一次即可开发出具有高耐水性和粘接性能的聚酯型聚乙烯醇粘合剂

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2024-11-21 DOI:10.1021/acs.langmuir.4c03412

Dandan Xu, Chunyin Li, Yuchen Zhou, Zhinan Wang, Defa Hou, Hong Lei, Zhangmin Chen, Guanben Du

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引用次数: 0

摘要

水溶性聚乙烯醇（PVA）在制备环保型粘合剂方面具有巨大潜力。然而，由于 PVA 粘合剂的耐水性和防霉性较差，其在木材工业中的应用一直受到限制。本文利用 PVA 和柠檬酸（CA）合成了一种具有良好粘合性能、耐水性和防霉性能的聚酯型 PVA 粘合剂（CPVA）。傅立叶变换红外光谱（FTIR）和 X 射线光电子能谱（XPS）证实了交联反应，包括 PVA 和 CA 链之间的酯化反应以及 PVA 链之间的醚化反应。由于反应的交联结构，CPVA1（CA/PVA 的质量比 = 1:1）胶粘剂在水中浸泡 24 小时后的可溶性含量较低，仅为 5%。在 200 ℃ 下，CPVA1 胶粘剂热压胶合板的干强度、温水（63 ℃）强度和热水（93 ℃）强度分别为 1.06 1.52 和 1.45 MPa，符合中国国家标准 GB/T 9846-2015。所开发的 CPVA 粘合剂在室温下也能粘合玻璃和钢材。因此，本研究开发的 CPVA 粘合剂可作为一种潜在的候选材料，用于生产具有优异粘接强度、耐水性和防霉性的无醛木基复合材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Feasibly Developing Polyester-Type Poly(vinyl alcohol) Adhesive in One Go with High Water Resistance and Bonding Performance

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Feasibly Developing Polyester-Type Poly(vinyl alcohol) Adhesive in One Go with High Water Resistance and Bonding Performance

Water-soluble poly(vinyl alcohol) (PVA) has great potential for the preparation of environmentally friendly adhesives. However, the application of PVA adhesives in the wood industry has been limited by their poor water and mildew resistance. Herein, a polyester-type PVA adhesive (CPVA) with good bonding performance, water resistance, and antimildew performance was synthesized using PVA and citric acid (CA). The cross-linking reaction, including esterification between PVA and CA chains and etherification between PVA chains, was demonstrated by Fourier-transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS). Due to the cross-linked structure of the reaction, the CPVA1 (mass ratio of CA/PVA = 1:1) adhesive showed a low soluble content of 5% when it was soaked in water for 24 h. The dry strength, warm water (63 °C) strength, and hot water (93 °C) strength of the plywood hot-pressed from the CPVA1 adhesive at 200 °C were 1.06 1.52, and 1.45 MPa, respectively, which met the Chinese National Standard GB/T 9846-2015. The developed CPVA adhesive also adhered to glass and steel at room temperature. Therefore, the CPVA adhesive developed in this study can serve as a potential candidate for the production of nonformaldehyde wood-based composites with excellent bonding strength, water resistance, and mildew resistance.

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).