乳液聚合法制備乙烯基超支化聚合物及其應用研究.pdf

1、桂林理工大學碩士學位論文乳液聚合法制備乙烯基超支化聚合物及其應用研究姓名：趙烈申請學位級別：碩士專業(yè)：高分子化學與物理指導教師：張發(fā)愛20100401桂林理工大學碩士學位論文4bstractHyperbranchedpolymersarehighlybranchedmacromoleculeswiththreedimensionalandfaultydentritiearchitectureDuetotheiruniquestructu

2、reandoutstandingpropertiesandpotentialapplicationsinvariousfields，hyperbranchedpolymershaveattractedincreasingattentionHowever，itisdifficulttopreparehyperbranchedpolymersforfamiliarvinylmonomersLargescaleapplicationinind

3、ustrywasembarrassedbythegelationoccurredinsynthesisprocessandthebroadmolecularweightdistributionofproductionsDuetothepeaceablecondition，easycontrolledsynthesisprocessandhighpolymerizationrate，emulsionpolymerizationbecome

4、saneffectivemethodforpreparingvinylhyperbranchedpolymersThisarticlesummarizesthedevelopment，synthesis，propertiesandapplicationofhyperbranchedpolymersInaddition，thesynthesismechanismofvinylhyperbranchedpolymersandtheappli

5、cationofemulsionpolymerizationinpreparingvinylhyperbranchedpolymerswereintroducedHyperbranchedpoly(butylacrylate)waspreparedsuccessfullyviabatchemulsionpolymerizationwithhighmonomerconversionButylacrylate(BA)wascopolymer

6、izedwithabranchingdivinylmonomer，diVinylbenzene(DVB)，also，achaintransferagent，n—dodecanethiol(C12SH)，wasusedtoinhibitgelationThestructureofthecopolymerwascharacterizedbyFTIRand1HNMRThepolydispersityofemulsionparticles，so

7、lubility，branchdegree，molecularweightandmolecularweightdistributionofthehyperbranchedpolymerweredeterminedTheresultsindicatedtheemulsionparticlesexhibitedarelativesmallermeansizeandanarrowparticledistributionindex(PDI)Th

8、ehyperbranchedpolymershowedagoodsolubilityinorganicsolventsAnincreaseinbranchdegree，adecreaseinmolecularweight，andanarrowmolecularweightdistributionofthepolymerwerefoundasanincreaseofDVBandC12SHThekineticofhyperbranchedp

9、oly(butylacrylate)bybatchemulsionwasstudiedItwasfoundthatthemonomerconversionandpolymerizationratewereinfluencedbyreactiontemperature，thelevelofchaintransferagent，initiatorlevelandthekindofinitiatorAhighermonomerconversi