简介：Inthispaper,radiation-inducedcrosslinkingmechanismandcharacterizationofthecrosslinkingdensityofF-40andF-4byX-rayphotoelectronspectroscopy(XPS)havebeenstudied.ThedoseofgelationofF-40obtainedfromXPSis4.1×10~4Gy.ItisfoundthatcrosslinkingdensityisthelargestintherangeofcertaindoseforF-40andF-4.

简介：TheimmunomodulatingeffectsofF12onmouseperitonealmacroplhageswasintendedtobestudiedwithdifferentdosesof20,40,80,and120mg/Kg.F12increasedperoxidaseactivityindexcdependentmammerfrom0.02±0.001,to0.175±0.038,0.211±0.041,0.137±0.045and0.078±0.036,respectively,increasedcytotoxicityfrom127.33±22.96to162.74±19.53,237.30±25.15,178.62±36.22and158.66±42.75dpm,respectively,promotedphagocyticactivityfrom0.03±0.01to0.21±0.016,0.43±0.041,0.40±0.032and0.30±0.160^b,Furthermore,F12inaconcentrationof15,30,60,120ug/mlenhancedIL-1productionfrom0.15±0.02to0.20±0.005^b0.21±0.02,0.22±0.005,0.24±0.002and0.22±0.02,respectively,ThusF12canbeconsideredasaneffectivestimulatorofmacrophages.

简介：Metalion-imprintedlycrosslinkedchitosanresin1andresin2werepreparedbytheuseofCu^2+andNi^2+astemplateionsandglutaraldehydeascrosslinkingagent,respectively,ThroughinvestigationontheadsorptioncapactiesandbindingconstantsforCu^2+,Ni^2+andCo^2+ionsonchitosanresins,resin1andresin2exhibittheadsorptionselectivityforthemixturesolutionof1L1Cu^2+andNi^2+ions.Theadsorptionselectivityofmetalion-imprintedresinsfortheirtemplateionsinmuchhigherthanthatofuncrosslinkedchitosanresin.

简介：Immobilizedtriazinedyeaffinitychromatographyhasbeenwidelyusedforproteinpurification.Inthispaper,CibacronBlueF3G-4wasimmobilized,throughaspacerarm,ontoarigidhydroplhilicporouspolymerbyreactinganepoxy-group-containingpoly(vinylalcohol)with6-aminohexyl-N'-CibacronBlueF3G-A,whichwasobtainedbyreactingCibacronBlueF3G-4withexcessof1,6-diaminohexane,inapH8.6buffer,Theepoxy-group-containingpoly(vinylalcohol)waspreparedbytreatingmacroporouspoly(vinylalcohol)withexcessepichlorohydrininthepresenceofNaOHindimethylsulfoxide.Themacroporouspoly(vinylalcohol)waspreparedbyhydrolysisofmacroporouscrosslinkedpoly(vinylacetate),whichwassynthesizedbysuspensioncopolymerizationofvinylacetateandtriallylisocyanurateinthepresenceofbutylacetateandn-heptaneasdiluents.TheCibacronBlueF3G-A-immobilizedpoly(vinylalcohol)waspackedinastainlesssteelcolumn(250×5mmI.D.)andthechromatographicbehaviorsofseveralproteins(cytochromec,lysozyme,bovineserumalbumin,insulin,andlactatedehydrogenase)weredetermined.

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简介：Opticallyactive(R)-(+)-2,2’-bis(2-trifluoro-4-aminophenoxy)-1,1’-binaphthylwaspreparedfrom1,1’-bi-2-naphthol.Theopticallyactivearomaticpolyimidewasalsosuccessfullysynthesized.Thisnewpolymerhasgoodsolubility,thermalstabilityetc.Itsspecificrotationwasfoundtobe+174°,anditschiropticalpropertywasalsostudied.

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

简介：Ourobjectivesweretodevelopanewchemicalmethodforthepolymerizationofpyrrole.CuCl2dissolvedinC2H5OHsolventisprimarilyusedfortheinitiationpolymerizationofpyrrole.ThepolymerswithdifferentyieldandconductivitywereobtainedbyraringtheinitialconcentrationofCu2+.TheinitialconcentrationsofCu2+variedfrom1.2×10-4moleto6.48×10-3moleCu2+with2.16×10-2molepyrrole.Thepolypyrroleobtainedwascharacterizedwithelementalanalyzer,XPS,IRspectroscopy,Four-pointprobeandSEM.

简介：Newmodelcompound1H,1′H-Bis（benz-Δ^4-imidazoline)2,2′-spiro-titaniumdichloridewaspreparedandthestructureofthecompoundwasdeterminedby1R,MSandelementaryanalysis.

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简介：ThispaperintroducedthesynthesisandpropertiesofIERbasedon2-hydroxyethylmethacrylate.ThederivativescontainingDEAE-,CM-,SO3Hgroupswerepreparedandtheirusesinbiochemistrywerestudies.

简介：Thecopolymerizationofp-diethynylbenzene（PDEB）withphenylacetylene（PhA）,4,4’-diethynylbiphenyl（DEBP）orm-diethynylbenzene（MDEB）arestudiedbyvaryingmoleratiosofmonomers.WhenthemoleratiosofPDEB/PhAarelessorequalto1/5,thecopolymersaresolubleandfusible,buttheothercopolymersareinsolubleandinfusible.Theresultsshowthatthegoodsolventofcross-linkedcopolymersisbenzeneandtheirsolubilityparameteris9.15cal0.5.cm（-1.5）.Andtheirswellability（θp）,Hugginsparameter（χ）,density(d425)andtheaveragemolecularweightsbetweencrosslinks（c）aremeasured.Itisfoundthatθpandcofcopolymersaregreaterbutd425islessthanthatofrespectivehomopolymers.IRspectrashowthatthecopolymershavetransoidconfigurationandsmallnumberofunreactedethynylgroupsexistinthecopolymers.Themechanismaboutthepolymerizationoracetylenicderivativesinitiatedby（Ph3P）2PdCl2isdiscussed.

简介：Fivenewopticallyactivepolyamides(PAs)6a-6ewerepreparedbydirectpolycondensationreactionof2-(1,3-isoindolinedione-2-yl)-glutaricacid4asanewchiraldiacidwithvariousaromaticdiamines5a-5einamediumconsistingoftriphenylphosphite(TPP),calciumchloride,pyridine(Py)andN-methyl-2-pyrrolidone(NMP).Thepolycondensationreactionproducedaseriesofpolyamids6a-6einquantitativeyieldswithinherentviscositiesof0.26-0.39dL/g.Theresultingpolymerswerefullycharacterizedbymeansof~1H-NMR,FT-IRspectroscopy,elementalanalysis,inherentviscosityandspecificrotation.Thermalpropertiesofthesepolymerswereinvestigatedusingthermalgravimetricanalysis(TGA)anddifferentialthermalgravimetry(DTG).PhthalimideringsasabulkypendentgroupinthepolymerchainsdisturbtheinterchainandintrachaininteractionsandmakethesePAsreadilysolubleinpolar,aproticsolventssuchasN,N-dimethylacetamide(DMAc),N,N-dimethylformamide(DMF),dimethylsulfoxide(DMSO),N-methyl-2-pyrrolidone(NMP)andsulfuricacid.

简介：Systematicstudiesonthetreatmentandreuseoftheacidindustrialwatewatercontainingsodium2-Naphthylsulfonate(β-salt)from2-NaphthanolproductionprocessbyND-910resin(madebyself)isreportedinthispaper.Undertheoperationconditionsofinitialβ-saltconcentrationof10000-25000mg/LandinitialCODCrof20000-40000mg/L,theremovalratesofSodium2-NaphthylsulfonateandCODCrareover95%andover89%,respectively.Theeffluentcanbedischargeddirectlyafterbiologicaldegradation.TheworkingsorptioncapacityofND-910Resinforβ-saltisover230g/kg.Analkali-waterwashprocedureisutilizedtoregenerateresinandthereclaimingrateofβ-saltisover98%.

简介：Wastewaterfromproductionprocessof2,3-acidwastreatedbyadsorptionusingmacroporousresinNDA-708.Afteronlyone-steptreatmentbyresinadsorption,removalefficiencyofthreekindsofnaphthalenechemicalswasabove99%;removaleficiencyofCODcrwasabove96%.Underproperoperatingcondition,desorptionefficiencywasaround100%.Therunningrecordsoftheindustrialfacilityshowedthatthenaphthlenechemicalsindesorptioneffluentcouldbereusedwithoutobviousinfluenceonthequalityoftheproduct.

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简介：Usingpolyvinylalcohol(PVA)asrawmaterialandvacuumpumpoilasoilphasemedium,PVA-basedmicrocarrierswerepreparedbysuspensionmethodThediametersofthebeadswere100-180μm.LO2cellswereculturedonPVA-basedmicrocarriersandcytodexⅢmicrocarriers.Morphology,attachmentandgrowthrateofLO2cellswerestudied.

简介：TiO_2-coatedpolystyrenenanoparticleswerepreparedinasimpleway.First,functionalPSparticlesweresynthesizedbycopolymerizingonekindofpolymerizablesurfactantwithstyrene.Thenthestabledispersionsofpolystyrenenanoparticleswereusedastemplates,andpolystyrenenanoparticleswerecoatedwithtitaniabyinsituhydrolysisoftetra-n-butyltitanate(TBT).Nosurfacetreatmentandcentrifugation/redispersioncycleprocesswereneededduringthewholeexperiment.IsolatedPSsphereswithuni...

简介：Fourkindsofpalladiumcatalystsdispersedonpoly-N-vinyl-2-pyrrolidonewerepreparedbyusingCH3OH-NaOH,NaBH4,H2OorCH3OH-H2Oasthereducingagentintheprocessofcatalystpreparation.ThecatalystswerecharacterizedbyXPS,TEM,XRDandusedforthehydrogenationofmethylacrylate.Itwasfoundthatthevalencestateofpalladiumanddistributionofpalladiumparticlesaswellasthehydrogenationrateweregreatlyaffectedbythereducingagent.ThebestevenlydispersedpalladiumcatalystshowinghighhydrogenationactivitywaspreparedusingCH3OH-NaOHasthereducingagent.