低密度聚乙烯復(fù)合脫氧膜的制備和性能研究.pdf

1、湖北大學(xué)碩士學(xué)位論文低密度聚乙烯復(fù)合脫氧膜的制備和性能研究姓名：孫艷斌申請學(xué)位級別：碩士專業(yè)：高分子化學(xué)與物理指導(dǎo)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