可生物降解聚己二酸-对苯二甲酸丁二醇酯的扩链改性
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中图分类号：063 文献标志码：A
Chain Extension Modification of Biodegradable Poly（butylene adipate-co-terephthalate）
SHI Tiantian1， KOU Xuechen²， HUANG Hao1， ZHAO Ling1， YANG Shuguang1， WANG Yun2 （1.State KeyLaboratoryof AdvancedFiberMaterials，CollgeofMaterials Sienceand Enginering，Donghua University Shanghai201620，China;2.Shenghong（Shanghai）NewMaterialTechnologyLimited Company，Shanghai 201403，China）
Abstract：By melt blending of poly（butylene adipate-co-terephthalate）（PBAT）and styrene-glycidyl methacrylate （ADR）， a series of biodegradable materials （PBAT/ADR） were prepared through a twin-screw extruder.The efects of ADRon the melt flowrate，carboxylend groupcontent，gelcontent，thermal properties，rheological propertiesand mechanical propertiesof PBATat different blending temperatures were investigated.The results showed that the melt flowrate of the polymer PBAT/ADR decreased significantly with the increase of ADR content. When the mass ratio of ADR to PBAT was 1.8：100 0 the melt flowratemet the industrial productionrequirements.Inadition，withtheincreaseof temperature，the terminal carboxylcontentofPBAT/ADR decreased significantly，whilethegelcontent increasedsignficantlywhich provedthatthe crosslinking reactionbetween PBATand ADRoccurred and the branched macromolecularstructure was formed.With the increaseof temperature，thecrystalizationtemperatureofPBAT/ADR decreased slightly，andthe glasstransition temperature andthermaldecompositiontemperature increased.TheviscoelasticityofPBATwassignificantlyenhancedafter theaddition of ADR.The branched cross-linked structure was formed inside.The processng performance was changed. Compared with pure PBAT， te tensile strength of PBAT/ADR increased and the elongation at break increased significantly.The maximum tensile strength was 19.2MPa and the elongation at breakwas 1036.3%
Key words： poly（butylene adipate-co-butylene terephthalate）；styrene-glycidylmethacrylate oligomer;biodegradable; melt blending； chain extender
随着塑料制品的应用日益广泛，由此产生的塑料废弃物数量也与日俱增[1-3]。（剩余13215字）