一种由牡丹籽粕制成的创新生物质木材粘合剂：其制备和性能,Journal of Applied Polymer Science

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一种由牡丹籽粕制成的创新生物质木材粘合剂：其制备和性能
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2024-02-23 , DOI: 10.1002/app.55336
Binghan Zhang ₁ , Baicheng Guo ₁ , Shihan Wang ₁ , Jiahui Zhang ₁ , Can Liu ₂ , Zhenhua Gao ₃

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基于植物蛋白的粘合剂，特别是源自豆粕 (SM) 的粘合剂，已可用于各种产品应用。然而，尽管产能充足，但SM的高成本限制了大规模制造。牡丹籽粕（PSM）富含蛋白质、多糖和多酚，PSM中的蛋白质含有高度疏水性氨基酸，导致其水溶性和持水性较低。 PSM蛋白中疏水性氨基酸的独特组成是否可以增强PSM基粘合剂的耐水性是值得研究的。此外，PSM 的价格较低（约为 SM 成本的三分之二），使其成为更有价值的粘合剂原材料。在此，我们报告了一种利用高活性交联剂聚酰胺-环氧氯丙烷（PAE）制备PSM基木材粘合剂的简单实用的方法。结果表明，PSM基胶粘剂具有优异的粘合力，特别是“PSM-36%”胶粘剂，湿态粘合强度和老化粘合强度分别达到1.60和0.83 MPa，满足室内用胶合板的标准（ ≥0.98兆帕）。机理研究表明，这种PSM基粘合剂的粘合机理可能涉及高固含量、低粘度、高热稳定性以及共价键和氢键网络的形成。

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An innovative biomass-based wood adhesive generated from peony seed meal: Its preparation and properties

Plant protein-based adhesives, particularly those derived from soybean meal (SM), have been available for various product applications. However, the high cost of SM has limited large-scale manufacturing, despite sufficient production capacity. Peony seed meal (PSM) is abundant in proteins, polysaccharides, and polyphenols, the protein in PSM contains highly hydrophobic amino acids, resulting in low water solubility and water holding capacity. It is worth investigating whether the unique composition of hydrophobic amino acids in PSM protein can enhance the water resistance of PSM-based adhesives. Additionally, the lower price of PSM, which is approximately two-thirds of the cost of SM, makes it a more valuable raw material for adhesives. Herein, we report a simple and practical approach for preparing PSM-based wood adhesives by utilizing the highly active cross-linking agent of polyamidoamine-epichlorohydrin (PAE). The results showed PSM-based adhesives possessed excellent adhesion, especially the adhesive of “PSM-36%”, with the wet bond strength and the aged bond strength reaching 1.60 and 0.83 MPa, respectively, meeting the standards outlined for indoor-use plywood (≥0.98 MPa). Mechanistic studies indicated that the adhesion mechanism of such PSM-based adhesives might involve high solid content, low viscosity, high thermal stability, and the formulation of covalent bonds and hydrogen bond networks.

更新日期：2024-02-23

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