双引发反相乳液接枝共聚及其应用研究_巩冠群
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2020-02-22 18:26:59
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ReversedphaseemulsiondualinitiatorsgraftcopolymerizationanditsapplicationsGongGuanqun1,2,ZhangYingjie1,WangZiliang1,XieGuangyuan1,WuGuoguang1,TaoXiuxiang1(1.SchoolofChemicalEngineeringandTechnology,ChinaUniversityofMining&Technology,Xuzhou221116,China;2.SchoolofAppliedScienceandTechnology,ChinaUniversityofMining&Technology,Xuzhou221008,China)双引发反相乳液接枝共聚及其应用研究巩冠群1,2,张英杰1,王子良1,谢广元1,吴国光1,陶秀祥1(1.中国矿业大学化工学院,江苏徐州221116;2.中国矿业大学应用技术学院,江苏徐州221008)[摘要]通过对反相乳液淀粉接枝聚合理论的分析,以OP-10作乳化剂,Span-80强化乳化,复配协同制浆,无水亚硫酸钠和过硫酸铵作双联引发剂,分步恒温引发,制备了淀粉-丙烯酰胺(AM)-丙烯酰氧乙基三甲基氯化铵(DAC)三元高分子共聚物,研究分析了引发剂用量、反应温度和聚合时间对聚合反应作用机制的影响,用红外光谱对接枝共聚物的结构进行了表征研究。用制得的共聚物对细精煤进行絮凝沉降及过滤脱水试验和对城市难处理混合污水进行处理试验。研究结果表明,共聚反应的优化条件为:引发剂质量分数为0.15%,反应温度为35℃,反应时间为5h。红外光谱表明该共聚物为接枝产物,具有理想的助滤、脱色及絮凝沉降效果。[关键词]双引发;反相乳液聚合;絮凝剂;细精煤;污水[中图分类号]TQ314.253[文献标识码]B[文章编号]1005-829X(2010)11-0062-04Abstract:Bymeansofanalyzingthetheoryofthestarchgraftcopolymerizationwithreversedphaseemulsionpoly-merization,usingOP-10asemulsifier,andSpan-80forstrengtheningemulsion,acopolymerofstarch,acrylamide(AM)andacryloyloxyethyltrimethylammoniumchloride(DAC)hasbeenprepared.Inthecourseofcopolymeriza-tion,anhydroussodiumsulfiteandammoniumpersulfateareusedasdualinitiatorsbysteppinginthecontrolofisothermalconditions.Theeffectsofthedosageofinitiators,thereactiontemperatureandthereactiontimeonthemechanismofgraftcopolymerizationreactionarediscussed.TheproductismeasuredbyIRtoidentifytheconstruc-tionofgraftcopolymer.Thecopolymerisusedinexperimentsoffinecleancoalflocculationsedimentationandfil-trationdewatering,andurbanrefractorymixedsewageistreatedbythecopolymer.Theresultsshowthattheoptimalconditionsareasfollows:thedosageofinitiator=0.15%,reactiontemperature=35℃andreactiontime=5h.ThegraftcopolymerprovedbyIRshowsexcellentpropertiesinfiltrationaiding,decolorizingandflocculatingsettling.Keywords:dualinitiators;reversedphaseemulsionpolymerization;flocculant;finecleancoal;sewage[作者简介]杨丽云(1966—),1989年毕业于郑州工学院,副教授,在职硕士研究生。E-mail:liyunyang2007@126.com。[收稿日期]2010-07-05(修改稿)[4]TekinH,Bi
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