低密度聚乙烯復合脫氧膜的制備和性能研究.pdf

1、湖北大學碩士學位論文低密度聚乙烯復合脫氧膜的制備和性能研究姓名：孫艷斌申請學位級別：碩士專業(yè)：高分子化學與物理指導教師：葉正濤20080501AbstractThetensileandoxygendepletionpropertiesofLDPEresinsblendedwithvaryingcompositionsofiton(Fe)，modifiediton(MFesaCI，MFecus04andMFeNaCICuS04)and／o

2、rascorbicacid(VC)orsodiumascorbate(SA)oxygenscavengersweresystematicallyinvestigatedOxygendepletionexperimentsclearlysuggestthattheoxygendepletionratesofSAfilledL95(SA)5sampleiSmuchfasterthanthoseof15(Vc)5，Lgs(Fe)5，L95(M

3、FeNaa)5，L95(MFecus04)5andL95(MFeNaCICuso&samplesfilledwiththesameweightloadingsofascorbicacid，ironpowdersandmodifiediron(MFesaCI，MFecus04andMFeNaclCuS04)respectivelyAfterblendingSAtogetherwithmodifiediron(MFeNaa，MFecus04

4、andMFeNaclCuS04)oxygenscavengercompoundsintheLDPEresinsa“synergistic’’effectontheoxygendepletionpropertiesoftheL95[SA。(MFeN。a)y】5，L95[SAx(MFec。S04)y】5andLgs[SAx(MFeNaCIcus04)d5sampleswasobservedInfact，theL95[SA9(MFeNaa)1

5、15，Los[SAg(MFecus04)I]5andtgs[SA7(MFesaCICuS04)315samplesexhibitthefastestoxygendepletionratesineachoftheoxygenabsorbedseriessamples，respectivelywhereintheresidualoxygenconcentrationsvaluespresentintheairtightnaskoftgs[S

6、A9(MFesacl)1]5，L95[SA9(MFecus04)1]5andL95[SA7(MFeNaClcus04)315specimensatvaryingtimearelowerthanthoseofcorrespondingL95(SA)5specimensatvaryingtimeAndtheL95[SA7(MFeNaCICUS04)315filmspecimenswerefoundasefficientoxygenabsor

7、bableresinstopreventthelipidoxidationofamodeledfoodsampleFurthertensileexperimentsshowthat，L95(Fe)5andL95(MFeNacos，I95(MVecus04)5andL95(MFeNaClCuS04)5samplesexhibitsignificantlyhigherSfandefvaluesthanLgs(SA)5seriessample

8、sfilledwiththesameoxygenscavengercontentsInfact，theSfandefvaluesofthetos[SAx(MFeNaa)y】5，b5【SAx(MFecus04)y】5andL95[SAI(MFeNaacuS04)y】5seriessamplesincreasesignificantlyastheirSAloadingspresentinoxygenscavengercompoundsred