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简介：The1stphaseprojectofSanmenNuclearPowerStationinsupportofindependentdevelopmentwasoverallinitiatedinApril.

简介：Twoiron-arenecomplexphotoinitiatorswithdifferentsubstituentsinareneligandsweresynthesized,theiractivitiesininitiatingphotopolymerizationofcyclohexeneoxide(CHO)werecomparedwiththatofIRGACURE261,acommercializedphotoinitiatorfromCiba-Geigy.Ahigheractivitywasfoundwhentheareneligandwassubstitutedwithastrongerelectrondonatinggroup.ForthesysteminitiatedbyIRGACURE261theconcentrationofactivecentersinCHOpolymerizationwasdeterminedanditwasfoundthattheconcentrationismaximumataround35℃.Thepost(dark)polymerizationwassignificant,thepolymerizationyielddecreasedwiththeincreaseofirradiationtemperatureandincreasedwiththeincreaseofpostpolymerizationtemperature.TheresultsareinterpretedbasedonthemechanismproposedbyLohse,etal..

简介：Thereactionofdifluorodiiodomethanewithalkynes(4a-e)inthepresenceofhydrogenperoxideaffordedthecorrespondingβ-iodo-α,β-unsaturatedcarboxylicacids.Whenpropargylicalcoholwasusedasthesubstrate,β-iodo-α,β-unsaturatedγ-butyrolactone(5f)wasproduced.Themechanismofthereactionwassuggested.

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：ＲＡＤＩＣＡＬ　ＰＯＬＹＭＥＲＩＺＡＴＩＯＮ　ＯＦ　ＶＩＮＹＬ　ＭＯＮＯＭＥＲ　ＩＮＩＴＩＡＴＥＤ　ＢＹ　ＣＥＲＩＣ　ＩＯＮ／ＴＡＲＴＡＲＩＣ　ＡＣＩＤＲＡＤＩＣＡＬＰＯＬＹＭＥＲＩＺＡＴＩＯＮＯＦＶＩＮＹＬＭＯＮＯＭＥＲＩＮＩＴＩＡＴＥＤＢＹＣＥＲ...

简介：Theadditionofsodiumperfluoroalkanesulfinates（RFSO2Na）tovariousolefins（CH2=CHR）initiatedbyFentonreagent(Fe2+-H2O2)inthepresenceofsodiumazidegavetheadduetsRFCH2-CHN3Ringoodyield.AradicalmechanismwasproposedbasedontheEPRandotherevidences.TheadductswerereadilyreducedthroughcatalytichydrogenationtogivethecorrespondingaminesRFCH2CH（NH2）Rinhighyield.Thereactionrepresentsaconvenientandeffectiveroutetotheseusefulorganofluorinecompounds.

简介：Anovelatmosphericplasmadevicedevelopedinthispaper,whichismoreeffectiveandconvenienttostudytheplasma-initiatedpolymerization(PIP)thanconventionalsetup.Thestructureandmechanismofthedeviceisintroduced.Someplasma-initiatedpolymerizationexperimentsarecarriedoutonthedevice,andtheconversionofAA(Acrylicacid)andAM(Acrylamide)atmospheric(N2)plasmapolymerizationarerespectively89%and94%after120hpostpolymerization,wherebyIRspectraoftheproduct(AA,AM).OurPIPresultareconfirmed.

简介：ＡｎｏｔｈｅｒＧｒａｎｄＥｖｅｎｔｏｆＴｉｂｅｔａｎＢｕｄｄｈｉｓｍ──Ｔｈｅ１１ｔｈＢａｉｎｑｅｎＥｒｄｅｎｉＩｎｉｔｉａｔｅｄＩｎｔｏＭｏｎｋｈｏｏｄＨＵＡＺＩＴｈｅ１１ｔｈＢａｉｎｑｅｎＥｒｄｅｎｉ，ｃｏｎｆｉｒｍｅｄｔｈｒｏｕｇｈｔｈｅｍｅｔ...

简介：Anewallylnickel(II)complex([S(R)]-N-[(1S)-2-(diphenylphosphino)-1-phenylethyl]-2-methyl-2-propanesulfinamide)(2,2,2-trifluoroacetato-kO)(p-allyl)nickel(2)wasdesignedandpreparedbyusingchiralphosphine.2wasrevealedtoefficientlyinitiatethepolymerizationofL-andD-N-(1-(dodecylamino)-1-oxopropan-2-yl)-4-(propa-1,2-dien-1-yloxy)-benzamide(L-1andD-1)inaliving/controlledchaingrowthmanner.PolymerizationkineticsofL-1andD-1indicatedthatL-1preferentiallypolymerizedovertheantipodeD-1byafactorof1.9.Inblockcopolymerizationofrac-1usingthepoly-L-150asthemacroinitiator,thepolymerizationproceededinenantiomer-selectivemanner.Itwasfoundthatenantiomericexcess(ee)valueoftherecoveredmonomerincreasedwiththemonomerconversionandfinallyreachedtothemaximumof34%.Theseresultssuggestthischiralphosphinecomplexexhibitsenantiomer-selectivityforthepolymerizationofchiralallenederivativemonomer.

简介：ReactionofperfluoroalkyliodideswithaseriesofalkynesundersulfinatodehalogenationconditiongaveamixtureofE/Zadductsveryreadilyinhighyield,thusconstitutedamild,convenientandeffectivenewmethodfortheadditionofperfluoroalkyliodidestoalkynes.Underthesamecon-dition,inthepresenceof1-hexyneperfluoroalkylbromideand1,1,1-trichlorotrifluoroethanereactedonlytogivesulfinatesasthemajorproducts.Aradicalmechanismwasproposedfortheadditionreaction.

简介：Theaqueouspolymerizationofmethylmethacrylateintiatedbycopperpolypropylene-basedpoly(oxime-imidodiacetate)(P-Cu)-sodiumsulfitesystemhasbeeninvestigated.Theoverallrateofpolymerization(Rp)wasfoundtobeRp=5.8×10^12e^-84.1KJ/RT[MMA]^1.4[P-Cu]^0[Na2SO3]^0.50Amechanismof“coordination-protontransfer”fortheproductionofinitiatingspecieswasproposedanddiscussed.

简介：Thesolubilityofinitiatordeterminesitsdistributionandtherolesplayedinemulsionpolymerizationaswellasthefinalproducts,butthisisstilllackofsystematicinvestigation.Thepresentworkfocusesonthisissuebycomparingthekineticbehaviorsandproductpropertiesofstyreneemulsionpolymerizationinitiatedby2,2-azoisobutyronitrile(AIBN)andpotassiumpersulphate(KPS).ComparedtoKPS-initiatedemulsionpolymerization,theAIBN-initiatedpolymerizationwasfoundtobeinsensitivetothetypeofemulsifier,andhavehighpolymerizationrateaswellasnarrowmolecularweightdistributionandparticlesizedistribution.Thisresultindicatestheeffectivefreeradicalsaregeneratedinmicellesorcolloids,whichcoulddecreasetheproportionofhomogeneousnucleationandmaketheprocessandproductmorecontrollable.Asaconsequence,thereisalinearrelationshipbetweenmolecularweightofproductandAIBNconcentrationinlg-lgcoordinate.Itprovidedareferenceforthepreparationoflatexeswithspecifiedmolecularweightandsupportedthepossibilityofthecoexistenceofmultiplefreeradicalsinonemicelleorcolloidwhenusingoil-solubleinitiator.

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

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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：(N-isopropylacrylamide)(PNIPAAm)Thermoresponsivepoly刷浓密地grafted到经由开始表面的原子转移激进分子聚合(SI-ATRP)的硅石表面上。grafting反应在2-propanol从2-bromoisobutyratefunctionalized硅石粒子的表面开始了在用CuCl/CuCl2/N的周围的温度的水的答案，N，N，N，N-pentamethyldiethylenetriamine(PMDETA)作为催化系统。把分析(TGA)基于thermogravimetric结果，grafting数量和硅石的表面上的PNIPAM链的grafting密度被计算分别地是1.29mg/m2和0.0215chains/nm2。胶化浸透层析(GPC)结果显示出相对狭窄的分子的重量分发(Mw/Mn=1.21)graftedPNIPAAm。修改硅石粒子作为包装材料成功地作为活动用水分开三芳香的混合物的高效的液体层析(HPLC)被使用由改变列温度的阶段。硅石粒子上的PNIPAAm刷子grafted的温度依赖者吸水/恐水病的性质改变与在静止阶段和analytes之间的色析法的相互作用被决定。保留时间被延长，分辨率与增加温度被改进。有在相对低的温度的高分辨率的基线分离被观察，证明稠密的PNIPAAm刷子是硅石表面上的grafted。

简介：Inthisstudy,nano-polyanlineandmanganeseoxidenanometertubularcomposites(nano-PANI@MnO2)werepreparedbyasurfaceinitiatedpolymerizationmethodandusedaselectrochemicalcapacitorelectrodematerials;andtheeffectofanilineamountonthemicrostructureandelectrochemicalperformancewasinvestigated.Themicrostructuresandsurfacemorphologiesofnano-PANI@MnO2werecharacterizedbyX-raydiffraction,scanningelectronmicroscopyandfouriertransformationinfraredspectroscope.Theelectrochemicalperformanceofthesecompositematerialswasperformedwithcyclicvoltammetry,charge–dischargetestandelectrochemicalimpedancespectroscopy,respectively.TheresultsdemonstratethatthefeedratioofanilinetoMnO2playedaveryimportantroleinconstructingthehierarchicallynano-structure,whichwould,hence,determinetheelectrochemicalperformanceofthematerials.UsingthetemplateassistedstrategyandcontrollingthefeedratioofanilinetoMnO2,thenanometertubularstructureofnanoPANI@MnO2wasobtained.Amaximumspecificcapacitanceof386F/gwasachievedinaqueous1mol/LNaNO3electrolytewiththepotentialrangefrom0to0.6V(vs.SCE).