Synthesis and Characterization of Polymeric Materials from Vegetable Oils |
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Authors: | Roseany V. V. Lopes Nuno Pedro D. Loureiro José R. Zamian Pâmela S. Fonseca Júlio L. Macedo Maria L. dos Santos Maria J. A. Sales |
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Affiliation: | 1. Laboratório de Pesquisa em Polímeros, Instituto de Química - Universidade de Brasília, Brasília-DF, Brasil, ZIP CODE 70904-970, PO BOX 04478;2. Departamento de Química – Universidade de Aveiro - Campus Universitário de Santiago 3810 - 193 Aveiro, Portugal;3. Departamento de Química – Universidade Federal do Pará, Belém-PA, Brasil, ZIP CODE 66035-340 |
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Abstract: | Although the petrochemical polymers have revolutionized the technological development, the intensive use of these materials have contributed to the global pollution. In this context, researches involving ecofriendliness materials are growing up, as well as, a current interest in developing materials from inexpensive and renewable resources, such as vegetable oils. In this work, is described the synthesis of polymeric materials by thermal polymerization from linseed oil (Linum usitatissimum L.) and passion fruit oil (Passiflora edulis) and their characterization by gas chromatographic (GC), Fourier transform infrared (FTIR) spectroscopy, solubility in organic solvents, thermogravimetry (TG), differential scanning calorimetry (DSC) and Raman spectroscopy. The TG curve shows that those polymeric materials present two stages of decomposition. DSC plots of the vegetable oils showed some endothermic and exothermic transitions which are not present in the DSC curves corresponding to oil-based polymers. The Raman spectra of the polymers indicate declining of absorbance in the region of CC stretching (∼1600 cm−1). This absorption was used to estimate the degree of polymerization (79% and 67.5% for linseed and passion fruit oils, respectively). |
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Keywords: | materials thermal analysis vegetable oils |
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