网状阳离子聚丙烯酰胺的制备及其应用

《网状阳离子聚丙烯酰胺的制备及其应用》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、南京林业大学硕士学位论文网状阳离子聚丙烯酰胺的制备及其应用姓名：房兆伟申请学位级别：硕士专业：制浆造纸工程指导教师：周小凡20090601ThePreparationandApplicationofNetworkCationicPolyacrylamideABS’I’RAC’I’Basedontheradicalreactiontheory,itisrecognizedthatnetworkCPAMshouldbesynthesizedbyadoptingaqueousbiphasicpolymerizationsyste

2、mandcross-linkingtechnology．MostoftheresearchesWCFCconcentratedontheinvestigationoftheeffectoftheinitiationtemperature，pHvalue，concentrationofthemonomer,initiator，EDTA-2Na,andureaontherateofconversionandintrinsicviscosity．Bysinglefactorialexperimentdesign，theoptim

3、umparameterweregainedinemulsionpolymerization，underthecondition，aseriesofnetworkCPAM，whichwasdifferentinmolecularweightandstructure,wereprepared．Inthispaper,wefurtherinvestigateddrainageandretentionpropertiesofnetworkCPAM，undercomplicatedwetendchemistryconditions．

4、Itwasfoundthat：Inmicroparticlessystem，networkCPAMWassuperiortolinearCPAMinretentionanddrainagepropertiesunderthehighstirringstressanddosageconditions．，nlecombinationwithalinearpolymerandanetworkpolymerhasbetterretentionanddrainageperformancewithanunexpectedsynergi

5、sticeffectthananyonesinglepolymerundertheconditionofhighshearingstress，highelectricalconductivityandawiderangeofpHvalue．Moreover,thecompoundoftwoCPAMcangreatlyimprovethefirstashpassretentionandpaperformation．NetworkCPAM，comparedwithlinearCPAM，hasitsownspecialmeloc

6、ularstructure，conformationandchangeofadsorptionprocess．Byinductionanddeductionofthethreelevels，itwasconcludedthatnetworkCPAMpossibleretentionmechanisms：thecommonresultsofbridging．patchingandnetcatching．nesynergisticseffectoftwopolymercombinationcomefromtrappingsma

7、llcolloidalparticlesoflinearCPAMandantihighshear,highconductivitypropertyofmodifiedCPAM．Keywords：networkCPAM；retentionanddrainage；highshearingstress；synergisticeffect；netcatching学位论文原创性声明本人郑重声明：所呈交的学位论文，是本人在导师的指导下进行的研究工作所取得的成果．尽我所知，除文中已经特别注明引用的内容和致谢的地方外，本论文不包含任何其他

8、个人或集体已经发表或撰写过的研究成果．对本文的研究做出重要贡献的个人和集体，均已在文中以明确方式注明并表示感谢。本人完全意识到本声明的法律结果由本人承担．学位论文作者(本人签名)：廖蛳垆∥月函学位论文版权使用授权书本学位论文作者完全了解南京林业大学有关保留、使用学位论文的规定，同意学校保留并向国家有关部