Biodegradable Foaming Material of Poly(butylene adipate-co-terephthalate)(PBAT)/Poly(propylene carbonate)(PPC)  

作　　者：Han-Lin Tian Ze-Peng Wang Shi-Ling Jia Hong-Wei Pan Li-Jing Han Jun-Jia Bian Ying Li Hui-Li Yang Hui-Liang Zhang 

机构地区：[1]Changchun University of Technology,School of Chemical Engineering,Changchun 130012,China [2]Key Laboratory of Polymer Ecomaterials,Chinese Academy of Sciences,Changchun Institute of Applied Chemistry,Changchun 130022,China [3]Jilin COFCO Biochemistry Packaging Co.,Ltd.,Liaoyuan 136300,China

出　　处：《Chinese Journal of Polymer Science》2022年第2期208-219,共12页高分子科学（英文版）

基　　金：financially supported by the National Key Research and Development Program of China(No.2016YFC0501402);Science and Technology Services Network Program of Chinese Science Academy(STS Project)(No.KFJSTS-ZDTP-082);Chinese Academy of Sciences(Changchun Branch)(Nos.2020SYHZ0002 and No.2020SYHZ0047)。

摘　　要：A biodegradable blend foaming material of poly(butylene adipate-co-terephthalate)(PBAT)/poly(propylene carbonate)(PPC)was successfully prepared by chemical foaming agent and screw extrusion method.First,PBAT was modified by bis(tert-butyl dioxy isopropyl)benzene(BIBP)for chain extension,and then the extended PBAT(E-PBAT)was foamed with PPC using a twin(single)screw extruder.By analyzing the properties of the blends,we found that Young’s modulus increased from 58.8 MPa of E-PBAT to 244.7 MPa of E-PBAT/PPC 50/50.The viscosity of the polymer has a critical influence on the formation of cells.Compared with neat PBAT(N-PBAT),the viscosity of E-PBAT increased by 3396 Pa·s and E-PBAT/PPC 50/50 increased by 8836 Pa·s.Meanwhile,the dynamic mechanical analysis(DMA)results showed that the storage modulus(E’)at room temperature increased from 538 MPa to 1650 MPa.The various phase morphologies(“sea-island”,“quasi-co-continuous”and“cocontinuous”)and crystallinity of the blends affected the spread velocity of gas and further affected the foaming morphology in E-PBAT/PPC foam.Therefore,through the analysis of phase morphology and foaming mechanism,we concluded that the E-PBAT/PPC 70/30 component has both excellent strength and the best foaming performance.

关 键 词：Poly(butylene adipate-co-terephthalate) Poly(propylene carbonate) Phase structure Biodegradable foam Extrusion foaming 

分 类 号：TQ328[化学工程—合成树脂塑料工业]