简介：Thephotoinitiatingsystemcomposedof1-ethyl-3’-methylthiacyaninebro-mide(C-I),2-chlorohexaarylbiimidazole(o-Cl-HABI)and3-mercapto-4-methyl-4H-1,2,4-triazole(MTA),whichactassensitizer,initiatorandhydrogen-donorrespectively,canbeusedtoinitiatethepolymerizationofmethylmethacrylate(MMA).Thekineticstudywascarriedoutintrichloromathanesolutionat30℃byusingdilatometry.Therelationbe-tweenthepolymerizationrateandtheconcentrationsofC-I,o-Cl-HABI,MTAandMMAwasstudied.

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

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

简介：LigandeffectofthecatalyticsystemWCl6-Et2AlClforringopeningmetathesispolymerization(ROMP)ofdicyclopentadiene(DCPD)wasinvestigated.Theexperimentalresultsshowthataddingstericallyhinderedphenol-2.6-di-tert-butylcresylol(DTBC)inthecatalyticsystemnotonlycanobviouslyincreasethemonomerconversionofpolymerizationbutalsoimprovethemechanicalproperties,suchasnotchedimpactstrength(NIS),tensilestrength(TS)ect.,ofthesynthesizedpolydicyclopentadiene(PDCPD),Asimilareffectcanbeobservedbyusingastericallyhinderdpolymericphenol-linearphenolformaldehyderesin(LPF)asaligand.