超声乳液原位合成纳米镓_PMMA复合粒子的研究

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1、中图分类号：!Q圣25：2学科分类号：4型：§§垫YS0《3i2论文编号：也』哥级：公荭安徽理工大学硕士学位论文超声乳液原位合成纳米镓／PMMA复合粒子的研究作者姓名：王直王专业名称：廑旦也堂研究方向：直盆壬挝料导师姓名：筮国盟熬援导师单位：丝堂王程丕答辩委员会主席：兰盈丝论文答辩日期：2006年6月；日安徽理工大学研究生处2006年6月4日安徽理工火学硕士论文AbstradPreparationanddispersiontecllIlologyofⅡano—Gaparticles，preparationandc

2、haracterizationtechnologyofpolymernanopanjclesandofnano-G“polymercOmpOsiteparticlesweIemainlystudiedbyultrasonicwaVeinthisp叩er．Theformingmechanismofnano—Ga／polymercompositepaniclesw船initiallyresearched．Thehomodispefsingnano—Gapanicleswereprep盯edbyultrasoniccn

3、lshingmetllodwitllpla锄os锄(PVP)usedasdispersingandstabilizingagcnt．AndtheeffcctsofultrasonictimealldconcentmtionofPVPonstabilityofdispersingsystemweresludjed．Theresultssuggestedthatnano—Gaparticlesthatwererabdoidwith40一50IImweremadebyuItIasonicafter30minutes．T

4、hespedaleffectsOfultrasonicwaveindudillgdispersion，emulsi6cation，initiationands0on，makcemulsionpolymerizationofmctheylmethacrylate(MMA)intopoly(metheylmetllacrylate)nail叩anicles．EffectsofkindsoffactorsonconVersionrateofMMAmonomerandm瞳ecul盯weightofpOlymcfweres

5、tudiedindetail．ThesizeofPMMAemulsionpanicleswascharacterizedbymeaIlsofTEM，andtheresultsshowedlhatthesize0fthepanicleswasabout45—60nm；thedistributionofthePMMAemulsiOnpanicles打omtheresultsofI丑serGrajninesstestingwasabOutno皿aldist曲utionandthenumberpercent0fpatic

6、lebet、】lreen35nmand70nmwas86％innumberaVeragedistributjon．ThemicrostmctureOfPMMAwaschafacterizedbyFr-IRalldthemlalperfomancebyTG-D11A．Thenano-G卿oly(metheylmettlacrylate)compositeparticleswerefomedbyultrasonicwave．Thee矗kctofnano—GapaticlesonconversionrateofMMAa

7、ndtllestabilityofpolymereumulsionwerestudied．Themicrost兀lctureofcompOsitepanideswerecharacterizedbyTEM，丌_IR，TG—DTAandXPS．neexperimentalresultsshowedthatnano-GapanideswerccoatedbyPMMA孤dthecompOsitepanicleswith60一100nmhadtypical∞fe／sheUstmcturc，aIldthemicmlevel

8、recombjnationwasrealizedbecausetherewercphysic“packageandchemicaladionbetweenmetalnanoparticlesandpolymer1ayeLThefo功1ingmechanismofnallo-Ga／PMMAcompositepanicleswasdiscussedinthepaper．Fig