Industrial & Engineering Chemistry Research
Industrial & Engineering Chemistry Research
5 years ago

Synthesis and Characterization of Bio-oil-Based Self-Curing Epoxy Resin

Synthesis and Characterization of Bio-oil-Based Self-Curing Epoxy Resin
Brian K. Via, Maria L. Auad, Mehul Barde, Gisela Buschle-Diller, Shatori Meadows, Yusuf Celikbag, Sushil Adhikari
A novel self-curing epoxy resin was synthesized using bio-oil. Bio-oil was produced by hydrothermal liquefaction of loblolly pine and utilized as a biopolyol in the synthesis of bio-oil-based epoxy resin (BOBER) for the first time. Hydroxyl groups in bio-oil were analyzed by quantitative 31P NMR. It was found that not only does the total hydroxyl number of bio-oil influence the yield and epoxy equivalent weight of BOBER, but also the distribution of hydroxyl groups within bio-oil (aliphatic, phenolic, and acidic OH) played an important role in the determination of the optimum amount of catalyst in the synthesis of BOBER. Differential scanning calorimetry analysis proved the self-curing phenomena of BOBER, and Fourier transform infrared spectroscopy suggested that etherification reaction was the dominate reaction during the self-curing. Glass transition temperature, cross-linking density, and the storage modulus of self-cured BOBER were calculated using a dynamic mechanical analyzer.

Publisher URL: http://dx.doi.org/10.1021/acs.iecr.7b02123

DOI: 10.1021/acs.iecr.7b02123

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