水性超支化聚氨脂的制备及性能研究

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1、万方数据太原理工大学硕士研究生学位论文withtheoreticallypredictedmolecularweightandtheobservedvaluesofmolecularweightdistributionareinreasonableagreements．ThisindicatedthosesynthesizedWHBPUhaveidealstructures．TheWHBPUarewellwaterdispersibleandthedispersibilityisgovernedbythehydrophilici

2、tyofthechains．TheaverageparticlesizesofaqueousdispersionswereincreasingwiththeincreaseofMPEGcontentsexceptWHBPU一8：4．Thisisduetothechangeofdispersionmorphology．TherheologicalmeasurementshowedWHBPUdisplayanon—newtonianbehavior．ThecrystallinitywasthesamewithMPEGandthecr

3、ystallinedegreeincreasedwiththeincreaseofMPEGcontents．TheDSCshowedthattheWHBPUpossesstheglasstransitiontemperatureandmeltingtemperaturewiththetemperaturerising．TheTGAresultsconfirmedthatthesefilmshadgoodthermalpropertiesandthedecompositionprocessconsistedoftwostages：

4、firststepforhardsegment(urethanegroups)andsecondstepforsoftsegment(esterandetherchainsegments)．ThefilmsofWHBPU一4：8havethebestcomprehensiveperformancetobethecoatingrawmaterial．Thefilmsperformancewascorrespondingtothedegreeofcureandcrosslinkdensity．Thewatersolubledyes，

5、methyleneblue(MB)，weresuccessfullytransportedfromwatertotheinsolublechloroformphasebythecore·shellWHBPU，indicatingthegreatpotentialofthemicellesasnano—carries．ThemaximumpercentofremovingMBcanreach90％whichwasdeterminedby万方数据太原理工大学硕士研究生学位论文proportionofhydrophilicandhyd

6、rophobicsegments．ThepropertyofWHBPUmaybeusefulinthefieldofcoatingcolorprotection，drug—loading，thedyeremoval，watertreatmentandSOon．KEYWORDS：hyperbranchedpolyurethane，waterbomeresin，films，crystallinity，loading—capacity万方数据太原理工大学硕士研究生学位论文万方数据太原理工大学硕士研究生学位论文目录摘要．．．．．．．．．

7、．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．。．．．。．．iABSTRACT．．．．．．．．．．．．．．．．．．．．．．．．．．．．．，．．．．．．．．．．．．．．．．．．．v第一章绪论．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．11．1引言．⋯⋯⋯．⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．⋯⋯⋯．11．2超支化聚合物⋯⋯．⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．⋯⋯⋯⋯21．2．1超支化聚合物的发展⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯31．2．2超支化结构特征⋯⋯⋯⋯⋯⋯⋯．⋯⋯．⋯⋯⋯．．．

8、．．41．2．3超支化聚合物的合成⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．⋯⋯．．61．3超支化聚氨酯⋯⋯．．．⋯⋯⋯．⋯⋯⋯．．⋯⋯一．⋯．．⋯⋯．91．3．1水性聚氨酯⋯．⋯⋯⋯⋯⋯⋯⋯．．⋯⋯⋯⋯⋯⋯．．91．3．2超支化聚氨酯的合成⋯⋯．⋯⋯⋯⋯⋯⋯．．⋯⋯⋯．．101．