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Study on Mechanical and Thermal Properties of Poly(Lactic acid)/Poly(Butylene adipate-co-terephthalate)/Office Wastepaper Fiber Biodegradable Composites

  • Chong Xu
  • Xiaolin ZhangEmail author
  • Xiao Jin
  • Sunjian Nie
  • Rui Yang
Original paper
  • 20 Downloads

Abstract

Office wastepaper fibers(OWF)/poly(butylene adipate-co-terephthalate) (PBAT)/poly(lactic acid) (PLA) biodegradable composites with different mass ratio were made by melt blending and injection moulding process. At the same time, the use of MAPLA and KH560 was studied as a potential approach for improving interfacial adhesion between OWF, PBAT and PLA. The results revealed that with the increasing of PBAT, the notched impact strength of PLA/PBAT/OWF composites can be first increased and then decreased. When the content of PBAT was 20 wt%, the notch impact strength of PLA/PBAT/OWF composite was the highest, increased by 291% compared with pure PLA. TGA results revealed that the onset degradation temperature of the composites can be increased and its thermal decomposition step can be changed. According to the crystallization and melting performance table, OWF can act as nucleating agent to promote the crystallization properties of composites, while PBAT can prevent the crystallization and the higher the content is, the more obvious it is. It can be seen from the SEM figures that the addition of MAPLA and KH560 simultaneously makes the composites interface bond closer, thus improving the interface performance of PLA/20PBAT/OWF composite. Among the three kinds of modified composites, PLA/20PBAT/OWF/MK composite has the lowest water absorption and the best comprehensive performance.

Keywords

Biocomposite Mechanical properties Thermal properties Interface modification 

Notes

Acknowledgements

Authors gratefully acknowledge financial supports from Natural Science Foundation of Shaanxi Province (2015JM3080), the Special Research Foundation of Xi’an University of Technology (2014TS008), and the Foundation of Xi’an Beilin District (GX1712).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Chong Xu
    • 1
  • Xiaolin Zhang
    • 1
    Email author
  • Xiao Jin
    • 1
  • Sunjian Nie
    • 1
  • Rui Yang
    • 1
  1. 1.Faculty of Printing, Packing Engineering and Digital Media TechnologyXi’an University of TechnologyXi’anPeople’s Republic of China

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