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Comparative Analysis of Processing Techniques’ Effect on the Strength of Carbon Black (N220)-Filled Poly (Lactic Acid) Composites

  • A. V. Rane
  • K. KannyEmail author
  • A. Mathew
  • T. P. Mohan
  • S. Thomas
Article
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Carbon black (CB)-filled polylactic acid (PLA) composites attract a significant interest due to their superior structural and functional performances. Properties of CB-filled PLA composites depend on physical and chemical interactions in them. In this study, interactions within CB (N220)-filled PLA composites as a function of processing method, filler concentration, and their effect on mechanical properties are investigated via mechanical tests. Strong interface interaction at intermediate concentration of 2.5 wt.% CB with PLA was confirmed through mechanical tests. Moreover, a 2.5 wt.% of CB-formed networks within PLA composites, which added the fracture resistance in the weaker phase, thereby improving their mechanical properties. Beyond 2.5 wt.%, a linked skeletal grid was formed, enhancing the fracture path in a weaker phase and deteriorating the mechanical properties. Experimental results on density and elastic modulus were compared with the theoretical model predictions. This study gives an insight on interactions controlling physical and mechanical properties related to various processing techniques and weight percent of CB in PLA composites.

Keywords

carbon black (CB) polylactic acid (PLA) interaction dissolution–dispersion melt mixing mechanical properties 

Notes

Acknowledgments

The first author is thankful to CSIR and DST – South Africa for their CSIR – DST InterProgramme Bursary Award in area of composites. Authors also extend their thanks to Durban University of Technology, South Africa, and Mahatma Gandhi University, Kerala, India for their facilities to carry out this work. The first author also extends his thanks to Mr. T. A. Sajith of the University of Technology MARA (Malaysia) for the discussion on the mechanical properties of materials.

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Copyright information

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

Authors and Affiliations

  • A. V. Rane
    • 1
  • K. Kanny
    • 1
    Email author
  • A. Mathew
    • 2
  • T. P. Mohan
    • 1
  • S. Thomas
    • 3
  1. 1.Composite Research Group, Department of Mechanical EngineeringDurban University of TechnologyDurbanSouth Africa
  2. 2.Vimala College (Autonomous)Thrissur – Affiliated to University of CalicutKeralaIndia
  3. 3.School of Chemical Sciences and International and Interuniversity Centre for Nanoscience and NanotechnologyMahatma Gandhi UniversityKottayamIndia

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