhisker.ThemainpeakofKdisappearedandthepeaksofTi,Ostayedafterwhiskerwascovered.ItdirectedthatthesurfaceofsamplewascoveredbyTiO2.XRDshowsthatdiffractionpeakappeared,whichwascorrespondedtothepeakofanataseTiO2.Inthereactiondeviceofphotochemistry,usingmiddle-pressuremercurylampasillumination,rhodamineBassimulantpollutant,thephotocatalyticperformanceofTiO2/potassiumtitanatewasstudied.Underthesameconditions,thelowerpH,thelargerilluminance,thehighertemperature,thegreateraerationquantumandthelowerinitialconcentrationofrhodamineB,thehigherdecolorationratewasgot.Underourexperimentconditions:pH6,theilluminanceof250W,thetemperatureof313K,andtheaerationquantumof2.0L/min.WhentheconcentrationofrhodamineBwas8mg/LThephotocatalystofTiO2/potassiumtitanatewas0.01g/L.ThedecolorationrateofTiO2/potassiumtitanatedealtwiththerhodamineBreachover95%in160min,andcomparewithTiO2,thedecolorationrateofrhodamineBwasimproved0.50~1.91multiple.TiO2/potassiumtitanatecanbeusedtotreatmentofdyewastewater.

简介：PLAispresentlyconsideredasthemostattractivecompoundfortemporarytherapeuticapplicationinthebiomedicalfield.Inthispaperwegiveanoverviewofthepresentknowledgeonthedegradationbehavior,processingtechnologyofPLAanditsapplicationinthefixationofbonefracture.

简介：AuseofSulfonateesterasalinkerinsynthesisofω-aminoalkanolswasreported.Diolsweretetheredontopolystyrylsulfonylchlorideresin,yieldingsulfonateresins(2).Aftercleavedbydiethylamine,diisopropylamineandpropylaminerespectively,threeω-aminoalkanolswereobtained.

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简介：Sphericalmacroporouscopolymersofmethylacrylateandtrimethylopropanetriacrylatewithdifferentsurfaceandporestructureweresynthesizedviasuspensionpolymerization.andtheirsurfaceandporestructurewerecharacterizedbymeasurementsofsurfacearea,apparentdensityandskeletondensityandcalculationofaverageporediameter,Theresultsrevealedthatcrosslinkingdegreeandporogentdeterminedthephysicalstructureofthesecopolymers.Someofthecopolymerswereappliedtoadsorptivepurificationofginkgoleavesextracttoenhancethecontentofflavonoids,theresultsshowedthatmostofthecopolymerscouldbyusedtoincreasetheflavonidscontent.

简介：Polymer-supportedRCpCpTiCl2(Cp=η^5-C5H4;RCp=η^5-RC5H4)havebeenpreparedandreducedbyi-C3H7MgBrinsitu，thenusedincatalyticisomerizationof1,5-hexadiene.Theisomerizationof1,5-hexadieneleadstoamixtureofcyclicandlinearproducts.Theratioofcyclictolinearproductdependsonthenatureofthesupporterandthesubstituentonthecyclopentadienylring.Theformercontributesthemost,forexample,silicasupportedCp2TiCl2gavecyclic-linearratioof99/1,whileforpolymer-supportedCp2TiCl2species,linearcompoundsarethemajorproductsandtheratioofcyclictolinearproductchangeswithdifferentRgroupsonthecyclopentadienylring.

简介：Arapidmethodhasbeendevelopedforrapidsampleclean-upinthedeterminationofthepharmacologicallyactiveterpenoidincludingginkgolideA,B,Candbilobalideinginkgobilobaleavesextracts(GBE).Theextractsaredissolvedin7%ofethanolaqueoussolutionandthenpurifiedbyahighlyselectivepolyericadsorbentsolid-phasechromatographiccolumn.Afterbeingconcentrated,theseparatedterpenoidswithnophenolicdistrubancearedeterminedbyhighperformanceliquidchromatorgraphyonaNova-PakC18columnwithmethanol-water(30:70)aseffluentandrefractiveindexdetection.Therecoveryofthemethodisabout95%andthenewmethodsavesmoretimethantheconventionaltwo-columnpurificationmethod.

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简介：Spinodalphaseseparationbehaviorofpoly(methylmethacrylate)/poly(styrene-co-acrylonitrile)(PMMA/SAN)blendswasinvestigatedbythetime-resolvedsmallanglelightscattering(SALS)technique.Itwasfoundthattheinfluenceoftemperatureonthescatteringintensityevolutionfollowedthetime-temperaturesuperpositionprinciple.TherelationshipbetweentemperatureandtherelaxationtimeofscatteringintensityI(t)canbewelldescribedbytheWilliams-Landel-Ferry(WLF)function.

简介：Gasphasereductionofcarbonmonoxidetoformaldehydeandethylenewasfoundinelectrochemicalcellwithaninorganicionexchangerα-Zr(HPO4)2·H2Ousedassolidproton-conductingelectrolyteatroomtemperatureandatmosphericpressure.ThetypeandamountoftheelectroreductionofCOdependonthedifferentmetalelectrodesandcurrentdensities,whichgivesalankbetweenheterogeneouscatalysisandelectrochemistry.