苯丙乳液的制备及其稳定性的研究-黄润波

　2010829　8JournalofMianyangNormalUniversityAug.2010Vol.29　No.8　:2010-05-11:(1988-　),,072。:(1959-),,,:。黄润波,钟　司,杨　科,王　洪＊(,　621000)　:采用壳单体预乳化和种子乳液聚合工艺,以苯乙烯为核单体,丙烯酸丁酯为壳单体,十二烷基硫酸钠,OP-10为混合乳化剂,以过硫酸钾,过硫酸铵,为混合引发剂,丙烯酸为功能单体,制备出具有耐酸、耐碱、耐盐、耐高温、耐寒的苯丙乳液。当取苯乙烯(55.5～58)g、丙烯酸丁酯(44～55)g、乳化剂(2～2.5)g预乳化和乳液聚合分别在45℃、80℃时能制备出核壳结构的苯丙乳液。可用作水性涂料。:苯丙乳液;预乳化;乳液聚合;核壳结构:TQ331.4　　:A　　:1672-612x(2010)08-0040-04、。,、、,、,[1-3]。,,、、,。,,、、、、,。,,、[4-6],、。。,SDSOP-10,,,、、、、。,,。1　1.1　(St)、(BA)、(AA)、(SDS)、(OP-10)、(KPS);。FTLA-8400(SHZMADZU),(),()1.2　2～2.5gSDS、1gOP-10,45℃。30～3545gBA4gAA,。1.3　0.6gNaHCO3,0.2gKPS0.2g20gSt,60g、、、,80℃,。,35gSt,60,(),。1.4　50℃,1/3(1.2),1580℃,100,30min90℃,45min。60℃,pH,。2　2.1　FTIRFTIR1:1　FTIRFig.1FTIRspectraofstyrene-acrylicemulsion　　1IR,3666.12cm-1-OH,1730.74cm-1C=O,1250.30cm-11165.45cm-1-C-O-C-,1600.81cm-1,757.97cm-1C-H,1452.30cm-1-COO-[7],St、BA、AA3,。2.2　,,。,,,。1。1　Tab.1Effectofplaymerizationtemperatureonthestabilityofemulsions/℃65、、、,,70、、、,,75、、、,,80、85、、,90---,　　1,,;85℃,,;90℃,,。80℃。,,90℃,。2.3　,,AA,,。AA2。·41·8:2　Tab.2Effectofacrylicacidamountontheviscosityofstyrene-acrylicemulsionAA(%)　　　　0～1,1～2,2～33～4,4～5,　　,1～2%。2.4　。St。,St,、NaHCO3、,,St,。,、NaHCO3、,St,。2.5　[8]3　pHTab.3EffectofpHvalueonemulsionstabilityPH123451011121314　　3,,。2.6　1%()CaCl2[9-10],CaCl21:5,24,,。,,。2.7　:0℃,2,。:50ml90℃4h,100℃1h,、,。2.8　250～300r/min1h。。3　(1)55.5～58g,44～55g,2～2.5g,45℃、80℃·42·()29(2),,,,,,,。(3)1/3,SDS0.7～0.8g,、。(4)SDSOP-10,。:[1]　,,.[J].,2007,28(5):45-8.[2]　LeeCF.Kinetcicsoftheemulsioncopolymerizationofstyreneandbutylacylate[J].PolymerJournal,2000,32(8):642-650.[3]　SpiridonOprea,TornerDodita.Influenceofagitationduringemulsionpolymerizationofacrylic-styrenelatexesonendproductproperties[J].ProgressinOrganicCoatings,2003(3/4):194-201.[4]　,,,[J].,2005,23(3):32-34.[5]　LeongYS,CanduF.Lanversemicroemulsionpolymerization[J].PhysChem,1982,86(12):2269-2275.[6]　,,.[J].,2008,29(1):24-26.[7]　LangeJ,HergethWD,WartewigS.Infraredspectroscopyofpolymericcoriccore-shelllatexes[J].ActaPolymerica,1988,39(9):479-481.[8]　LiZM,YangJH,YuYZ,etal.Morpholigicalcharacterizationofthecore-shelllatexparticlebytransmissionelectronmi-croscopyandimageanalysis[J].JournalofAppliedPolymerScience,2003,89(3):855-861.[9]　,,.[J].,2007(3/4):194-201[10]SlawinskiM,MculdijkJ,VanHerkAM,etal.SeededemulsionpolymerizationofstyreneIncoporationofacrylicacidinlatexproducts[J].JournalofAppliedPolymerScience,2000,78(4):875-885StudyOnWater-basedAcrylicEmulsionHUANGRun-bo,ZHONGSi,YANGKe,WANGHongAbstract:Styrene-acrylicemulsionwaspreparedbyseedemulsionpolymerizationwithstyreneascoremon-omerandbutylacrylateasshellmonomer,acrylicacidasfunctionalmonomer,sodiumdodecylsulfateandOP-10asmixedemulsifier,potassiumpersulfateandammoniumpersulfateasinitiator.Theemulsionimprovestobeacid-proof,alkali-proof,salt-proof,cold-resistant.Theoptimumconditionsofthepolymerizationare:BA∶St∶OP/SDS=44～45∶55.5～58∶2～2.5,pre-emulsifyingtemperature45℃,reactiontemperature80℃.Keywords:styrene-acrylicemulsion;pre-emulsion;polymerization;core-shellstructure·43·8: