Abstract
Nowadays, there is a need to obtain eco-friendly materials, especially plastics that are responsible for most of the environmental pollution. In this regard, poly(ɛ-caprolactone) PCL biocomposites with 10wt% of the oil (O) and/or 10wt% of the flour (F) extracted from the macaíba almond were produced in order to carry out a study of this polymer biodegradation acceleration. Mechanical properties (impact, traction and flexural), differential scanning calorimetry (DSC), thermogravimetric (TGA), water absorption, contact angle and analysis by optical microscopy (OM) and scanning electronics (SEM) were evaluated. Through these analyzes, it was noted that in the PCL–O biocomposite, the oil acted as a plasticizer in the PCL and in the PCL–FO biocomposite, there was an interaction among both phases. The samples biodegradation took place in accordance with ASTM G160-03 by burying impact specimens in compost for 60 days. The PCL–F biocomposite showed a mass loss of approximately 45%, followed by PCL–FO, with a loss of approximately 25%, both compositions also presented a rough morphology, with cracks and pores presence due to biodegradation from the microorganism action. These results have shown that the flour obtained from the macaíba almond is a promising agent for accelerating the PCL biodegradation.
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Acknowledgements
The authors are grateful to CNPq (National Council for Scientific and Technological Development, Brasilia/DF, Brazil) and CAPES (Coordination for the Improvement of Higher-Level Education, Brasilia/DF, Brazil) for the financial support.
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This study was financed by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES)—Finance Code 001.
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All authors participated in the drafting the article or revising it critically content, approving the final version submitted for publication. EAS: Conceptualization, methodology, formal analysis, investigation. DD: Conceptualization, methodology, formal analysis, investigation. EMA: Supervision, project administration, funding acquisition. CBB: Conceptualization, Visualization. EPM: Resources, supervision.
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dos Santos Filho, E.A., Siqueira, D.D., Araújo, E.M. et al. The Impact of the Macaíba Components Addition on the Biodegradation Acceleration of Poly (Ɛ-Caprolactone) (PCL). J Polym Environ 30, 443–460 (2022). https://doi.org/10.1007/s10924-021-02215-1
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DOI: https://doi.org/10.1007/s10924-021-02215-1