报告题目：Engineering the interface between natural fibers and polymer matrices with application to fiber reinforced polymer composite materials，（天然纤维与聚合物基体间的界面设计及其在纤维增强聚合物复合材料领域的应用）

报 告 人： David Seveno教授

报告时间：8月31日9:30-11:30

报告地点：工程楼604资料室

报告内容简介：

Polymer composites made of natural fibers aim at playing a significant role in the fields of construction, automotive, and aeronautics thanks to their light weight property and reduced content of petro-chemical origins. Natural fibers like flax, hemp, or bamboo fibers show promising results as an alternative to glass fibers as they show descent specific mechanical properties but also good thermal and vibration insulating properties. The interfacial strength between the fibers and the polymer matrix also determines to a large extent the final properties of the materials, i.e. the compatibility between both constituents must be good to guarantee an homogeneous impregnation of the fibers during processing and a final strong adhesion. To predict such compatibility, wetting measurements can be performed but remain difficult to analyze and interpret due the physico-chemical heterogeneities of the fiber surfaces. This talk will present how, in KU Leuven, we circumvent this difficulty by studying natural fibers using a combination of a unique synchronized tensiometer/goniometer and a dynamic wetting apparatus.

亚麻和竹纤维等天然纤维具有优异的机械性能以及隔热减震性能，可作为玻璃纤维的替代产品。天然纤维与基体间的界面性能在相当大程度上决定了最终材料的各项性能，例如：成型过程中各组分间良好的浸润以及其最终界面良好的结合。对纤维润湿性的表征分析可作为预测这种相容性的有效方法，但是由于天然纤维表面的物理化学不均一性，使纤维润湿性的表征变得极为困难。该报告主要介绍了 KU Leuven大学复合材料课题组如何围绕天然纤维润湿性这一课题，利用独特的同步Tensiometer/goniometer方法对纤维动态润湿性进行研究分析。

报告人简介：

David Seveno教授是资深的复合材料科学领域的专家，目前执教于比利时荷语鲁汶大学材料学院，创建了复合材料的物理化学课题组，专注于纤维与聚合物基体间界面等方面的研究工作，主要研究课题包括：纤维的润湿性、复合材料界面物理化学作用机理的数值模拟，结合纳米尺度模拟手段预测碳纳米管、细小纤维或石墨烯增强纳米复合材料的高分子网络形成过程及其最终力学性能等。教授已在Physical Review Letters、Carbon等知名杂志发表高水平学术论文近30篇，主持多项国际科研项目。

生物材料工程学科、高分子材料与工程专业诚挚邀请广大师生光临并参与交流！