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Valorization of Moroccan brown seaweeds: Elaboration of formaldehyde-free particleboards based on sodium alginate–corn-starch - Mimosa tannin wood adhesives
International Journal of Adhesion and Adhesives ( IF 3.4 ) Pub Date : 2021-05-04 , DOI: 10.1016/j.ijadhadh.2021.102894
Abdelghani Boussetta , El-Houssaine Ablouh , Anass Ait Benhamou , Moha Taourirte , Amine Moubarik

This work attempts to develop an environmentally friendly wood adhesive by formulating cornstarch - mimosa tannin (CSMT) with sodium alginate (SA). During this work, SA was extracted from brown seaweeds Laminaria digitata, the obtained sample was characterized using different analysis techniques such as FT-IR, 1H NMR, specific viscosity and TGA/DTA. This study serves to investigate the effect of different ratios of CMST/SA (w/w) on mechanical and physical performance properties such as modulus of elasticity (MOE), modulus of rupture (MOR), internal bond (IB) and thickness swelling (TS) as well as on the rheological behaviour. The obtained results show that particleboards bonded with the optimal formulation CMST/SA (99.5/0.5; w/w) adhesive represents excellent mechanical and physical properties compared to particleboards glued with the CSMT wood adhesive (control). As a result, the introduction of small proportions of SA in CSMT leads to a significant improvement in mechanical and physical properties as well as an enhancement in water resistance.



中文翻译:

摩洛哥褐藻的增值:基于藻酸钠-玉米淀粉的无甲醛刨花板的精制-含羞草单宁木胶

这项工作试图通过用海藻酸钠(SA)配制玉米淀粉-含羞草单宁(CSMT)来开发环保型木材粘合剂。在此工作中,从褐藻海带中提取了SA ,并使用不同的分析技术(如FT-IR,1)对获得的样品进行了表征。1 H NMR,比粘度和TGA / DTA。这项研究旨在研究不同比例的CMST / SA(w / w)对机械和物理性能的影响,例如弹性模量(MOE),断裂模量(MOR),内部键合(IB)和厚度膨胀( TS)以及流变行为。获得的结果表明,与用CSMT木材胶粘剂(对照)胶合的刨花板相比,用最佳配方CMST / SA(99.5 / 0.5; w / w)胶粘剂粘合的刨花板具有出色的机械和物理性能。结果,在CSMT中引入少量的SA导致机械和物理性能的显着改善以及耐水性的提高。

更新日期:2021-05-15
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