Monodispersive functionalized lignin fractions and components as precusors for fiber production

作为纤维生产前体的单分散功能化木质素级分和组分

• 批准号: 399003426
• 负责人: Dr. Harald Brünig
• 金额: --
• 依托单位: Leibniz-Institut für Polymerforschung Dresden (IPF)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/399003426?language=en
• 关键词: Monodispersive; functionalized; lignin; fractions; components

The objective of the project are scientific works to the preparation and investigation of lignin-based polymers as a precursor for the carbon fibre production. Besides, modified technical lignins and, on the other hand, model substances which are synthesised from lignin compounds will be examined. Technical lignin often shows a wide molecular mass contribution, as well as low reactivities which can be used for an interlinking in the fibre production, which results in non homogenous fibers. Narrower molecular mass contribution should be received by a fractionation of lignins. New reactive centres should be inserted by means of chemical and enzymatical oxygen modification. Impurities like polysaccharides are another important problem. These should be reduced by an enzymatically treatment with cellulases and hemi cellulases. In parallel model substances from typical lignin compounds will be polymerized.All of these lignins will tested for thermo-plastically preparation of lignin fibers.

该项目的目的是科学著作，以制备和研究基于木质素的聚合物作为碳纤维生产的先驱。此外，将检查经过修改的技术木质素，另一方面，将检查由木质素化合物合成的模型物质。技术木质素通常显示出广泛的分子质量贡献以及低反应性，可用于纤维生产中的相互联系，从而导致非均匀纤维。木质素的分馏应接受较窄的分子质量贡献。应通过化学和酶氧修饰插入新的反应中心。诸如多糖之类的杂质是另一个重要问题。应通过酶促用纤维素酶和半纤维素酶进行酶促处理来减少这些。在典型木质素化合物的并行模型中，将聚合。这些木质素的所有木质素都将测试木质素纤维的热层层状制备。