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简介：Anepoxy-terminatedhyperbranchedaromaticpolyester(P3)wassynthesizedfromahyperbranchedaromaticpolyestercontainingcarboxylicacidendgroups(P1),whichwasderivedfromthecondensationpolymerizationoftheAB2monomer,5-acetoxyisophthalicacid.PolymerP1wasconvertedintothepolymericacidchloridebyreactionwiththionylchloride.Theacidchloridewasreactedwithethanolandglycidoltoformapoly(ethylester)(P2)andanepoxyterminatedmaterial(P3),respectively.Thereactionconditionsineachstepoftheseprocesseshadtobecontrolledverycarefullytoavoidunwantedcross-linkingreactions.Thecharacterizationofproductsandintermediates,includingmolecularweightdistributionsandthermalproperties,arereported.

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简介：FifteennewpolyesterligandswerepreparedbycopolymerizationofEDTA(ethylenediaminetertraaceticacid)dianhydrideorDTPA(diethylenetriaminepentaaceticacid)dianhydrideanddihydricalcoholordihydricphenol.Theirparamagneticmetalcomplexeswerealsosynthesized.Allpolyesterligandsandmetalcomplexeswerecharacterizedby^1HNMR,IRspectraandelementalanalyses.Preliminarystudyshowedthatthepolyestermetalcomplexeshadhigherrelaxationeffectivenessascomparedtocorrespondingsmallmolecularmetalcomplexes.

简介：Asubstitutedglycolide,3-benzyloxymethyl-1,4-dioxane-2,5-dione,wassynthesized.Itisasuitableprecursorforthepreparationofanewhydrophilicbiodegradablepoly(a-hydroxyacid).ThepolymerizationswerecarriedoutinbulkinthepresenceofSn(Oct)2at120-140℃.TheresultingpolymersweresubjectedtohydrogenolysiswithaPd/Ccatalystinamixedsolventtoremovetheprotectingbenzylgroups.Anovelpoly(a-hydroxyacid)withpendanthydroxygroupswasobtained.Thehydrophilicityoftheresultingpolymerwasevaluatedpreliminarily.``

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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：Anewlydevelopedcoaxialdielectricbarrierdischargereactorwithalengthof1000mmatanatmosphericpressurewasusedforplasmatreatmentofpolyesterfibercordinaroll-to-rollmanner.Inthisreactor,swirlingmixturegasesofoxygenofabout1%andargonwithaflowrateof1.5L/minto2.7L/minensuredthegasusagesparing,dischargeuniformityandefficientfibersurfacemodification.Thewatercontactangleandsurfacemorphologyofthetreatedfiberweremeasured.Theresultsshowthatthesurfaceoxygenationismainlyresponsibleforthewettabilityimprovementofthefibercordwhenpassingthroughtheplasmazoneatalinearspeedof3m/minto8m/min.Thespecimensofmodified-polyesterfiberreinforcedrubbercompositewerealsopreparedfortheinterfacialshearstrengthtests.Furthermore,theeffectofaddingoxygenintoargondischargeonthefibersurfaceoxidationwascorrelatedwithopticalemissionspectroscopy.Finally,theeffectofaddingoxygenintoargondischargeonthekineticprocessesoftheactivespeciesgenerationwerealsoanalyzed.