简介：Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/Organophilicmontmorillonite(PHBV/OMMT)nanocompositeswerepreparedandthebiodegradabilityofthePHBV/OMMTnanocompositeswasstudiedbyacultivationdegradingmethodinsoilsuspension.TherelationshipbetweenstructureandbiodegradabilityofPHBV/OMMTnanocompositeswasinvestigated.TheresultsshowedthatthebiodegradabilityofPHBV/OMMTnanocompositesdecreasedwithincreasingamountofOMMTanditwasrelatedtothenumberofPHBVdegradingmicroorganismsindegradationenvironment,theanti-microbialpropertyofOMMTandthedegreeofcrystallinityofthenanocomposites.

简介：TheencapsulationofstearicacidcoatednanometerCaCO3byapolystyrene(PS)networkviaemulsionpolymerizationisdescribed,whereγ-methacryloxypropyltrimethoxysilane(MPS)wasusedasanefficientcrosslinker.TheimportantfactorssuchasthetypeandamountofsurfactantandinitiatorandthecontentofCaCO3areinvestigatedaswellastheroleofMPS.IthasbeenshownthatlittlePSwasextractablewithonly0.6wt%ofMPS(relativetostyrene).Thecationicsurfactantcetyltrimethylammoniumbromide(CTAB)provedmoreeffectivethantheanionicsurfactantsodiumdodecylsulfonate(SDS).Theyieldrises,particlesbecomesmallerandsizedistributionbroadenswithincreasedamountofCTAB.Itisalsofoundthateither2,2′-azobis(isobutyronitrile)(AIBN)orammoniumpersulfate(APS)issuitableforattaininghighmonomerconversion.WithincreasedamountofCaCO3,theencapsulationratiocanbevariedfrom17.9to3.6,whilemonomerconversionandyielddecreaseslightly.FT-IRspectraoftheproductsafterextractionindicatetightencapsulationbetweenPSandCaCO3,andTEMphotographsofcompositeparticleswithwell-definedcore-shellstructuregivedirectevidenceofencapsulation.

简介：The1,1'-binaphtholbasedoligomers3and7with3,3'-acetylene-phenylene-acetylenespacerwerepreparedfromBINOL1.ThehighopticalrotationvalueandCDspectrademonstratedthemainchainchiralityoftheoligomermolecule.TheUV-VISandfluorescentspectraevidencethecharacteristicsofconjugatedstructure.Incomparisonwitholigomer2bearing3,3'-acetylenespacer,theoligomers3and7havelongerefficientconjugationsegment,andtheirfluorescentquantumyields(φ)increased(0.60-0.65versus0.14).Extendingtheeffectiveconjugationsegmentwouldimprovethephotophysicalpropertiesofchiralconjugatedpolymers.``

简介：Theeffectsofinterfacialmodifieronthemechanicalpropertiesofkaolin-filledpolyamide6(PA6)havebeenstudied.Theinterracialinteractionbetweenpolyamide6andkaolinhasbeencharacterizedbymeansofinfraredspectroscopy(IR)andscanningelectronmicroscopy(SEM).TheresultsshowthattheroleoftheinterracialmodifierliesinforminganelasticinterlayerwithgoodadhesionbetweenkaolinandPA6.Acompositewithhighimpactstrength,hightensilestrengthandhighelasticmoduluscanbeobtainedbyinsertingtheelasticinterfacialmodifierintotherigid-particle-filledpolymersystem.

简介：Blendsofpoly(3-hydroxybutyrate-co-3-hydroxyhexanoate)(PHBHHx)andpoly(butylenesuccinate-adipate)(PBSA),bothbiodegradablesemicrystallinepolyesters,werepreparedwiththeratioofPHBHHx/PBSArangingfrom80/20to20/80bymeltmixingmethod.Differentialscanningcalorimetry(DSC),thermogravimetryanalysis(TGA),dynamicmechanicalthermalanalysis(DMA),polarizingopticalmicroscopy(POM)andwideangleX-raydiffractometer(WAXD)wereusedtostudythemiscibilityandcrystallizationbehaviorofPHBHHx/PBSAblends.ExperimentalresultsindicatethatPHBHHxisimmisciblewithPBSAasshownbythealmostunchangedglasstransitiontemperatureandthebiphasicmelt.

简介：Inthispaper,thetwoeffluentsfromPBA(3-phenoxy-benzaldehyde)productionprocessweretreatedbypolymericadsorbentCHA-111.PBAorPBC(3-phenoxy-benzoicacid)wasrecoveredfromthewastewaterintheprocessofneutralization.Asasecondarytreatmentmethod,adsorptionwithCHA-111showedbetterefficiencythanphotocatolyticdecompositionandsolventextraction.Theoptimaltechnologicalparameterswere:adsorption:currentvelocity:2.0BV/hr(bedvolumeperhour),roomtemperature;desorption:currentvelocity:2.0BV/hr(bedvolumeperhour),roomtemperature;desorption:currentvelocity:1.0BV/hr,80℃,8%sodiumhydroxideaqueoussolutions.Inconclusion,99.9%CODintheneutralizingwastewaterand98.4%CODinthehydrolysiswastewaterareremovedsuccessfully.

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

简介：Thispaperintroducesanimprovednewmethodwhichisusedtorecoversilverassilvernitratebyionexchangefromthewasters.Inthismethod,wecanrecoversilvernitrate,onlybyusingakindofionexchangeresinandtwoionexchangeprocesses.Itcanreplacetheoriginalrecoverymethodinwhichtwokindsofionexchangeresinsandthreeionexchangeprocessesareneeded.Theresultissatisfied

简介：FirstCircular/Pre-registration(e-mailedition)July14-18,2003KanazawaInstituteofTechnology,Nonoichi,IshikawaPref.,JAPANOrganizedbyJapanAssociationofIonExchange(JAIE)INVITATIONOnbehalfoftheJapanAssociationofIonExchange(JAIE),the3rdInternationalConferenceonIon

简介：Anewkindofmonomerswassuccessfullysynthesizedbythereactionbetween2-chloromethylcycloketalandtrimethylsilylcyanide,followedbyringclosureanddehaiogenation.Polymerizationsofthemonomerswerecarriedoutinbenzenesolutionat80℃withbenzoylperoxideasinitiator.BoththestructuresofmonomersandpolymerswerecharacterizedbyIR,1HNMR,13CNMRandelementalanalysis.

简介：TheNdCl3/MgCl2bisupportedcatalystwaspreparedbyusingNdCl3,MgCl2,（CH3）2（CH2）2OHandTiCl4.ItisshownthatthestructureofbisupportedcatalystwasdifferentfromthoseofeitherNdCl3orMgCl2singlesupportedcatalyst.Apeculiartypeofkineticcurveforethylenepolymerizationwasfound.

简介：Segmentedblockcopolymerbasedonnylon6(N6)andpolyethyleneoxide(PEO)withstochiometricratiowassynthesizedviaatwo-stepprocess.ThefirststeprepresentsendcappingofN6inthepresenceofadipicacidleadingtocarboxyterminatedN6,andthesecondoneispolycondensationofthelatterproductwithPEOinthepresenceofcatalystandthermostabilizertoformahighmolecularweightmulti-blockcopolymer.SeveralmethodswereappliedtocharacterizethesynthesizedcopolymersuchasFouriertransforminfraredspectroscopy,protonnuclearmagneticresonancespectroscopy,differentialthermalanalysis,differentialscanningcalorimetry,X-raydiffractionandatomicforcemicroscopy.Theobtainedresultsconfirmedthemulti-blockstructureforcopolymerwithaveryhighdegreeofmicro-phaseseparation.Atomicforcemicroscopymicrographsindicatedthatthemorphologywasthedispersionofhighstiffnessnanostructuredpolyamide(PA)domainsintheamorphousregionofPEOmatrix,whichcanbeveryimportantintheirperformanceformembraneprocesses.

简介：包含磷氮(MSMM-Al-P)的新奇包含的火焰retardant被与聚酰胺66包含准备(PA66-MSMM-Al-P)为聚酰胺6的火焰延迟(PA6)。结构和PA66-MSMM-Al-P的热性质被Fourier变换红外线的光谱学，X光检查光电子光谱学和thermogravimetric分析描绘。包含火焰retardants(MSMMAl-P和PA66-MSMM-Al-P)的PA6易燃被限制的氧索引测试，垂直燃烧测试和锥热量计调查。火焰retardancy和锥calorimetric分析在flame-retardantPA6建议了在PA66和MSMM-Al-P之间的synergistic效果。flame-retardantPA6的热稳定性也被调查。

简介：Conventionalchloromethylation,paraformaldehyde/hydrogenchlorideinaceticacidmedium,wasappliedto1,2-dimethoxybenzene.Chloroform-solublepoly(3,4-dimethoxy-o-tolylene)wasobtainedwithanintrinsicviscosityof0.034dLg~(-1).ThepolymerwasevaluatedasacondensationredoxpolymerprecursorformedbyaFriedel-Craftsreaction.Cleavageofthemethoxygroupspresentinthispolymerresultedinpoly(3,4-dihydroxy-o-tolylene)whichmanifestedagreatair-oxidationresistance.Theredoxpropertyofthelatterpolymerwasfoundtobe1017mVbypotentiometrictitrationwith0.05Ncericammoniumnitrateat25℃.Thismidpotentialwascomparedtothatofcatechol,amonomericanalogue,underthesametitrationconditions.

简介：TheconductivitybehaviorofAl(OH)3-acrylamidehybridpolyacrylamide(hybridPAAm)indistilledwaterwasstudied.Adiscontinuityphenomenonoftheconductivity(k)versusconcentration(c)curveofthehybridPAAminacertainconcentrationregimeisfound.ThisphenomenonisdependentonthemolecularweightofthehybridPAAmandontheparticlesizeandcontentoftheAl(OH)3colloidinthehybridPAAm.ThisphenomenonwasaccountedforassumingionizationofthehybridPAAm.

简介：基于的二naphthalimide的技术性质分散尼龙6上的染料和聚酯纤维面对脲被调查。基于的二naphthalimide驱散染料被综合。染料被净化然后充分描绘了使用1H-NMR，FTIR和融化的点分析。染料的分散在水里被准备并且在尼龙6上适用并且宠物纤维。染料在底层上提供了好逐渐增加性质。为了增加，染底层的吸附，脲被增加进dyebath。由增加脲，聚酯的染料吸附显著地被增加，当尼龙6的增加是不显著的时。染料在底层上显示出好迅速性质。

简介：PolysaccharidecoatedPLAnanoparticlesbearingaldehydegroupswerepreparedbydialysisofDMSOsolutionofcholesterolhydrophobic-modifieddextranpolyaldehydeandPLAagainstwater.Theaveragediameterofthenanoparticleswasabout160nm,andthesizedistributionwasnearlyhomogenous.ThenanoparticleswerefunctionalizedsimultaneouslywithCD71andEGFRantibodythroughtheSchiff'sbasereaction,andthenradiolabeledwith~(99m)Tc.Afterperfusedtheradiolabelednanoparticlesintotumor-bearing...

简介：Insitucompatibilizationoflowdensitypolyehylene(LDPE)(30%)andnylon-6(70%)blendsthroughone-stepreactiveextrusionusingt-BuOOHasaninitiatorandlowmolec-ularweightinterfacialagentsascompatibilizerswasstudied.Thecompatibilizercontainedalongchainbydrocarbon,doublebondandtwopolarfunctionalgroupswhichwascapableofreactingwithbothLDPEandnylon-6inthepresenceofinitiatortoformacopolymerattheinterfaceofthetwopolymerphases.Theextrudedblendsexhibitedsignificanten-hancementintheircompatibilitybasedonmorphological,thermalanalysisandmechanicalstudies.Theeffectofthehydrocarbonchainlengthandstructureofthefunctionalgroupofthecompatibilizerwasalsoexamined.Itwasfoundthatblendspreparedbyusingthecompatibilizercontaininglongerhydrocarbonchainandamidegrouphadbettermechanicalproperties.

简介：TheeffectsofHDPEmatrixtoughnessonthebrittle-ductiletransitionofHDPE/CaCO3blendsareinvestigated.NotallHDPEcanbetoughenedbyCaCO3particles.TheabilityofthematrixtoyieldplaysafundamentalroleindetermingwhetherHDPEcanbetoughenedornot.Thereexistsacriticalmatrixtoughness(Isc≈45J/m)belowwhichHDPEcannotbetoughenedobservablybyCaCO3particleatgivenaveragesize,andabovewhichthecriticalmatrixligamentthickness（τ?）isproportionaltomatriximpactstrength.

简介：Thechemicalgraftingofthiolterminatedpoly（sodiumstyrenesulfonate）（HS-PSSS）chainsfromsodiumnitrate（NaNO3）saltsolutiontoagoldsurfacewasinvestigatedwithaquartzcrystalmicrobalancewithdissipationmonitoring（QCM-D）indifferentsaltconcentrations.ItwasfoundthatatlowsaltconcentrationgraftingdensityofHS-PSSSwaslowandthegraftedchainsadoptedamushroomconformation.Withtheincreaseofsaltconcentrationpolyelectrolytechainsunderwentatransitiontowardcoiledstateduetoreductionofelectrostaticrepulsionandasaresultmorechainsweregraftedonthesurface.WhenthegraftingdensityreachedacertainlimitafterwhichfurthergraftingcausedrepulsionbetweenalreadygraftedHS-PSSSchainsandasaresultgraftedchainsadoptedabrushconformation.