Preparation of Renewable Bio-Polyols from Two Species of Colliguaja for Rigid Polyurethane Foams

Abstract

In this study, we investigated the potential of two non-edible oil extracts from seeds of Colliguaja integerrima (CIO) and Colliguaja salicifolia (CSO) to use as a renewable source for polyols and, eventually, polyurethane foams or biodiesel. For this purpose, two novel polyols from the aforementioned oils were obtained in a one-single step reaction using a mixture of hydrogen peroxide and acetic acid. The polyol derivatives obtained from the two studied oils were characterized by spectral (FTIR, 1H NMR, and 13C NMR), physicochemical (e.g., chromatographic analysis, acid value, oxidizability values, iodine value, peroxide value, saponification number, kinematic viscosity, density, theorical molecular weight, hydroxyl number, and hydroxyl functionality) and thermal (TGA) analyses according to standard methods. Physicochemical results revealed that all parameters, with the exception of the iodine value, were higher for bio-polyols (CSP and CIP) compared to the starting oils. The NMR, TGA, and FTIR analyses demonstrated the formation of polyols. Finally, the OH functionality values for CIP and CSP were 4.50 and 5.00, respectively. This result indicated the possible used of CIP and CSP as a raw material for the preparation of polyurethane rigid foams.

Optimisation of Epoxide Ring-Opening Reaction for the Synthesis of Bio-Polyol from Palm Oil Derivative Using Response Surface Methodology

“…It has been predicted to increase to over 20 million tons in 2020. Therefore, palm oil and its derivatives are a great eco-friendly renewable resource for bio-based polyurethane materials due to their low cost and abundance of supply [ 10 , 15 ]. Palm oil consists of 53.4% saturated and 46.6% unsaturated fatty acids.…”

Structural and Rheological Properties of Nonedible Vegetable Oil-Based Resin

“…This involved the existence of active functional groups such as hydroxyl of the fatty acid chain. However, the analysis was relatively valid to give important information for an average chemical structure of the whole PU [ 42 ]. In this study, it is noted that some of the glycerol moieties probably did not show any signal during the 1 H NMR analysis, as it is too small compared to the whole chemical structure of the jatropha oil-based PUA.…”

“…This was evidenced by the new peak that was detected in the range from 3.27 to 3.83 ppm. According to Abril-Milán et al, and Ling et al, this peak corresponded to the (–C H –OH) of the hydroxyl group [ 42 , 45 ]. Furthermore, the hydroxyl value (OHV) for JOL was stated as 149.44 ± 0.23 mg KOH/g in the previous work [ 21 ].…”

Recent Advances in Development of Waste-Based Polymer Materials: A Review

“…However, it should be taken into account that oil plants can be grown in post-industrial areas where oils cannot be obtained for food purposes. Bio-polyols can also be synthesized from inedible oils such as used cooking oil, tall oil, mustard oil, cashew nut shell liquid, and other sources [117][118][119][120][121].…”