简介：Core-shellstructurednanosphereswithmesoporoussilicashellandNicore(denotedasNi@meso-SiO2)arepreparedthroughathree-stepprocess.MonodispersedNiprecursorsarefirstprepared,andthencoatedwithmesoporousSiO2.FinalNi@meso-SiO2spheresareobtainedaftercalcination.TheproductsarecharacterizedbyX-raypowderdiffraction,transmissionelectronmicroscopyandN2adsorption-desorptionmethods.Thesesphereshaveahighsurfaceareaandarewelldispersedinwater,showingahighcatalyticactivitywithaTOFvalueof18.5,andoutstandingstabilityinhydrolyticdehydrogenationofammoniaboraneatroomtemperature.

简介：Coreshell硅石nanoparticles在修改弄湿行为的表面是优异的，提高在结晶化的成核和生长，改进裸体nanoparticles的分散，并且因此升级器官的聚合物的全面性质。在包括聚酯的几聚合物的monodispersecoreshell硅石粒子的分散行为和形态学被考察，他们的潜在的应用程序被讨论。

简介：与Pb涂的Ninanoparticles(Zr，Ti)O3(PZT)被一个大音阶的第五音胶化方法并且在situ反应综合。并且他们的结构，氧化抵抗，和电磁的性质被调查。X光检查衍射模式(XRD)展出了那描绘到Ni的掺杂的阶段的小数量(哦)2从对待氨的Ninanoparticles和与PZT涂的对待氨的Ninanoparticles被检测。在与水的氨被预先对待以后，PZT涂层层在厚度是更多的制服和大约10nm。与非对待的的相比，与PZT涂的对待氨的Ninanoparticles的氧化抵抗被大约66桰獯獩
改进

简介：Novelcore-shellhydroxyapatite/chitosanbiocompositenanospheresweresynthesizedinamultipleemulsion.Themultipleemulsionwasaw/o/wemulsion,madeofdiammoniumphosphatesolutionasaninneraqueousphase,cyclohexaneasanoilphase,andcalciumnitratesolutionandchitosansolutionasanouteraqueous.Theformingmechanismofcore-shellspheresandtheinfluenceoftemperatureonthemorphologyofthenanosphereswereinvestigated.Thediameteroftheresultingcore-shellnanosphereswas100-200nmandthethicknessofthechitosanshellwasabout10nm.Anditconcludedthatatdifferentreactiontemperaturethemorphologiesoftheproductswouldbechanged.Thecore-shellnanosphereshavepotentialapplicationsforthedevelopmentofnewbiomedicalmaterials.

简介：TiO_2-coatedpolystyrenenanoparticleswerepreparedinasimpleway.First,functionalPSparticlesweresynthesizedbycopolymerizingonekindofpolymerizablesurfactantwithstyrene.Thenthestabledispersionsofpolystyrenenanoparticleswereusedastemplates,andpolystyrenenanoparticleswerecoatedwithtitaniabyinsituhydrolysisoftetra-n-butyltitanate(TBT).Nosurfacetreatmentandcentrifugation/redispersioncycleprocesswereneededduringthewholeexperiment.IsolatedPSsphereswithuni...

简介：

简介：Polystyrene(PS)fiberswithcore-shellstructureswerefabricatedbycoaxialelectrostaticspinning,[10_TD$IF]inwhichthereareliquidepoxyorcuringagentasthecoreandPSastheshell.Scanningelectronmicroscopy(SEM),Fouriertransforminfrared(FTIR)spectraandopticalmicroscopewereutilizedforcharacteringthemorphologyandcompositionofthefibers.Compositecoatingsembeddedwiththehealant-loadedcoreshellfibershavebeenpreparedandtheself-healingofthescratchonthecoatingshasbeenrevealed.

简介：Objective:Humanpancreaticcancerisoneofthemostcommonclinicalmalignancies.Theeffectofcomprehensivetreatmentbasedonsurgeryisgeneral.Theeffectsofchemotherapywerenotobviousmainlybecauseoflackoftargetingandchemoresistanceinpancreaticcancer.Thisstudyaimedtoinvestigatetheeffectsoffolatereceptor(FR)-mediatedgemcitabineFA-Chi-Gemnanoparticleswithacore-shellstructurebyelectrostaticsprayonpancreaticcancer.Methods:Inthisstudy,thelevelsofexpressionofFRinsixhumanpancreaticcancercelllineswerestudiedbyimmunohistochemicalanalysis.Theuptakerateofisothiocyanate-labeledFA-ChinanoparticlesinFRhighexpressioncelllineCOLO357wasassessedbyfluorescencemicroscopeandtheinhibitionrateofFAChi-GemnanoparticlesonCOLO357cellswasevaluatedbyMTTassay.Moreover,thebiodistributionofPEG-FA-ICGDER02-Chiintheorthotopicpancreatictumormodelwasobservedusingnear-infraredimagingandthehumanpancreaticcancerorthotopicxenograftsweretreatedwithdifferentnanoparticlesandnormalsalinecontrol.Results:TheexpressionofFRinCOLO357wasthehighestamongthesixpancreaticcancercelllines.TheFRmainlydistributedoncellmembraneandfewerinthecytoplasminpancreaticcancer.Moreover,theabsorptionrateoftheFA-Chi-GemnanoparticleswasmorethantheChinanoparticleswithoutFAmodified.TheproliferationofCOLO357wassignificantlyinhibitedbyFA-Chi-Gemnanoparticles.ThePEG-FAICGDER02-Chinanoparticleswereenrichedintumortissueinhumanpancreaticcancerxenografts,whilenon-targetednanoparticlesweremainlyinnormallivertissue.PEG-FA-Gem-Chisignificantlyinhibitedthegrowthofhumanpancreaticcancerxenografts(PEG-FA-Gem-Chivs.Gem,t=22.950,P=0.000).Conclusions:PEG-FA-FITC-ChinanoparticlesmightbeaneffectivetargeteddrugfortreatinghumanFR-positivepancreaticcancer.

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简介：有在粒子的核心的高carboxyl内容的没有肥皂的吸水恐水病的核心壳乳胶粒子经由播种乳剂被综合聚合使用甲基methacrylate(MMA)，丁基acrylate(BA)，甲基丙烯酸(MAA)，苯乙烯(圣)和乙烯乙二醇dimethacrylate(EGDMA)作为单体，并且在聚合，粒子尺寸和形态学上在核心准备使用的MMA内容的影响被传播电子显微镜学调查，动态轻散布结果证明播种乳剂聚合能用当在核心准备的MAA内容是时，喂过程的饥饿的单体顺利被执行平等者到或不到24wt%，并且有恐水病的PSt壳的吸水的P(MMA-BA-MAA-EGDMA)核心的包含的效率随MAA内容的增加减少了。当有中等极性的P(MMA-MAA-St)的夹层在P(MMA-BA-MAA-EGDMA)核心和PSt壳之间被插入时，井在核心准备与24wt%MAA内容设计了没有肥皂的吸水恐水病的核心壳乳胶粒子被获得。

简介：

简介：Lithium-sulfur（Li-S）batteriesbelongtooneofthepromisingtechnologiesforhigh-energy-densityrechargeablebatteries.However,sulfurcathodessufferfrominherentproblemsofitspoorelectronicconductivityandtheshuttlingofhighlydissolublelithiumpolysulfidesgeneratedduringthecycles.Loadingsulfurintoporouscarbonshasbeenprovedtobeaneffectiveapproachtoalleviatetheseissues.Mesoporousandmicroporouscarbonshavebeenwidelyusedforsulfuraccommodation,butmesoporouscarbonshavepoorsulfurconfinement,whereasmicroporouscarbonsareimpededbylowsulfurloadingrates.Here,acore-shellcarbon,combiningboththemeritsofmesoporouscarbonwithlargeporevolumeandmicroporouscarbonwitheffectivesulfurconfinement,waspreparedbycoatingthemesoporousCMK-3withamicroporouscarbon（MPC）shellandservedasthecarbonhost（CMK-3@MPC）toaccommodatesulfur.Aftersulfurinfusion,theas-obtainedS/（CMK-3@MPC）cathodedeliveredahighinitialcapacityofupto1422mAh·g-1andsustained654mAh·g-1reversiblespecificcapacityafter36cyclesat0.1C.Thegoodperformanceisascribedtotheuniquecore-shellstructureoftheCMK-3@MPCmatrix,inwhichsulfurcanbeeffectivelyconfinedwithinthemeso/microporouscarbonhost,thusachievingsimultaneouslyhighelectrochemicalutilization.

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简介：Mechanicalpropertiesofepoxyresinwereinvestigatedbyaddingcore-shellelasticparticles(CSEP).Theresultsindicatedthatoptimizedcore-shellratiowas60/40andtheloadingvolumeofCSEPwas10phr(perhundredpartsofepoxyresinbyweight).Theimpactstrengthofmodifiedsystemsincreasedapparentlywiththedecreaseofcoresizes.However,theshearingstrengthchangedgentlywiththeparticlesizes.CSEPwithlightlycrosslinkedrubberycoreshowedmoreeffectivenessontoughnessthanothers.Withsolutionblending,CSEPcouldbedispersedinepoxymatrixwell,andthemorphologiesofdispersedrubberdomainswerecontrolledperfectlybyCSEPwhosestructurewaspredesigned.Acavitation-shearingbandtoughnessmechanismwasobservedfromtheSEMmicrographsoffracturesurface.Italsowasfoundthatthedeformingtemperature(DT)ofmodifiedepoxydidnotdeclineapparently.

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简介：Inthepresentwork,core-shellNi@SiO2catalystswereinvestigatedinordertoevaluatetherelevanceofcatalyticactivityandsurfacestatesofNicoreaswellasNinanoparticlessizetocatalyticpartialoxidationofmethane(POM).ThecatalystswerecharacterizedbyN2adsorption,H2-TPR,XRD,TEMandXPStechniques.Thecatalyticperformanceofthecore-shellcatalystswasfoundtobedependentonthesurfacestatesofcatalyst,whichinfluencedtheformationofproducts.Itwasconsideredthatcarbondioxideformedontheoxidizednickelsites(NiO)andcarbonmonoxideproducedonthereducedsites(Ni).ThesurfacestatesofactivemetalinthedynamicwereinfluencedbothbythesizeofNicoreandtheporosityofsilicashell.However,thecatalyticactivitywouldbedebasedwhenthesizeofNicorewasunderacertainextent,whichcanbeascribedtothefactthecarbondepositionincreasedwiththeincreasingcontentofNiO.TheeffectsofsurfacestatesofNi@SiO2catalystonthecatalyticperformancewerediscussedandthereactionpathwayoverNicoreencapsulatedinsidesilicashellwasproposed.

简介：有核心壳的合成nanoparticles组织的Cross-linked-cyclodextrinpolymer/Fe3O4在carboxymethyl-cyclodextrin的表面上经由生气连接反应被准备(厘米--CD)在-cyclodextrin的修改Fe3O4nanoparticles由把epichlorohydrin用作crosslinking的碱的答案代理人。准备合成nanoparticles的形态学，结构和磁性被传播电子显微镜学(TEM)调查，Fourier变换红外线(FTIR)spectrometry，X光检查衍射(XRD)测量，thermogravimetric分析(TGA)和颤动的样品magnetometry(VSM)分别地。

简介：polypropylene/ethylene-propylene随机copolymer/ethylene-propylene的一系列第三的混合分割了其微观结构类似于影响聚丙烯共聚物(欧洲电脑生产厂商)的那些的共聚物(HPP/EPR/EbP)被准备以便系统地在微观结构和欧洲电脑生产厂商的结晶化行为上调查作文的效果。主要阶段形态学的观察表明有核心壳结构的驱散的阶段能在某些作文被重建，过多的EPR在第三的混合导致bicontinuous阶段结构。在包括等温、非等温的结晶化经历一样的静止结晶化以后，这些混合样品展出融化行为的特殊作文依赖者，即，融化的点随EPR内容的增加显著地增加直到它在一个批评内容(大约30wt%)拒绝。结晶化行为主要被归功于到不同成核能力。尽管在EPR和HPP部件之间的相容性随EPR的增加变得更坏，由于增加的界面的区域和EbP的减少的集中满足，这被建议，在混合的更高的EPR内容除了明显的bicontinuous的外观便于到异构的成核阶段结构。

简介：

简介：hard-core/soft-shell钙碳酸盐(CaCO3)的合成/poly(甲基methacrylate)(PMMA)混合结构化的nanoparticles(<100nm)由把分裂成原子的微乳液聚合，过程被报导。聚合物链通过acoupling代理人的使用被抛锚到nano-CaCO3的表面上，triethoxyvinylsilane(TEVS)。铵persulfate(APS)，钠dodecyl硫酸盐(SDS)和n-pentanol分别地被用作开始者，表面活化剂和cosurfactant。coreshell乳胶粒子的聚合机制被讨论。由PMMA的nano-CaCO3的封装用一台传播电子显微镜(TEM)被证实。coreshell粒子的grafting百分比被thermogravimetric分析(TGA)调查。nano-CaCO3/PMMAcoreshell粒子被Fourier变换描绘红外线(FTIR)光谱学和微分扫描热量测定(DSC)。FTIR结果在nano-CaCO3粒子和PMMA的接口揭示了一个强壮的相互作用的存在，它成功地暗示聚合物链是grafted到通过联合代理人的连接的nano-CaCO3粒子的表面上。另外，TGA和DSC结果与纯nano-PMMA的相比显示了coreshell材料的热稳定性的改进。nano-CaCO3/PMMA粒子被混合进聚丙烯(PP)矩阵由融化处理。它能也用扫描PMMA锁住的电子显微镜学(SEM)被观察grafted在聚合物矩阵(PP矩阵)防碍到CaCO3nanoparticles上CaCO3的聚集并且因此与PP矩阵改进CaCO3nanoparticles的相容性。