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1、羥丙基纖維素接枝改性研究（Studyongraftmodificationofhydroxypropylcellulose）Articlenumber:10044736(2000)04000604StudyongraftmodificationofhydroxypropylcelluloseYangJiamo,LiShirong,YuFaquan,BiYafan,ChenXiaoyan(Departmentofchemicalengineering,WuhanInstituteofchemistry,
2、Hubei,Wuhan430073,China)Abstract:thegraftcopolymerizationofhydroxypropylcellulosewithmethylmethacrylatewascarriedoutbyusingUVandceriumsaltsastwoinitiatorsTheeffectsofreactiontime,temperature,monomerconcentration,photosensitizerorinitiatordosageonthevisc
3、osityoftheproductwereinvestigated.TwokindsofinitiationwerecomparedTheoptimumoperationconditionofthereactionisobtainedKeywords:hydroxypropylcellulose;graftcopolymerization;modification;viscosityCLCnumber:TQ361.6,documentidentifiercode:AReceiveddate:20000
4、509Biography:YangJiamo(1949),male,ProfessorofZhangshuCity,Jiangxi.LongtermteachingandresearchworkinchemicalengineeringandChemicalTechnology0IntroductionThemolecularformulaforcottoncelluloseis(C6H10O5)n,whichisformedThechiefconstituentoftheplantcellmembr
5、ane.CelluloseinthemacromolecularstructureConsistingofrepeatedglucoseunitslinkedtothe1,4betaglycosidicbondThereactioncharacteristicofcelluloseismainlythatitsproductisinhomogeneousSexandcomplexity,themolecularstructureoftherawmaterialhasanimpactonthereact
6、ionprocessThereactionactivityisaffectedbytheneighboringfunctionalgroupandthereactionstripatthesametimeThetypeofreactionisrelatedtothereactionStepprocessingproductstomeetthequalityrequirementsofusersmoredifficult,bigManyofthemneedtoberemodifiedtoimprovet
7、heirperformanceGraftcopolymerizationisoneofthemostcommonandhasbeenprovedbypracticeThemodificationmethodwithremarkableeffectisthroughtwokindsofmacromolecularbackboneChemicallylinkedwithabranchedchaintoproduceaproductWiththecomprehensivepropertiesoftheset
8、womolecules,idealresultscanbeobtainedImproveitsphysicalandchemicalpropertiesoruseperformanceThenewproductcanbesynthesizedbythefollowingwaysThepurposeofimprovingitsqualityorperformance:(1)introducingactivegroupsonmacromolecularbac
