Flexing with lignin: lignin-based elastomers synthesised from untreated kraft black liquor,Polymer Chemistry

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Flexing with lignin: lignin-based elastomers synthesised from untreated kraft black liquor
Polymer Chemistry ( IF 4.1 ) Pub Date : 2024-06-03 , DOI: 10.1039/d4py00490f
Philip Verdross ₁ , Robert T Woodward ₁ , Alexander Bismarck _{1,

2}

Affiliation

The synthesis and characterisation of a lignin-based elastomer system using lignin-epoxy-resins is presented. Untreated kraft black liquor was used to synthesise glycidyl lignin or black liquor-based epoxy resin (BLER), following a published procedure. A flexible, elastomeric thermoset was produced by cross-linking BLER with succinic anhydride (SA). The produced material was characterised in respect to its chemical, thermal, mechanical and swelling characteristics. In addition, vertical burning tests were performed. The obtained lignin-based elastomeric thermoset had a tensile strength of 1.0 ± 0.20 MPa and elastic moduli of 1.6 ± 1.4 and 0.44 ± 0.35 MPa at 5% and 50% elongation, respectively. A maximum elongation of 151 ± 49% was found.

中文翻译：

用木质素弯曲：由未经处理的牛皮纸黑液合成的木质素基弹性体

介绍了使用木质素环氧树脂的木质素基弹性体系统的合成和表征。未处理的牛皮纸黑液用于按照已公布的程序合成缩水甘油基木质素或黑液基环氧树脂（BLER）。通过 BLER 与琥珀酸酐 (SA) 交联生产出一种柔性弹性体热固性材料。所生产的材料具有化学、热、机械和膨胀特性方面的特征。此外，还进行了垂直燃烧测试。所得木质素基弹性体热固性材料在5%和50%伸长率下的拉伸强度为1.0±0.20MPa，弹性模量分别为1.6±1.4和0.44±0.35MPa。发现最大伸长率为 151 ± 49%。

更新日期：2024-06-03

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