简介：He,CO2,O2,N2,CH4,C3H8,andt-C4H10gaspermeabilitycoefficientsanddiffusioncoefficientsofpoly（4-methylpentene-1）（PMP）withvariousdegreesofcrystallizationwereplottedagainstthedegreeofcrystallization.Theplotdemonstratedalinearrelationship.ThegaspermeabilitycoefficientanddiffusioncoefficientofpureamorphousandpurecrystallinePMPswereevaluatedbyalinearextrapolationtozeroand100%crystallinity,respectively.TherelationshipbetweenthediffusioncoefficientofcrystallinepartsofPMPandthekineticdiameterofpenetrantgaseswasdiscussed.Syndiotacticpolystyrene（SPS）couldexistasδformcrystalscomplexedwithorganicsolventssuchasbenzene,toluene,xylene,andethylbenzene.ThemesophaseofSPSispreparedbyannealingtheδformofcrystallinecomplexesatacertaintemperaturefor1h.Thedesorptionofsolventduringannealingalmostdoesnotresultinchangesofboththeconformationofbackbonechainsandthecrystallattice.Wecouldpreparethemesophasecontainingmolecularcavitieswiththesizeandshapeoftheorganicsolventmolecules.ThemesophasecouldsorbthesamesolventafterthemannerofLangmuirsorptionatlowvaporpressurerangewhilethiswouldnotbethecaseforsolventsofdifferentsizeandshape.Thissuggestsamolecularrecognitionoforganicsolvent,andmesophaseSPSmightbeusefulforseparationmembraneandadsorptivematerial.

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简介：Theapparentsolubility（S）,concentration-averagediffusivity（D）,andpermeability（P）,forC02,CH4andN2throughPPOandaryl-brominatedPPOat35℃forpressurerangingfrom1to26atmarereported.ItisfoundthatP,D,andSofthemembranestoallthethreegasesvarywiththeextentofbromination.Sincreaseswiththeincreaseofthepercentofbromineineachcase,butDtoCO2increasesremarkablyonlyathigherdegreeofbrominafion,andtherefore,PtoCO2isincreasedbymorethan100%overawiderangeofpressureinthecase.Thesolubilitydataarewelldescribedbythedualmodesorptionmodel.ItisfoundthatthegasmoleculessorbedbytheLangmuirmodearerelativelymoreimmobilizedandthecontributionofthenonequilibrinmcharacterofthepolymertogaspermeationincreasesobviouslyforCO2andishardlychangedforCH4withincreasingbrominecontent.Theseobservationsareinterpretedintermsofchangesinspecificfreevolume（SFV）andthecohesiveenergydensity（CED）ofthepolymers.

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简介：很好相对结晶，高方面比率Mg-Al分层的双氢氧化物(LDH)被一起沉淀过程在水的答案并且进一步准备对器官的修改LDH(OLDH)含水面对表面活化剂。设置的结构和OLDH的高方面比率被X光检查衍射(XRD)和扫描电子显微镜学(SEM)验证。一系列poly(丙烯碳酸盐)(PPC)/OLDH有OLDH的不同内容的合成电影经由一个融化混合方法被准备。他们的生气的节形态学，煤气的障碍性质和张力的力量作为OLDH内容的功能被调查。SEM结果证明OLDH血小板很好在composites和面向的平行以内被驱散到合成的表飞机。煤气的障碍性质和张力的力量显然在OLDH的加入之上被提高。特别地，PPC/2%OLDH电影在所有合成电影之中展出最好的障碍性质。与纯PPC相比，氧渗透系数(OP)和水蒸汽渗透系数(WVP)被54%和17%与2%OLDH增加分别地减少。而且，PPC/2%OLDH的张力的力量比纯PPC与的高是83%仅仅小在裂缝延伸输。因此，PPC/OLDH合成电影在由于它的可被细菌破坏的性质，优异的氧和潮湿障碍特征包装材料显示出大潜在的申请。

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

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：包含磷氮(MSMM-Al-P)的新奇包含的火焰retardant被与聚酰胺66包含准备(PA66-MSMM-Al-P)为聚酰胺6的火焰延迟(PA6)。结构和PA66-MSMM-Al-P的热性质被Fourier变换红外线的光谱学，X光检查光电子光谱学和thermogravimetric分析描绘。包含火焰retardants(MSMMAl-P和PA66-MSMM-Al-P)的PA6易燃被限制的氧索引测试，垂直燃烧测试和锥热量计调查。火焰retardancy和锥calorimetric分析在flame-retardantPA6建议了在PA66和MSMM-Al-P之间的synergistic效果。flame-retardantPA6的热稳定性也被调查。

简介：基于的二naphthalimide的技术性质分散尼龙6上的染料和聚酯纤维面对脲被调查。基于的二naphthalimide驱散染料被综合。染料被净化然后充分描绘了使用1H-NMR，FTIR和融化的点分析。染料的分散在水里被准备并且在尼龙6上适用并且宠物纤维。染料在底层上提供了好逐渐增加性质。为了增加，染底层的吸附，脲被增加进dyebath。由增加脲，聚酯的染料吸附显著地被增加，当尼龙6的增加是不显著的时。染料在底层上显示出好迅速性质。

简介：PolysaccharidecoatedPLAnanoparticlesbearingaldehydegroupswerepreparedbydialysisofDMSOsolutionofcholesterolhydrophobic-modifieddextranpolyaldehydeandPLAagainstwater.Theaveragediameterofthenanoparticleswasabout160nm,andthesizedistributionwasnearlyhomogenous.ThenanoparticleswerefunctionalizedsimultaneouslywithCD71andEGFRantibodythroughtheSchiff'sbasereaction,andthenradiolabeledwith~(99m)Tc.Afterperfusedtheradiolabelednanoparticlesintotumor-bearing...

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.

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