Synthesis and Characterization of Polymeric Materials from Vegetable Oils

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 CC 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).

Synthesis and Thermomechanical Properties of Polyurethanes and Biocomposites Derived from Macauba Oil and Coconut Husk Fibers

“…With 39% of its fatty acid chains being oleic acid, and 5% being linoleic acid [27], the chemical structure of MO shows potential for polymerization through the preliminary preparation of polyols and their subsequent polycondensation with diisocyanates for the synthesis of bio-based PUs. , respectively), and C=O stretch deformation at approximately 1746 cm −1 [28][29][30]. On the FTIR spectrum of BIMO, the product of the transesterification of MO with methanol, a change on the profile of the peaks in the 1000-1400 cm −1 range can be observed, along with the appearance of a typical ester band at 1035 cm −1 (Figure 1) [31,32].…”

Physicochemical and rheological properties of passion fruit oil and its polyol

“…Separation of the fatty acid esters is based on chain length, degree of saturation, as well as the geometry, and position of the double bonds [19]. Table 1 presents the fatty acids composition of PFO examined here [20] in comparison with fatty acids compositions of other works [6,7,[21][22][23].…”

“…Ferrari et al [6] Sant'anna et al [7] Lopes et al [20] Kobori and Jorge [21] Nyanzi et al [22] Miristic acid, C 14:0 0.08 0.08 ---Palmitic acid, C 16 shows considerable chemical changes. Otherwise, if the oil presents a high saponification index, it indicates the presence of alkali reagent.…”

Styrenated urethane oil synthesis via CuAAC “click” chemistry approach

“…Triglyceride oils have been substantially utilized for the production of organic coatings, biomaterials, paints, inks, lubricants, plasticizers, agrochemicals and polyurethane foams [1][2][3][4][5]. Even though triglyceride oils cannot be directly used in coating applications, they can be successfully used after applying various modification methods in this field [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

“…Even though triglyceride oils cannot be directly used in coating applications, they can be successfully used after applying various modification methods in this field [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. One of the most popular modification techniques is the copolymerization of triglyceride oils with vinyl monomers, most extensively with styrene (St).…”