简介：

简介：Theadsorptionof2,4-dinitrophenoland2,6-dinitrophenolonnon-polarandpolaradsorbentswasstudied.TheresultsshowedthattheequilibriumadsorptiondidnotcomplywiththeLangmuirequationandwasnotmono-layeradsorption.ItisofinteresttonoticethattheeffectofpHontheadsorptionof2,4-or2,6-dinitrophenolontoADS-7andADS-21wasverysmall,Theresultisexplainedbyhydrogenbondinginteractionbetween2,4-or2,6-dinitrophenolandtheadsorbentADS-21.ThelargeadsorptioncapacityofdinitrophenolontoADS-21,whichwasabout500mg/gatanequilibriumconcentrationof400mg/L,andthesmalldinitrophenolleakageintheeffluentfromADS-21columnpresentedagoodprospectfortreatmentofwastewatercontainingdinitrophenolwithadsorbentADS-21.

简介：

简介：N-nitrosaminesarestrongcarcinogensforhumans.Thispapergivesanoverviewofthenitrosmainesincigarettesmokeincludingtheformation,theharmfulness,theanalyticalmethodsofthenitrosmainesandtheadsorptionsanddegradationsofN-nitrosamines.

简介：AmmoniumcanchangethetypeofnaturalclinoptilolitefromJinyunofZhejiangProvinceofChina.Thecharacterofexchangeandselectivityofammoniumtypeclinoptilolitetothealkaliandalkaline-earthmetalwereinvestigated,theheatresistanceandnitricacid-resistanceofnaturalclinoptilolitewerediscussed.AlltypesofclinoptilolitewereresearchedbymeansofX-ray,IRspectroscopy,DTAanalyses.Theionexchangewasexperimentedbycolumnoperation,indicatingthatthevalidamountofexchangecapacityofNH4^+typeclinoptilotiesismorethan25mg/g.

简介：TryptophanresiduesofIgGRFfromrheumatoidarthritispatientweremodifiedwithN-Bromosuccinimide(NBS)andtheproductofmodificationwascharacterizedbyUV-spectrum,FluorescenceemissionspectrumandCD-spectrum.ThecorrespondingadsorptioncapacityofimmobilizedssDNAimmunoadsorbentforIgGRFwasenhancedfrom46%to86%,ThisresultindicatesthetryptophanresidueisessentialfortheinteractionbetweenssDN,AandIgGRF.andionic-bondingplaysanimportantroleinadsorption.

简介：PLAispresentlyconsideredasthemostattractivecompoundfortemporarytherapeuticapplicationinthebiomedicalfield.Inthispaperwegiveanoverviewofthepresentknowledgeonthedegradationbehavior,processingtechnologyofPLAanditsapplicationinthefixationofbonefracture.

简介：Polymersupportedalkyldimethylbenzylammoniumchlorideresindisinfectantusedforthedisinfectionofdrinkingwaterhasbeensynthesized,anditsantibacterialactivitieshavebeendetermined,comparedwiththecommerciallyusedtriiodinedisinfectantresin.Theresindisinfectantwasgeneratedsuccessfullywhenusethecombinationofsurfaceactiveagentsandultrosonic.

简介：PolymericGrignardReagent(PGR)basedonthechloromethylatedpoly(ST-co-DVB)resinhasbeenpreparedbymeansofanthracene-magnesiumcomplexinTHF(Anth-Mg-THF),andpolymermatrixwithlongpolymethylenespacerwassynthesizedviathecouplingreactionbetweenPGRandα,ω-dibromoalkanes.Basedonthestudiesoffactorsaffectingthecoupling,suchascatalyst,reactiontime,thelengthofspaceretc.,thispaperofferstheoptimalreactionconditionsandthreetypicalexperimentprocedures.ThemechanismfortheformationandcouplingreactionofPGRarealsodiscussed.

简介：Anovelbeadfromofploymerofhighsorptioncapacityforureawereobtainedbythereactionofglutaricdialdehydewithchitosandispersedinaceticacidsolution.Thesorptioncapacityreached-82.0mg/gsorbentat37℃andpH7.4Theconcentrationofureainthebuffersolutionwas1300mg/l.Thesorptionofureawasrelatedtothedegreeofcrosslinkingofthesorbent,concentrationofurea,ionicstrengthandtemperature.

简介：

简介：

简介：Anureaadsorbentwithanaldostructurewasobtainedbytheoxidationofacrosslinkedβ-cyclodextrinpolymer.Thehighestureaadsorptioncapacityreached56.7mg/gin0.05Maqueousphosphatebuffer37℃andpH=7.4,anddecreaseto4.8mg/gininaqueoushumanserumalbumin.Thecompositeadsorbentwaspreparedbytheoxidationofacrosslinkedβ-cyclodextrinanddialyticmembrane.Itwasfoundthatthecompositeadsorbenthasahigherureaadsorptionselectivityandcapacitycomparedtothatoftheoxidationofacrosslinkedβ-cyclodextrinadsorbentwhenureaisinaqueoushumanserumalbumin.

简介：MethodofVSC(VoltageShortedCompaction)canbeusedtodeterminetheintrinsictemperaturedependenceofconductivityofpolycrystallinecompaction.TheexperimentalconditionsandtechnicalkeyforpreparationofVSCdeviceanditsphysicalmodelaswellasitsapplicationsinconductingpolymersarediscussedindetail.

简介：

简介：Polyfluoroalkylsubstituted2-hydroxyethylacrylate6wassynthesizedinsixstepsusingglycerolasastartingmaterial.Apreliminaryinvestigationhasbeentakenonthesynthesisandcharacterizationofcopolymersof6and2-hydroxyethylmethacrylate.

简介：Inthispaper,thekineticmomentexpressionsandratelawsarederivedforpellicularionexchangematerialswithvariousgeometricalformsundertheconditionsthationexchangerateiscontrolledbyboththeparticaldiffusionandthefilmdiffusioninfinitesolutionvolume.Inaddition,forstrongacidiccationionexchangefibre,byusingtheequationsobtainedwecalculatedtheparticaldiffusioncoefficientsandthetransfercoefficientsinthefilmunderdifferentexperimentalconditions.

简介：有在170，180和190的温度从0.1wt%到1.0wt%的低过氧化物集中的高密度聚乙烯的Crosslinking反应

简介：Simultaneousfunctionalizationandreductionofgrapheneoxide(GO)isrealizedbyrefluxingofGOsuspensionwithpolyetheramine(D2000)followedbythermaltreatmentat120°C.ComparedtoGO,theD2000-treatedGO(GOD2000)becomeshydrophobic,thermallystableandhighlyconductivewithanelectricalconductivityof11S/m,whichisalmost8ordersofmagnitudehigherthanthatofGO.DuetothehighconductivityandimproveddispersionofGO-D2000,itsepoxynanocompositesexhibitasharptransitionfromelectricallyinsulatingtoconductingwithalowpercolationthresholdof0.71vol%.With3.6wt%GO-D2000,theglasstransitiontemperatureoftheepoxynanocompositeis27Khigherthanthatofneatepoxy.

简介：Anewtypeofseleniouspolymer,silica-boundpolybispropoxyethyl-selenidesilsesquioxane,anditsplatinumcomplexweresynthesizedfrombis-allyloxyethylselenideviahydrosily-lationwithtriethoxysilane,followedbyimmobilizedonfumedsilica,andthenreactingwithpotassiumchloroplatiniteundernitrogenatmosphereinacetone.Itwasfoundthattheplatinumcomplexcancatalyzethehydrosilylationofolefinswithtriethoxysilaneeffec-tivelyTheeffectsofthenatureofthesubstrate,theamountofcomplexused,andthereactiontemperatureonthecatalyticactivitywereinvestigated.