简介：Thesolid-phasesynthesisofisoxazolineson2-polystyrylsulfonamidoethanolresinisreported.2-Polystyrylsuifonamidoethanolresin1wasreactedwithacryloylchloridetoafford2-polystyrylsulfonylamidoethylacrylateresin2,whichwasfurtherreactedwithbrominatedaldoximesby[3+2]cycioadditiontogiveisoxazolineresin4.Resin4wastreatedwithaqueous6mol/LHCIsolutiontoobtainisoxazolinesingoodyieldandpurity.

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简介：PolymerPhysicsLaboratory,InstituteofChemistry,TheChineseAcademyofSciences,Beijing100080,China

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简介：Aromaticaminecompoundsandtheirderivativesareimportantintermediatesoffinechemicalslikedyeandmedicine.Theformerhydrogenationcatalysthasmanyproblems,suchasenvironmentpollutioncausedbyoldtechnology,strictreactioncondition,complicatedequipment,badpropertyofcatalystandsoon.Holy[1]firstlyreportedthehydrogenationofnitrobenzeneonmodifiedpolystyrenePdcatalyst.Buthowtoimprovetheactivity,selectivityandstabilityofthepolymersupportercatalystneedstostudyfurther.Wepreparedaseriesofpolymersupportedcatalystsbythemethodsofadsorptionandmechanicalmixting,selectedahighactivecatalystPd-AH-1byobservingthehydrogenationofnitrobenzene.

简介：AuseofSulfonateesterasalinkerinsynthesisofω-aminoalkanolswasreported.Diolsweretetheredontopolystyrylsulfonylchlorideresin,yieldingsulfonateresins(2).Aftercleavedbydiethylamine,diisopropylamineandpropylaminerespectively,threeω-aminoalkanolswereobtained.

简介：阶段PVDF水晶结构和在先存在的阶段PVDF球粒以内的豌豆的结晶化上的豌豆的效果被光显微镜学OM，红外线的光谱学红外和扫描电子显微镜学SEM调查了。结果证明阶段PVDF球粒由展出高度弄弯的像滚动的形态学的lamellae组成并且在充满豌豆的混合优先地发展。与增加豌豆集中，滚动直径增加和滚动更好与对方被分开。豌豆在interspherulitic区域使第一结晶，transcrystalline层发展。随后，豌豆的transcrystalline层继续在阶段PVDF球粒以内成长，例如在在滚动之间的区域，直到在另外的豌豆transcrystalline层或球粒上侵犯。结晶化动力学结果显示在阶段PVDF的intraspherulitic区域的豌豆晶体的生长率与阶段PVDF的结晶化温度与豌豆，而是否定豌豆的内容显示出积极关联。

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简介：Thisreviewdealswiththepreparationandapplicationofpolymericsulfinateresinsasreactiveintermediateinsolidphaseorganicsynthesisandseparation.

简介：Thetetravalentmetalsaltsofmonoalkylphosphates[M(O3POR)2]areanewkindofstationaryphasesofChromatography-homogeneousbondedphases.Thispaperdealswiththeapplicationofceriumbis(monomyristylphosphate)assupporttoreversedphaseliquidchromatography.TheresultsshowthatthebestmobilphaseisCH3CN:H2O=95:5.Thegoodseparationtothemixturecontainingsixaromatichydrocarbonsandthedeterminationofnaphthaleneinagroupsampleshavebeenachieved.Theregressionanalysisshowsthatdetectlimits,linearitiesandprecisionforsixaromatichydrocarbonsaregood.

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简介：Inthisstudywastoinvestigate,byphase-transfercatalysis,theactivityofsingleandmixedammoniumandphosphoniumsaltsgraftedona"gel-type"styrene-7%divinylbenzenecopolymerintheoxidationofbenzylalcoholwithhydrogenperoxide.Awidevarietyofcatalystswithdifferentquaternarygroupsanddifferentquaternarychainlengthsubstituentswereexamined.Theactivityofsingle"onium"saltsincreasesasaconsequenceoftheassociationofammoniumandphosphoniumsaltsgraftedonthesamepolymericsupport.Theactivityofpolymer-supportedammoniumandphosphoniumsaltsincreaseswiththenumberofcarbonatomscontainedinthealkylradicalsofthe-oniumandofthefunctionalizationdegreewithphosphoniumgroups.

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简介：Abicentralpolymer-supportedphasetransfercatalyst,polystyrene-supportedpolyethyleneglycolandpyridiniumsalt(PS-Py-PEG-400),synthesizedwithchloromethylatedpolystyreneassupporteronwhichPEGandpyridiniumsaltwereimmobilizedsuccessively.ItscatalyticactivitywastestedforthereactionofsolidpotassiumacetateandbenzylbromidebyGCanalysis.ItwasfoundthatthebicentralcatalystperformedhigheractivitythanthemonocentralPS-PEG-400andPS-Py.

简介：Thedigitalimageprocessingtechniquewasusedfortheextractionofphysicalinformationfromthetemporalimageofphasestructureintheprocessofphaseseparationintheblendofpoly(butyleneterephthalate-co-caprolactone)withpolycarbonate.Thepowerspectrumimagesofthetwo-dimensionalFouriertransformation(2DFT)ofthetemporalimageofphasestructurereflectthechangeofthephasesizewithtime.

简介：阶段形态学，demixing的批评温度，和为混合由吸水的nanosilica(A200)或恐水病的nanosilica(R974)导致了的polystyrene/poly(乙烯基甲基醚)(PS/PVME)的分子的动力学的变化被调查。与混合矩阵的阶段分离，A200由于在A200和PVME之间的强壮的相互作用移居了进PVME富有的阶段，当R974移动了进PS富有的阶段时。热力学的可混和性和集中变化被A200nanoparticles显著地在A200上由于PVME的表面吸附在混合矩阵的阶段分离期间延迟，从rheological测量和颠倒热能力的削弱的增长在批评区域附近由关联长度验证了(Cp)在经由调制微分扫描的玻璃转变期间热量测定(MDSC)。尽管有对同质的混合矩阵的部分动力学的A200和R974的没有影响，nanosilica导致的限制的链散开仍然发生了。在nanosilica和聚合物部件之间的相互作用能限制混合矩阵的终端松驰并且进一步操作他们的阶段行为。

简介：Inthispaper,twokindsofPS-PTCsweresynthesizedusingdifferentmethodsbyintroducingcinchonineandquininetothepolymersupport.TheircatalyticpropertiesforthealkylationofN-diphenylmethyleneglycinet-butylesterwerealsocompared.

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