PETTiO,2纳米复合材料的制备及性能研究

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1、AllthephenomenontoldUSthattheadditionoftheTi02promotedthephotodegradationofPET．TheeffectofTi02paniclesonthenon-isothermalcrystallizationbehaviourofPETwasinvestigatedbydifferentialscanningcalorimetry(DSC)．Threemethods，namely,Avrami，OzawaandMe，wereadopte

2、dtoanalyzethenon—isothermalcrystallizationdata．TheresultsshowedthattheTie2inPETactedaseffectivenucleationagent，andPETⅢ012crystallizedathighertemperaturebecauseofthepresenceofTie2．AlsoTi02acceleratedthecrystallizationofPET,shortedcrystallizationtime，and

3、improvedthedegreeofcrystallization．TGthermalanalyzerwasusedtoexaminethethermaldegradationbehaviorsofPETandPET／Ti02．ThethermaldegradationkineticswereanalyzedbyFriedmanmethodandOzawamethod．TheresultsshowedthatthethermalstabilityofPETfri02nanocompositeswa

4、sbetterthanthatofpurePET．TheCombustionPropertiesofpurePETandPET厂ri02compositewereinvestigatedbycombustion．Theresultsshowedthatthemassloss(％)andtheheatreleaserate(HRR)ofPE们i02a他alllowerthanthoseofpurePET．Atthesametime，Thethetotalsmokeproduction(TSP)ands

5、mokeproductionrate(SPR)ofPET厂ri02nanocopositeswerealinlelowerthanthoseofpurePET-AllthephenomenonshowedUSthatadditionofTi02improvedtheflameretardationofPET．Keywords：PET；Ti02；in—situpolymerization；nanocomposite：舞}】目录㈩IIIIIIIIIIIllItIIfY1733792第一章绪论⋯⋯⋯⋯⋯⋯

6、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯l1．1引言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．2纳米材料和无机纳米复合材料的特性⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21．2．1纳米材料的特性⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．31．2．2无机纳米复合材料的特性⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．41．3纳米Ti02的概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯51．3．1纳米Ti02的性质⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

7、⋯⋯．71．3．2纳米q'i02的制备⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯71．3．3纳米Ti02的应用⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯91．3．4纳米Ti02的表面改性⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ll1．4PET／Ti02纳米复合材料研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯131．5聚合物的降解⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．141．5．1可降解高分子的分类⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯151．5．2PET聚酯环境可降解性的目的与意

8、义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯161．6本论文研究的目的及意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。17第二章PET／Ti02纳米复合材料的制备及表征⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯192．1引言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．192．2PETFFi02纳米复合材料的制备⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．192．2．1原料与仪器⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯l92．2．2PET／Ti02纳米复合材