Combinations of soy protein and polyacrylate emulsions as wood adhesives

Combinations of soy protein and polyacrylate emulsions as wood adhesives A series of soy protein-polyacrylate emulsions (SPCE) used for wood adhesives were synthesized by blending soy protein in aqueous solution and polyacrylate emulsion with various mass fractions. The chemical composition and performance properties of these blends were then characterized by FT-IR viscometry, contact angle analysis, scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and shear strength. It was found that the apparent viscosity of these blended emulsions decreased with higher levels of polyacrylate emulsion, which could facilitate the wetting and penetrating of wood. FT-IR analysis suggested that hydrogen bonds were formed in the blends. The introduction of polyacrylate copolymers containing neutralized poly(acrylic acid), as well as a small amount of emulsifiers, can enhance the wettability of blended emulsions and facilitate their application as wood adhesives. The shear strength of plywood prepared using these adhesives and their thermal stability were improved after the introduction of the polyacrylate copolymers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Adhesion and Adhesives Elsevier

Combinations of soy protein and polyacrylate emulsions as wood adhesives

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0143-7496
D.O.I.
10.1016/j.ijadhadh.2018.01.002
Publisher site
See Article on Publisher Site

Abstract

A series of soy protein-polyacrylate emulsions (SPCE) used for wood adhesives were synthesized by blending soy protein in aqueous solution and polyacrylate emulsion with various mass fractions. The chemical composition and performance properties of these blends were then characterized by FT-IR viscometry, contact angle analysis, scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and shear strength. It was found that the apparent viscosity of these blended emulsions decreased with higher levels of polyacrylate emulsion, which could facilitate the wetting and penetrating of wood. FT-IR analysis suggested that hydrogen bonds were formed in the blends. The introduction of polyacrylate copolymers containing neutralized poly(acrylic acid), as well as a small amount of emulsifiers, can enhance the wettability of blended emulsions and facilitate their application as wood adhesives. The shear strength of plywood prepared using these adhesives and their thermal stability were improved after the introduction of the polyacrylate copolymers.

Journal

International Journal of Adhesion and AdhesivesElsevier

Published: Apr 1, 2018

References

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