Researchonthepreparationoftheflocculant,sodiumalginate-graft-polyacrylamideanditsflocculatingcapacityLiZhonglin1,2,YuPing1,LuoYunbai1(1.CollegeofChemistryandMolecularSciences,WuhanUniversity,Wuhan430072,China;2.InstituteofResearchandDesigning,WuhanUniversityofTechnology,Wuhan430072,China)1,2,1,1(1.,430072;2.,430072)[]-,、、,:5mmol/L、30℃、12h。、,。,。[];;;[]TQ316.343[]B[]1005-829X(2010)07-0046-04Abstract:Potassiumpersulphate-sodiumbisulfatehasbeenusedforinitiatingthepreparationofgraftcopolymersofsodiumalginatewithpolyacylamide.Theeffectsoftheinitiatorconcentration,reactiontemperatureandreactiontimeongraftcopolymersareinvestigated.Theoptimalconditionsareasfollows:initiatorconcentrationsare5mmol/L,re-actiontemperature30℃,andreactiontime12h.Infraredspectrumandthermogravimetricanalysisareusedtochar-acterizetheproduct.Atthesametime,theflocculatingcapacityofthiscopolymeristested.Theexperimentalresultsindicatethatflocculatingcapacityofthisgraftcopolymerisbetterthanthatofsodiumalginateandpolyacylamide.Keywords:sodiumalginate;acrylamide;graftcopolymerization;flocculation(SA),,、、〔1〕。—OH,,〔2〕。。,,〔3〕。,,,。1:S312,SSY-H,ST-DZF-6021,NEXUS670,SETSYS,JJ-,DRB200-COD,DR/890-COD,DR/890-。:(,);,,,,,,(PAM,500)。22.11g500mL,,,。10min,3.412g,10min,,30min3。1h,30720107IndustrialWaterTreatmentVol.30No.7Jul.,201046——2010-07,30(7),,,500mL,,,5h,,3,60℃24h,,〔4〕。,。V()∶V()=1∶1,。:250mL,100mL,40℃12h。,,。。,,,24h,60℃24h,〔5〕。(1)、(2):=[(W2-W0)/W2]×100%(1)=(W2/W1)×100%(2):W0———,g;W1———,g;W2———,g。2.22.2.1、,1~3。1~3,,—COO(1606cm-1、C—O(1035cm-1),,—CONH2(1689cm-1)C—CH2—C(2977cm-12831cm-1),〔6〕。2.2.2(TG)(DTG),45。100806040200350030002500200015001000500/cm-1/%1,:47——2010-07,30(7)45,,601.30℃,62.18%。3,,600.84℃,72.14%,〔7〕。33.1:m()=1g,m()=3.412g,45℃,24h,,n()∶n()1∶1,,,6。6:;>5mmol/L,,。,·SO4·HSO3,,。,,,。,5mmol/L。3.2:m()=1g,m()=3.412g,5mmol/L,24h,,,7。7,,,30℃,,。,,,,,,,,。,,30℃。3.3:m()=1g,m()=3.412g,5mmol/L,30℃,,,8。8,,,,,,。,,,,,。,24h。4200900NTU,1L,200r/min5min,,200r/min2min,50r/min10min,10min,,48——2010-07,30(7)[11].[D].:,2005.[12],,,.Fenton[J].,2005,6(10):45-48.[13].[D].:,2007.[14].[M].:,1985:192-198.[15],.[J].,1995(5):27-30.[16].pH[D].:,2007.[17],,.———[J].,2005,7(2):53-55.[](1985—),。:13270236075,E-mail:zeng-yan@163.com。[]2010-03-18()。4.1、、,9。9,、,,。,,。,,,,。4.2pHpH10。10,,,,,,,。,,ζ,,。,,,。(),。,。,。5-,、。。[][1].()[D].:,2005.[2],,.[J].,2003,23(12):45.[3],,.[J].,2007,15(15):20-24.[4]XuKaiqiang,XuXiongli,DingZhiji,etal.Synthesisandfloccula-bilityofsodiumalginatedwithacrylamide[J].ChinaParticuology,2006,4(2):60-63.[5]TripathyT,PandeySR,SinghRP,etal.Novelflocculatingagentbasedonsodiumalginateandacrylamide[J].Eur.Polym.,1999,35:2057-2072.[6],,.[M].2.:,2003:194-228.[7].[M].:,2001:424.(10)[](1982—),2009,,。:13469974670,E-mail:lizhonglin_007@163.com。[]2010-03-25()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!,:49——