超声引发乳液聚合同步原位合成纳米AG_聚合物复合粒子的研究

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1、*粪-,j：T03¨单位代日：’。361凑寝理工大学ANHUIUNIvERslTYOFSCIENCEAND7ECHNOLOGV硕士学位论文论文晤日2竺兰!!兰兰兰!!竺竺腺位台戚竺兰兰!!!!!竺艇台粒子的研究作者姓名：麒盒Ⅱ学科专业：应用化学导炜姓名：绦国时教授完成时问：一OO五年四月超卢引发乳液聚合同步原位台成纳米Ag／聚合物复合粒子的研究AbstractTheultrasonicradiationtechniquewasintroducedtOsynthesizenanomaterials，andnanosilverparticles，nanosilver／polymerc

2、ompositesparticleswerepreparedthroughultrasoniccavitationwithuniquedispersion，crushing，activation，initiationaction．Theobtainednanomaterialswerecharacterizedbymeansofultraviolet—visiblespectra(UV)，infraredslSectroscopy(IR)，highresolutiontransmissionelectronmicroscopy(HRTEM)，transmissionelectro

3、nmicroscopy(TEM)，differentialscanningcalorimetry—thermogravimetry(DSC—TG)，X—raydifhactionfXRD)，LaserZetasizeranalysisandSOon111emixturesolutionconsistedofthesilvernitrateandpolyvinylalcohol(PVA)dissolvedinwaterwasactedbyultrasoundwaveandthesilverioninthesolutionwasreducedtosilveratom，thensilv

4、erclustersduringtheprocessofultrasonicating．TheresultsofUVSpectrasuggestedthattheflano—silverwasformedandthemaximalabsorbingpeakshiftedtOlongwave．ThephotosofTEMshowedthattheaveragesizeofnano—silverparticulatewasaboutl5～25nm．whichwasequaltothatbyZetasizer，andthatnano—silverparticulatewerefract

5、alassemblingintoordereddendriticalaggregationstructure．Silver-polymethylmethacrylatenanocompositesweresuccessfullysynthesizedintheemulsioncontainingmethylmethacrylatemonomersandsilversaltbutneitherinitiatornorreductantcontainedinsitubyultrasonicradiating．TheresultantAg／PMMAnanocompositeswerec

6、haracterizedbyIR，HRTEMandXRD，andtheresultsshowedthatUanO—silverascorewithinthecompositesparticleswasunifonn．polycrystallineandhighordercrystalline，andthatthereexistedSomedegreeofinteractionbetweensilverparticlesandpolymermatrix．Thecontentofpolymerinthecompositeshadsomeeffectonuano-silverscrys

7、tallization．TheeffectsoftheexperimentalconditionssuchassystemictemperatureandcontentsofcomponentsonthefinalconversionofmonomerandmolecularweightofPMMAwerealsoresearched．Theinterestingphenomenonwasfoundthatthepolymerizationwaspromotedbysilverc