Wood adhesives fabricated from biomass can substitute formaldehyde‐based ones, reducing the consumption of fossil resources and eliminating formaldehyde pollution. In this study, a novel and sustainable water‐soluble soybean polysaccharide (WSSPS)‐based adhesive is designed. Specifically, a hyperbranched aminated polysaccharide (HBPA–g–WSSPS), as an adhesive matrix, is synthesized via grafting reaction between oxidized WSSPS and hyperbranched polyamide (HBPA). Triglycidylamine, a bio‐based epoxide cross‐linker, reacted with the HBPA–g–WSSPS to afford a cross‐linked hyperbranched network, providing strong cohesion for the adhesive. Additionally, polyacrylamide imparted an adjustable viscosity to the adhesive. The resultant WSSPS‐based adhesive enhanced the wet shear strength of plywood (1.24 MPa) by 49% compared to the E₀‐level industrial‐use melamine‐urea‐formaldehyde (MUF) resin and by 26% compared to the industrial‐use soybean meal/polyamidoamine‐epichlorohydrin (PAE) adhesive. In addition, the adhesive has characteristics similar to those of the MUF resin, including viscosity, coating performance, hot‐pressing conditions, and dry bond strength, which are superior to those of the soybean meal/PAE adhesive. This developed polysaccharide‐based adhesive can potentially enhance various composites and can be used in industrial sectors.

中文翻译：

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使用超支化胺化大豆多糖和生物基环氧化物的高性能生物粘合剂

由生物质制成的木材胶粘剂可以替代甲醛胶粘剂，从而减少化石资源的消耗并消除甲醛污染。在本研究中，设计了一种新型且可持续的水溶性大豆多糖（WSSPS）基胶粘剂。具体而言，通过氧化的WSSPS与超支化聚酰胺（HBPA）之间的接枝反应合成了作为粘合剂基质的超支化胺化多糖（HBPA-g-WSSPS）。三缩水甘油基胺（一种基于生物的环氧化物交联剂）与HBPA-g-WSSPS反应生成交联的超支化网络，为粘合剂提供了强大的内聚力。另外，聚丙烯酰胺赋予粘合剂可调节的粘度。与E ₀相比，所得的WSSPS基胶粘剂将胶合板的湿剪切强度（1.24 MPa）提高了49％。工业级三聚氰胺-脲-甲醛（MUF）树脂，与工业级豆粕/聚酰胺酰胺-表氯醇（PAE）粘合剂相比，降低了26％。此外，该胶粘剂的特性与MUF树脂相似，包括粘度，涂层性能，热压条件和干粘合强度，均优于豆粕/ PAE胶粘剂。这种开发的基于多糖的粘合剂可以潜在地增强各种复合材料，并可以用于工业领域。