Biodegradable PBAT-Based Nanocomposites Reinforced with Functionalized Cellulose Nanocrystals from Pseudobombax munguba: Rheological, Thermal, Mechanical and Biodegradability Properties

  • I. F. Pinheiro
  • F. V. FerreiraEmail author
  • G. F. Alves
  • A. RodolfoJr.
  • A. R. Morales
  • L. H. I. Mei
Original Paper


Cellulose nanocrystals (CNC) were isolated from Munguba (Pseudobombax munguba) fibers and then functionalized with octadecyl isocyanate. Nanocomposites based on poly(butylene adipate-co-terephthalate) (PBAT) were prepared with different concentrations of cellulose nanocrystals (3, 5 and 7 wt%). We show that the addition of functionalized CNC leads to PBAT-based nanocomposites with enhanced thermal, rheological and mechanical performances, maintaining the biodegradability of the matrix. The better properties of the nanocomposites were related to the optimal amount and the uniform dispersion of CNC in PBAT. The study here presented expands the application of Munguba fibers, exploring their use to prepare PBAT-based biodegradable nanocomposites with improved properties. These nanocomposites have potential for replacement the conventional polymers in future applications with the advantage of exhibiting biodegradability.


Cellulose nanocrystals Pseudobombax munguba Poly(butylene adipate-co-terephthalate) Biodegradable polymer nanocomposites Mechanical properties Biodegradation 



The authors acknowledge the São Paulo Research Foundation – FAPESP (Grant 2016/09588-9 – Ph.D. fellowship of F.V.F), CAPES, FAPEAM and CNPq for financial support. The authors also thank Espaço da Escrita – Pró-Reitoria de Pesquisa – UNICAMP for the language services provided.


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

Authors and Affiliations

  1. 1.School of Chemical EngineeringState University of Campinas (UNICAMP)CampinasBrazil
  2. 2.Braskem S/ASão PauloBrazil

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