丙烯腈接枝淀粉合成强阴离子絮凝剂宋辉

宋　辉　　马希晨(,116034):,,,,。::5mmol/L,m()∶m()=1∶1.8,35℃,2h,120.7%,90.6%;:8%10%,pH12.5,2h;:pH1011,3035℃,2h;:pH1012,5055℃,2h。CODHPAM。:　　　　　、、,,、、,[15]。,,,、。1　　1.1　,,;,;,,;,,;,,。1.2　　StCHOHCHOH,:StCHOHCHOH+CH2CHCNStCOCH2CHCN:StCOCH2CHCN+NaOHH2OStCOCH2CHxCONH2CH2CHyCOOHCH2CHzCOONa:StCOCH2CHCONH2+HCHOpHTStCOCH2CHCONHCH2OHNaHSO3,pHTStCOCH2CHCONHCH2SO3Na、,,,。　　收稿日期:20030208;修改稿收到日期:20030424。作者简介:宋辉(1975),硕士,已发表论文8篇。20035　　　　　SPECIALITYPETROCHEMICALS3,NaOH,、,。HCHO,。NaHSO3,pH,(SAH)。1.3　,。,,,(Ws),60℃,Wg,3∶2()18h,60℃,Wp。G=(Wp-Ws)/Wp×100%GE=Wp/Wg×100%2　2.1　1。1　1,,,5mmol/L,Ce4+,。Ce4+,,;Ce4+5mmol/L,,。,5mmol/L。2.2　2。2　2,,;,。,,,,,,,,。,m()∶m()=1∶1.8。2.3　3。3　3,35℃,,,Ce4+,;,,,,。35℃,,、Ce4+,,。,35℃。313.　2.4　4。4　4,,,2h,。,,,,,;,,,,,。2h。2.5　—CN—CONH2,—COONa,—COOH,。,。,;,。8%10%,pH=12.5。,;,。,2h。2.6　,,。,N2,,Fe、Cu。,,400r/min。3　SAHHPAM,1。1　/(cm·min-1),%COD,%SAH6.591.290.1HPAM2.66372.7SAH5.880.494.6HPAM4.664.383　　:500mg/L,2.3g/L,COD464mg/L,COD685mg/L。1,SAHHPAM。,,。,,,,COD,,。4　　a.:5mmol/L,∶()=1∶1.8,35℃,2h。120.7%,90.6%。b.:8%10%,pH12.5,2h。c.:pH=1011,3035℃,2h。d.:pH=1012,5055℃,2h。　　　1　,..,1996,(6):26292　.CGSP.(6),2000:65673　.[J].,1993,(3):1401454　.-.,1990,(1):15205　YoonKJ,CarrME,BagltyEB,etal.Preparationandcharacteri-zationofsomecationicstarches.JApplPolymerSci,1992,45(6):856　,.[M].:,2001.252632　　　　　　2003＊邓新华　　孙　元　　王胜利　　陈　林(,300160):,,。25mL,PVA2.5g,6.5g,0.40.6g,75%85%,90110℃。1555,0.9%NaCl100。:　　　　　,,,。,。,[13]。,,。,,。1　、、,,、,,[46]。,,。　　、,。,,　　收稿日期:20021202;修改稿收到日期:20030402。作者简介:邓新华(1956),副教授。＊天津市自然基金资助项目(013801811)。SYNTHESISOFSTRONGANIONICFLOCCULANTBYGRAFTINGSTARCHWITHACRYLONITRILEANDSUBSEQUETTREATMENTSSongHuiandMaXichen(DepartmentofChemicalEngineering,DalianInstituteofLightIndustry,Dalian116034,China)Abstract:Thestarchwasgraftedwithacrylonitrilebygraftcopolymerization,andastronganionicflocculantwassynthsizedbyhydrolysis,hydroxymethylationandsulfonationsubsequantly.Theoptimumreactionconditionswereobtainedasfollows:graftpolymerization:c(ammoniumceriumnitrate)=5mmol/L,m(starch)∶m(acrylonitrile)=1∶1.8,35℃,2h,graftrate120.7%,graftefficiency90.6%;hydrolysis:w(alkali)=8%10%,pH12.5,2h;hydroxymethylation:pH1011,3035℃,2h;sulfonation:pH1012,5055℃,2h.Theturbidi-tyandCODremovalrateofthisproductfordyeingfactoryandpapermillwastewaterisbetterthanthatofHPAM.Keywords:starch;acrylnitrile;graft-copolymerization;flocculant20035　　　　　SPECIALITYPETROCHEMICALS3