Nanocellulose functionalized with ethylenediamine as a modifier of urea-formaldehyde adhesive in particleboard production

IF 2.5 3区农林科学 Q1 FORESTRY

European Journal of Wood and Wood Products Pub Date : 2025-02-04 DOI:10.1007/s00107-025-02213-3

Jakub Kawalerczyk, Dorota Dziurka, Dorota Dukarska, Radosław Mirski

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引用次数: 0

Abstract

The aim of the conducted research was to investigate the effect of introducing a nanocellulose (NC) functionalized with an ethylenediamine (EDA) to urea-formaldehyde (UF) adhesive on the properties of particleboard. The effectiveness of performed functionalization was confirmed using a Fourier transform infrared spectroscopy (FTIR) and amino groups quantification. Based on the outcomes of a thermogravimetric analysis and the measurements of a contact angle, it was found that the EDA-modified nanocellulose was characterized by improved thermal stability and reduced hydrophilicity. Moreover, the results of differential scanning calorimetry showed that the modification of the UF adhesive increased the enthalpy of the curing reaction, which indicates an increase in the UF adhesive reactivity. The effect was particularly distinct when the EDA-modified NC was applied. Modification of the UF adhesive also had a positive effect on the physical and mechanical properties of the produced single-layer particleboards. The applied functionalization with EDA allowed to increase the potential of NC in improving the internal bond, reducing thickness swelling and formaldehyde content of the manufactured boards. Overall, the use of 1% EDA-modified NC was selected as the optimal variant enabling the production of particleboards characterized by enhanced strength, improved water resistance and decreased formaldehyde content.

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以乙二胺为改性剂的纳米纤维素在刨花板生产中的应用

本研究旨在探讨以乙二胺（EDA）为功能化剂的纳米纤维素（NC）对刨花板性能的影响。利用傅里叶红外光谱（FTIR）和氨基定量分析证实了功能化的有效性。热重分析和接触角测量结果表明，eda改性纳米纤维素的热稳定性得到改善，亲水性降低。差示扫描量热分析结果表明，改性脲醛胶提高了固化反应焓，表明脲醛胶的反应活性有所提高。当应用eda修饰的NC时，效果尤其明显。改性脲醛胶粘剂对生产的单层刨花板的物理力学性能也有积极的影响。应用EDA功能化可以增加NC在改善内部粘合，减少厚度膨胀和制造板的甲醛含量方面的潜力。总体而言，选择使用1%的eda改性NC作为最佳变体，使生产的刨花板具有增强强度，改善耐水性和降低甲醛含量的特点。

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来源期刊

European Journal of Wood and Wood Products 工程技术-材料科学：纸与木材

CiteScore

5.40

自引率

3.80%

发文量

124

审稿时长

6.0 months

期刊介绍： European Journal of Wood and Wood Products reports on original research and new developments in the field of wood and wood products and their biological, chemical, physical as well as mechanical and technological properties, processes and uses. Subjects range from roundwood to wood based products, composite materials and structural applications, with related jointing techniques. Moreover, it deals with wood as a chemical raw material, source of energy as well as with inter-disciplinary aspects of environmental assessment and international markets. European Journal of Wood and Wood Products aims at promoting international scientific communication and transfer of new technologies from research into practice.