Study on Soy-Based Adhesives Enhanced by Phenol Formaldehyde Cross-Linker
1
Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, China
2
College of Forestry, Guizhou University, Guiyang 550025, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Polymers 2019, 11(2), 365; https://doi.org/10.3390/polym11020365
Received: 28 January 2019
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Revised: 12 February 2019
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Accepted: 15 February 2019
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Published: 19 February 2019
(This article belongs to the Special Issue Renewable Phenolics for Innovative Composites)
To find the effects of cross-linker phenol-formaldehyde (PF) resin on the performance of soy-based adhesives, the reaction between model compounds hydroxymethyl phenol (HPF) and glutamic acid were studied in this paper. HPF prepared in laboratory conditions showed higher content of hydroxymethyl groups than normal PF resin, which was proved by the results of Electrospray Ionization Mass Spectrometry (ESI-MS) and 13C Nuclear Magnetic Resonance (13C-NMR). The results of ESI-MS, Fourier transform infrared spectroscopy (FT-IR), and 13C-NMR based on resultant products obtained from model compounds showed better water resistance of the soy protein-based adhesive modified by PF-based resin, which indicated the reaction between PF resin and soy protein. However, it seemed that the soy-based adhesive cross-linked by HPF with the maximum content of hydroxymethyl groups did not show the best water resistance.
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MDPI and ACS Style
Wu, Z.; Xi, X.; Lei, H.; Liang, J.; Liao, J.; Du, G. Study on Soy-Based Adhesives Enhanced by Phenol Formaldehyde Cross-Linker. Polymers 2019, 11, 365. https://doi.org/10.3390/polym11020365
AMA Style
Wu Z, Xi X, Lei H, Liang J, Liao J, Du G. Study on Soy-Based Adhesives Enhanced by Phenol Formaldehyde Cross-Linker. Polymers. 2019; 11(2):365. https://doi.org/10.3390/polym11020365
Chicago/Turabian StyleWu, Zhigang, Xuedong Xi, Hong Lei, Jiankun Liang, Jingjing Liao, and Guanben Du. 2019. "Study on Soy-Based Adhesives Enhanced by Phenol Formaldehyde Cross-Linker" Polymers 11, no. 2: 365. https://doi.org/10.3390/polym11020365
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