Water Resistance of Soy Protein Based Adhesives Enhanced by Na-MMT

The adhesion strength and water resistance of soy protein based adhesives were enhanced by adding Na-montmorillonite(Na-MMT).The adhesion strength and water resistance were the highest when 1 wt%Na-MMT was added.The adhesion strength and type-Ⅱ wet strength of the poplar plywood were improved by 20.5%and 18.8%respectively.The water resistance mechanism of Na-MMT enhanced soy protein based adhesion was analyzed by using XRD,TEM,FTIR and contact angle.