화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.38, No.8, 1746-1755, August, 2021
DOI10.1007/s11814-021-0809-1  Export Citation
Effect of glycidyl methacrylate-grafted poly(ethylene octene) on the compatibility in PLA/PBAT blends and films
Ye Zhang1, Shiling Jia1, Hongwei Pan2, Lijuan Wang1, †, Junjia Bian2, †, Yang Guan3, Bohao Li3, Huiliang Zhang2, 4, Huili Yang2, and Lisong Dong2
  • 1School of chemical engineering, Changchun University of Technology, Changchun 130012, China
  • 2Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun 130022, China
  • 3Jilin COFCO Biomaterial Co., Ltd., Changchun 130022, China
  • 4Zhejiang Zhongke Applied Chemistry Technology Co., Ltd., Hangzhou 310000, China
E-mail:,
A series of poly(lactic acid) (PLA), poly(butylene adipate-co-terephthalate) (PBAT) and glycidyl methacrylate- grafted poly(ethylene octene) (GPOE) blends and films with different GPOE content were prepared by melt blending and blowing film technique. The effect of GPOE on the rheological behavior, melt strength, crystallization behavior, crystallization morphology, miscibility, mechanical property, phase morphology, thermal stability and water vapor permeability were studied. The addition of GPOE improved melt rheological properties. Results of DSC showed that addition of GPOE encouraged the mobility of PLA molecular chains and enhanced crystalline ability. POM observations revealed that the addition of GPOE made the density of spherulite nucleation increase and the size of crystalline particles decrease. From DMA and SEM analysis, it was demonstrated that PLA/PBAT blend was an immiscible system and GPOE in the blend could improve compatibility between PLA and PBAT. Results of mechanical test showed that the PLA/PBAT/GPOE blends and films obtained had excellent mechanical properties. The elongation at break of 50/30/ 20 w/w/w PLA/PBAT/GPOE blend (477%) was higher by about 2.2 times than that of 70/30/0 w/w/w PLA/PBAT/ GPOE blend (220%). The tensile strength of all the PLA/PBAT/GPOE blends exceeded 31 MPa. The tensile strength reached 32.9MPa (MD) and 22.5MPa (TD), the elongation at break exceeded 210% and tear strength exceeded 140 kN/m for 50/30/20 w/w/w PLA/PBAT/GPOE film. With increasing GPOE content, thermal stability and water vapor barrier property also improved.
Keywords:Poly(lactic acid);Poly(butylene adipate-co-terephthalate);Glycidyl Methacrylate-grafted Poly(Ethylene Octene);Compatibilizer;Films
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