简介：TheA-Bblockcopolymerof0634-chloroethylglycidyletherwithstyrenecanbegotbytheeasymethodofone-steppolymerization.ThestructureofA-Bblockcopolymerwasconfirmedbytheelementaryanalysis,turbiditytitration,molecularweightmeasurement,IR-spectra,13C-NMR,1H-NMRandDTAinvestigationoftheproducts.Also,theeffectsofsolvents,reactiontimeandtemperatureonthecomposition,Mnandyieldofcopolymerhavebeenstudied.

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简介：我们为达到块共聚物(BCP)的底部形态学表明一条一般途径薄电影。在我们PS-b-PMMA电影上的以前的大小，BCP电影的表面形态学地图揭示了在哪儿的不同订的政体对接口和这些形态学共存的中间的政体主要垂直或平行的柱体东方。然而，这个更早的工作没探索BCP薄电影的底部形态学。在这研究，我们在在表面上有垂直柱体形态学的演员组块共聚物电影在稳固的底层附近调查了块共聚物形态学。

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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：Theinsertionof1,1-bis(1′-naphthyl)ethylenemonomerunitintotheactivepolystyrenechainendgreatlydecreasedthereactivityoftheactivechainendtothecarbonylgroup,andallowedthepolymericchainendtoreactonlywiththedoublebondinN-methacryloylcaprolactam,resultinginN-acylcaprolactamfunctionalizedpolystyrenein100%conversion.Newdiblockcopolymerofpolystyrenewithpolycaprolactamwassynthesizedbydirectreactionofthefunctionalizedpolymerwithcaprolactamwithoutaddingadditionalalkalimetalortheircaprolactamsalts.

简介：双人脚踏车催化系统，由乙烯二度(indenyl)组成有二不同cocatalysts，alkylaluminum(diethylaluminium氯化物或trialkylaluminum)和methylaluminoxane的锆二氯化物，在作为唯一从乙烯准备分叉的聚乙烯被采用单体。催化系统racet(Ind)2ZrCl2/AlEt2Cl/MAO展出了高加入(29.0/1000C)。oligomerization和copolymerization反应在双人脚踏车调节催化系统，以及不同cocatalysts，在催化活动和获得的聚合物的性质有效果例如融化温度，crystallinity，分子的重量和分子的重量分发。而且，oligomerization反应条件是在改变聚乙烯的性质和结构的主要因素。

简介：块共聚物平版印刷术为patterningnanoscale作为领先的技术之一正在出现稠密的特征。在这种技术的几乎所有潜在的应用程序，对圆柱、薄片状的域的取向的控制从块共聚物电影为模式转移被要求。这评论加亮刷子的state-of-art发展修改底层在电影控制块共聚物的集会行为。对自我装配的单层，聚合物刷子和地席的发展的选择重要贡献，和化学上有图案的刷子被讨论。

简介：Thechaindynamicsofapairofdiblockpoly(styrene-b-butadiene)(PS210-b-PB960)andtriblockpoly(styrene-b-butadiene-b-styrene)(PS200-b-PB1815-b-PS200)copolymersinbothdiluteandsemidilutetoluenesolutionshasbeencomparativelystudiedbydynamiclaserlightscattering.Asexpected,themutualdiffusionofindividualchainchangesintoafastcooperativediffusionofthechainsegments('blobs')betweentwoneighboringentanglementpointsforboththecopolymersasthesolutionchangesfromdilutetosemidilute.Furtherincreasesoftheconcentrationleadtoasecondslowrelaxationmode.Forthetriblockchains,thereexistsanadditionalmiddlerelaxationbetweenthefastandtheslowmodes.with0.33＜α＜0.44,muchsmallerthan0.75predictedor0.72observedforlinearhomopolymerchainsingoodsolvent.ItimpliesthatthesolventqualityoftolueneforPBmightnotbeasgoodasthatforPS.Duetosuchadifferenceinsolubility,itisreasonabletospeculatethatthePBandPSblocksaretransientlysegregatedinsemidilutesolution.TherelaxationofthesetransientPBandPSricherdomainsleadstotheobservedslowrelaxation.Suchaspeculationissupportedbytheappearanceofanadditionalslowrelaxationmodeinthestudyofpolyisoprene-b-polystyrene-b-polyisopreneinsemidilutesolutionincyclohexane,anon-selectivesolvent,inwhichwealternatedthesolubilitydifferencebyavariationofthesolutiontemperature.

简介：Lamellarcrystalsofdiblock,triblockandfour-armpoly(ethyleneglycol)-b-poly(ε-caprolactone)(PEG-b-PCL)crystalline-crystallinecopolymersweresuccessfullyobtainedfromtheirsolution.Morphologyandstructureoflamellarcrystalsofcrystalline-crystallinecopolymerswereinvestigatedusingtapping-modeatomicforcemicroscopy(AFM)andselectedareaelectrondiffraction(SAED).Allofthesesamplesshowedthetruncated-lozengemultilayerbasalshapeswithcentralscrewdislocationorcentralstack,whichwereallobtainedsimultaneouslyfromtheoilbath.ThediffractionpatternofPEGblocklamellarcrystalisattributedtothe(120)diffractingplanesandthepatternofPCLblocklamellarcrystalisattributedtothe(110)diffractingplanesand(200)diffractingplanesaccordingtotheSAEDresults.Four(110)crystalgrowthplanesandtwo(200)crystalgrowthplanesarediscoveredforthePCLblocks,butthe(120)crystalgrowthplanesofPEGblocksarehidedinthefigureofAFM.Thecrystallinestructureofthefour-armcopolymers(FA)ismoredisorderandconfusedthanthatofthediblock(DI)copolymerandthestriatedfoldsurfacestructuresoflamellarcrystalsoffour-armcopolymers(FA)aresmootherthantheseoflinearanalogues,owingtotheconfusedcrystallizationofblockscausedbythemutualrestrictionofblocksandthehindranceofthedendriticcores.Inaddition,theaspectratioofFAisgreaterthanthatoftheothers.Itishypothesizedthattherearetworeasonsforthechangeofaspectratios.First,the(200)diffractingplanesofPCLcrystalsgrewslowlycomparedtotheir(110)diffractingplanesbecauseofdifferenceintheenergybarrier.Secondly,edgedislocationsonthe(200)diffractingplanesarealsoresponsibleforthevariationoftheaspectratio.Consequently,thecrystallinedefectsareaugmentedbythecompetingblockscrystallizedsimultaneouslyandthehindranceofthedendriticcores.

简介：BymeansoftheintensitytheoryofX-rayscatteringandthetwo-phaseconceptofhighpolymer,thebasicformulaofthecrystaUinityinblockcopolymershasbeenproposedafterthecorrectionsofatomic,temperature,absorption,Lorentzandpolarizationfactor.Applicationofthismethodtodifferenttypepoly(oxyethylene-styrene)blockcopolymersandthesametypeblockcopolymerswithdifferentEOcontentsindicatesthatthecrystallinityinpoly(oxyethylene-styrene)blockcopolymersincreaseswiththeincreaseoftheEOcontentanddecreasesintheorder:PEO-PS-PEO>PEO-PS>PS-PEO-PS.

简介：Asimpleone-potnon-isocyanaterouteforsynthesizingthermoplasticpolyureasispresented.Insituurethanizationwasconductedfromthering-openingreactionofethylenecarbonatewithpoly(propyleneglycol)bis(2-aminopropylether)andhexanediamine,m-xylylenediamine,ordiethyleneglycolbis(3-aminopropyl)etherat100℃for6hundernormalpressure.Melttransurethanepolycondensationwassuccessivelyconductedat170℃underareducedpressureof399Pafordifferenttimeperiods.Aseriesofnonisocyanatethermoplasticpolyureas(NI-TPUreas)wereprepared.TheNI-TPUreaswerecharacterizedbygelpermeationchromatography,FTIR,1H-NMR,differentialscanningcalorimetry,thermogravimetricanalysis,wide-angleX-raydiffraction,atomicforcemicroscopy,andtensiletest.NI-TPUreasexhibitedMnofupto1.67×10^4g/mol,initialdecompositiontemperatureover290℃,andtensilestrengthofupto32MPa.SeveralcrystallizableNI-TPUreasexhibitedTmexceeding98℃.NI-TPUreaswithgoodthermalandmechanicalpropertieswerepreparedthroughagreenandsimpleone-potnon-isocyanateroute.

简介：开车的听氧协作自己组装在包含organotin的块共聚物被开发，它被激进的增加部分转移(木排)准备方法并且由胶化浸透层析(GPC)并且<描绘了啜class=“a-plus-plus”>1H-NMR。并且有在在CHCl的不同集中的各种各样的链长度比率的这些块共聚物的self-assemblies<潜水艇class=“a-plus-plus”>3根据DLS和TEM的结果是稳定的。另外，它也在规定上被给卓见调查由补充说dibutyltin二氯化物和可能的机制被建议的块共聚物自己组装。

简介：One-stepreactioncompatibilizedmicrofibrillarreinforcediPP/PETblends(CMRB)weresuccessfullypreparedthrougha'slitextrusion-hotstretching-quenching'process.CrystallizationbehaviorandmorphologyofCMRBweresystematicallyinvestigated.Scanningelectronicmicroscopy(SEM)observationsshowedblurryinterfaceofcompatibilizedcommonblend(CCB).ThecrystallizationbehaviorofneatiPP,CCB,microfibrillarreinforcediPP/PETblend(MRB)andCMRBwasinvestigatedbydifferentialscanningcalorimetry(DSC)andpolarizedopticalmicroscopy(POM).TheincreaseofcrystallizationtemperatureandcrystallizationrateduringnonisothermalcrystallizationprocessindicatedbothPETparticlesandmicrofibrilscouldserveasnucleatingagentsandPETmicrofibrilsexhibitedhigherheterogeneousnucleationability,whichwerealsovividlyrevealedbyresultsofPOM.ComparedwithMRBsample,CMRBsamplehaslowercrystallizationtemperatureduetoexistenceofPETmicrofibrilswithsmalleraspectratioandwiderdistribution.Inaddition,sinceinsitucompatibilizertendstostayintheinterphase,itcouldalsohinderthediffusionofiPPmoleculestothesurfaceofPETphase,leadingtodecreaseofcrystallizationrate.Two-dimensionalwide-angleX-raydiffraction(2D-WAXD)waspreformedtocharacterizethecrystallinestructureofthesamplesbyinjectionmolding,anditwasfoundthatwell-developedPETmicrofibrilscontainedinMRBsamplepromotedformationofβ-phaseofiPP.

简介：Wepresentamicrowave-assistedone-potpolymerizationwiththree-componentsofalkynes,aldehydesandaminesforthesynthesisofnewamino-functionalizedoptoelectronicpolymers.Thepolymerizationofdiynes（1a-1c）,dialdehydes（2aand2b）anddibenzylaminecatalyzedbyInCl3wascarriedoutsmoothlywithin1hundermicrowaveradiation,yieldingfoursolublepolymerswithhighmolecularweights.TheresultingpolymersP1andP2couldbeeasilydissolvedinalcoholandthusutilizedasthecathodeinterlayerforpolymersolarcells（PSCs）.Comparedwiththecontroldevice,thePSCswithP1andP2asthecathodeinterlayerandPTB7-Th:PC71BMasthephotoactivelayerexhibitedsignificantlyhigherpowerconversionefficiencies（PCEs）of9.49%and9.16%,respectively.Theseresultssuggestthatthispolycouplingreactionisanefficientapproachtoconstructthree-componentpolymersforthepracticalapplications.