高彈性聚氨酯的合成、性能及其在稀溶液中的行為研究.pdf

1、南開(kāi)大學(xué)碩士學(xué)位論文高彈性聚氨酯的合成、性能及其在稀溶液中的行為研究姓名：楊曉英申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：高分子指導(dǎo)教師：栗方星2002.3.1塑莖盔蘭堡主堡壅一塑里AbstractApolymerizationsystemthatpossessedintermolecularandintramolecularreactionWaSdesignedinourworkSincetherewerenumerouspendentactivegr

2、oupsinsidethemolecularchain，intramolecularreactionsmainlyoccurred，whensomeendgroupswerewrappedupbymacromolecularsegmentsTheintramolecularreactionsdidn’tincreasethemolecularweight，buttheydecreasedtheamountofactiveendgroup

3、sMeanwhiletheintermolecularreactionsincreasedmolecularweightandcrosslinkedstructureyieldedThehigherthemolecularweightWas，theeasierthesegmentswerecovered，andthepossibilityofintramoleeularreactionswasmuchhigherAttheendofth

4、ereactionagreatamountofend—groupswouldbeconsumedandthecrosslinkwascontrolledSothemacromoleculeswithcrosslinkedstructureweresynthesizedTheyhadthreedimensionalnetworkstructureandwerecalledmicrogelinmanydocumentsTheycoulddi

5、sperseintoindependentmoleculesinsolutionandformedthermodynamicstruesolutionThroughusingdifferentextemdersandalteringtheamountoftheextendegaseriesofmacromoleculeswithcrosslinkedslanactureweresynthesized，whichcomposedpolyu

6、rethanewithhighelasticityTheDSCcurveswereanalyzedandthemechanicalandtheantithrombogenicpropertiesweremeasuredThenthiskindofmaterialwasfoundtobeofverygoodmeehanicalandantithrombogenicpropertyItcouldbeusedasmedicalmaterial

7、，Inordertoobtainfurtherinformationontheinternalstructureofthecrosslinkedmacromolecules，laserlightscatteringwasusedtoinvestigateontheirsolutionbehaviorinourworkAlargenumberofdatawereobtainedandthespecialbehaviorsofmacromo

8、leeuleSwerefoundinsolutionThroughthemeasurementofthemechanicalpropertytheeffectonitoftheamountandsortsoftheextenderwerediscoveried，whichrevealedtherelationshipbetweenthestructureandthepropertyItcouldbeimaginedthatthepoly