Li, H.; Wang, S.; Zhang, X.; Wu, H.; Wang, Y.; Zhou, N.; Zhao, Z.; Wang, C.; Zhang, X.; Wang, X.; Li, C. Synthesis and Characterization of an Environmentally Friendly Phenol–Formaldehyde Resin Modified with Waste Plant Protein. Polymers2023, 15, 2975.
Li, H.; Wang, S.; Zhang, X.; Wu, H.; Wang, Y.; Zhou, N.; Zhao, Z.; Wang, C.; Zhang, X.; Wang, X.; Li, C. Synthesis and Characterization of an Environmentally Friendly Phenol–Formaldehyde Resin Modified with Waste Plant Protein. Polymers 2023, 15, 2975.
Li, H.; Wang, S.; Zhang, X.; Wu, H.; Wang, Y.; Zhou, N.; Zhao, Z.; Wang, C.; Zhang, X.; Wang, X.; Li, C. Synthesis and Characterization of an Environmentally Friendly Phenol–Formaldehyde Resin Modified with Waste Plant Protein. Polymers2023, 15, 2975.
Li, H.; Wang, S.; Zhang, X.; Wu, H.; Wang, Y.; Zhou, N.; Zhao, Z.; Wang, C.; Zhang, X.; Wang, X.; Li, C. Synthesis and Characterization of an Environmentally Friendly Phenol–Formaldehyde Resin Modified with Waste Plant Protein. Polymers 2023, 15, 2975.
Abstract
To develop a lower-cost, excellent performance, and environmentally friendly phe-nol-formaldehyde (PF) resin, soybean meal was used to modify PF resin, and soybean meal-phenol-formaldehyde (SMPF) resins were prepared. Their physicochemical properties and curing performance were investigated, showing that SMPF resins have higher curing tempera-tures than PF resin. The Fourier transform infrared spectroscopy (FTIR) results indicated that the cross-linking reaction occurred between the amino groups of soybean protein and the hy-droxymethyl phenol. Moreover, with the addition of soybean meal, the viscosity of SMPF in-creased while the gel time decreased. It is worth mentioning that SMPF-2 resin has favorable viscosity, short gel time, low curing temperature (135.78 °C), and high water resistance and bonding strength (1.01 MPa). Finally, all the plywoods bonded with SMPF resins have good water resistance and bonding strength, which could meet the Standard (GB/T 17657-2013, type I) for plywood. The optimized SMPF resins showed the potential application to replace part of PF resin in the wood industry.
Chemistry and Materials Science, Paper, Wood and Textiles
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