Biodegradation Study of Polyurethanes from Linseed and Passion Fruit Oils
Source abstract
Abstract
Bio-based polyurethanes (PU) have been developed as biodegradable and biocompatible, promising materials. In this work, PU foams with interesting properties and biodegradable characteristics were prepared from the polyols of linseed oil (LO) and passion fruit oil (PFO). The PUs reported herein were synthesized in 0.8 and 1.2 [NCO]/[OH] molar ratios, and were submitted to a soil degradation test, followed by analyses via scanning electron microscopy (SEM), stereomicroscope, thermogravimetry (TG/DTG), and Fourier transform infra-red (FTIR) spectroscopy. The results obtained indicate significant biodegradation activity. SEM micrographs of the PUs after soil the degradation test showed that the materials were susceptible to microbiological deterioration. TG/DTG curves showed that the PU samples were less thermally stable after the period of landfill than those freshly prepared. FTIR spectroscopy was used to identify chemical changes that occurred during biodegradation.
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Research context
OpenAlex topics: Polymer composites and self-healing · biodegradable polymer synthesis and properties · Lignin and Wood Chemistry
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculdade do Gama, Universidade de Brasília, Brasília 70910-900, Brazil
Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal
Chemistry Department, Georgia Southern University, Statesboro, GA 30458, USA
Laboratório de Microscopia Eletrônica, Centro Nacional de Pesquisa de Recursos Genéticos e Biotecnologia (CENARGEN)-Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), Brasília 70770-901, Brazil
Departamento de Engenharia, Universidade da Região de Joinville, Joinville 89219-710, Brazil
Instituto de Química, Universidade de Brasília, Brasília 70910-900, Brazil
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