Turning residues of coconut flour in bioadditive: an alternative to accelerate PCL biodegradation

Nogueira, Jessika Andrade dos Santos; Luna, Carlos Bruno Barreto; Silva, Adriano Lima da; Costa, Ana Cristina Figueiredo de Melo; Melo, João Baptista da Costa Agra de; Wellen, Renate Maria Ramos; Araújo, Edcleide Maria

doi:10.1007/s10965-023-03711-9

Cited by 1 publication

(1 citation statement)

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“…The torque is directly proportional to the viscosity; that is, higher torque is indicative of higher viscosity. 17,18 It was found that PP presented greater torque when compared to PP/ MA*. This result suggests that macaiba almond did not harm the matrix processability.…”

Section: Torque Measurementsmentioning

confidence: 89%

PP/MACAIBA almond composites: Effect of SEBS-MA and EPDMA-MA compatibilizers on the mechanical properties and biodegradation

Siqueira,

Luna,

Dos Santos Filho

et al. 2023

Journal of Elastomers & Plastics

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There is a need to develop environmentally friendly materials, especially plastics, that minimize environmental pollution. In this sense, polypropylene (PP) composites were produced with 20 wt% of Macaiba almond powder (MA*) and compatibilized with SEBS-MA and EPDM-MA to carry out a biodegradation investigation of these composites. Mechanical properties (impact, tensile), heat deflection temperature (HDT), scanning electron microscopy (SEM), and Fourier transform spectroscopy (FTIR) experiments were performed. These analyses verified that the best plasticization was reached in the composites with 15% of SEBS-MA and EPDM-MA, indicating an interaction between phases. The impact strength and elongation at break of the PP/MA*/EPDM-MA and PP/MA*/SEBS-MA composites increased significantly, suggesting tough behavior. Biodegradation occurred in the soil for 120 days, and both PP/MA*/10EPDM-MA and PP/MA*/15EPDM-MA demonstrated a mass loss of about 4.68% and 4.0%, respectively. Although PP is not biodegradable, the results show that macaíba almond powder can biodegrade in the PP matrix.

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Section: Torque Measurementsmentioning

confidence: 89%