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Iranian Polymer Journal

, Volume 28, Issue 12, pp 1045–1055 | Cite as

Investigation of degradation of polypropylene in soil using an enzymatic additive

  • Jéssica Pereira Pires
  • Gabriela Messias Miranda
  • Gabriela Lagranha de Souza
  • Flávia Fraga
  • Alessandro da Silva Ramos
  • Gabriel Espindola de Araújo
  • Rosane Angélica Ligabue
  • Carla Maria Nunes Azevedo
  • Rogerio Vescia Lourega
  • Jeane Estela Ayres de LimaEmail author
Original Research
  • 18 Downloads

Abstract

Polypropylene (PP) has been widely used industrially in several sectors, mainly in the use of packaging of different products. Thus, this has been accumulated in our environment due to the incorrect disposal and its high resistance toward degradation, causing an array of environmental impacts. With this, one alternative that has been explored to minimize the problems intensified by these residues is the use of pro-degrading additives. Therefore, the aim of this work is to evaluate the degradation process of PP blends in soil using enzymatic additive. The soil degradation experiment was done for 6 months; monthly collected samples were checked for alterations on the material properties during that time. The extent of PP degradation with enzymatic additive was compared to an organic additive by techniques of FTIR, TGA, DSC, carbonyl index (CI), and crystallinity. From the obtained results it was observed that the additives influenced the degradation of PP. In addition, the enzymatic additive caused more significant changes in the CI (increase of 3693%), crystallinity (variation of 18.7%), and structural characteristics, indicating a greater influence on the degradation process in relation to the organic additive. In this way, this work has had an important role in the research and development of biodegradable materials with the aim of minimizing the effects induced by plastic waste in the environment.

Keywords

Polypropylene Pro-degradant Additive Degradation Enzymatic Organic 

Notes

Acknowledgements

The present work was performed with the support of Coordination of Improvement of Higher Level Personnel—Brazil (CAPES)—Finance Code 001, and Brasilata Company.

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Copyright information

© Iran Polymer and Petrochemical Institute 2019

Authors and Affiliations

  • Jéssica Pereira Pires
    • 1
    • 2
  • Gabriela Messias Miranda
    • 2
    • 3
  • Gabriela Lagranha de Souza
    • 2
  • Flávia Fraga
    • 2
  • Alessandro da Silva Ramos
    • 1
    • 3
  • Gabriel Espindola de Araújo
    • 2
  • Rosane Angélica Ligabue
    • 2
    • 3
  • Carla Maria Nunes Azevedo
    • 2
  • Rogerio Vescia Lourega
    • 1
    • 2
    • 3
  • Jeane Estela Ayres de Lima
    • 1
    • 2
    • 3
    Email author
  1. 1.Institute of Petroleum and Natural ResourcesPontifical Catholic University of Rio Grande do SulPorto AlegreBrazil
  2. 2.Polytechnic SchoolPontifical Catholic University of Rio Grande do SulPorto AlegreBrazil
  3. 3.Graduate Program in Materials Engineering and Technology, Polytechnic SchoolPontifical Catholic University of Rio Grande do SulPorto AlegreBrazil

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