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Multifunktionale zellulosebasierte Fasern, Grenzschichten und Verbundwerkstoffe

多功能纤维素基纤维、边界层和复合材料

基本信息

批准号：
193749609
负责人：
Professorin Dr.-Ing. Edith Mäder
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：
2011
资助国家：
德国
起止时间：
2010-12-31 至 2013-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/193749609?language=en
关键词：
Multifunktionale zellulosebasierte Fasern Grenzschichten und

项目摘要

Cellulose based fibres are being widely used as reinforcement for polymer based composites. The main subject of this research proposal is to develop high performance and multifunctional cellulose based fibre reinforced polymer composites by incorporating multi-walled carbon nanotubes (MWNTs) “confined” in the interphase between fibre and matrix. To reach this target, the most challenging task is to tailor the distribution of MWNTs on fibre surfaces. The work mainly comprises three parts: 1) Preparation of MWNT aqueous dispersions with good stability/dispersibility and defined surface charge with the aid of different surfactants and water soluble celluloses. 2) Surface modification of cellulose based fibres with MWNT aqueous dispersions to generate multifunctional cellulose based fibres and in turn, multifunctional cellulose based fibre reinforced polymer composites. 3) Characterization of nanoscale profiles of physical and mechanical properties of interphase using Atomic Force Microscopy (AFM) based elasticity/electricity/thermal mapping techniques (force volume nanoindentation, electric force microscopy, mircro-/nano-thermal analysis), in order to identify the interactions between interphase properties and composite properties.

纤维素基纤维被广泛用作聚合物基复合材料的增强材料。本研究的主要目的是通过将多壁碳纳米管（MWNTs）“限制”在纤维和基体之间的界面，开发高性能和多功能的纤维素基纤维增强聚合物复合材料。为了达到这一目标，最具挑战性的任务是定制MWNTs在纤维表面的分布。本论文的主要工作包括三个部分：1）通过不同的表面活性剂和水溶性纤维素的辅助，制备了具有良好的稳定性/分散性和确定的表面电荷的MWNT水分散体。2)用MWNT水分散体对纤维素基纤维进行表面改性，以产生多功能纤维素基纤维，进而产生多功能纤维素基纤维增强聚合物复合材料。3)使用基于原子力显微镜（AFM）的弹性/电/热映射技术（力体积纳米压痕、电力显微镜、微/纳米热分析）表征界面相的物理和机械性质的纳米级轮廓，以识别界面相性质和复合材料性质之间的相互作用。