Preparation of Soy‐Based Adhesive Enhanced by Waterborne Polyurethane: Optimization by Response Surface Methodology

作者：Yong Wang, Layun Deng, Youhua Fan · 发表于：Advances in Materials Science and Engineering · 年份：2018 · DOI：10.1155/2018/9253670 · 被引用次数：22 · 研究领域：Polymer composites and self-healing、Natural Fiber Reinforced Composites、Polymer Nanocomposites and Properties

Response surface methodology was used to optimize the preparation conditions of soy‐based adhesives (SBAs) in this work. The parameters such as the effects and interactions of waterborne polyurethane (WPU) addition level ( X 1 ), temperature ( X 2 ), and time ( X 3 ) on wet shear strength ( Y ) were investigated. The regression model for SBA preparation was significant ( p = 0.0034 < 0.05). The coefficient of determination ( R 2 ) of this model was to be 0.9256. According to the results, WPU addition level ( X 1 ) had a significant influence on the wet shear strength, whereas reaction temperature ( X 2 ) and reaction time ( X 3 ) were not significant. The optimal preparation conditions of SBA were 12 wt.% WPU addition level for 101 min at 76°C. Under the optimal conditions, the wet shear strength was 1.07 ± 0.08 MPa, which was in good agreement with the model predicted value. An analysis of FTIR spectra of WPU, soy flour, and soy‐based adhesive further confirmed the validity of the model.