Mikrofibrillarverstärkte Verbundwerkstoffe aus Polymermischungen - Fibrillisierung, Isotropisierung, Verarbeitung und Eigenschaften

在项目的第一阶段，重点放在：(I)通过控制反应条件来控制基质的化学成分(均聚、嵌段共聚、无规共聚)，(Ii)将各种MFC结构的制造原理从实验室规模转移到足以制造颗粒以用于大块试验样品的注射成型的小批量生产，以及(Iii)材料的各种机械性能的表征作为混合物组成及其微观结构细节的函数。在这项研究中，只使用了缩聚型聚合物。在该项目的第二阶段，它打算扩大迄今积累的关于MFC的经验，即在作为第三种混合成分的相容剂的支持下，从聚烯烃和聚缩合物的混合物中制备MFC。这样的系统将允许应用物理(共结晶)和化学(反应)工具来抑制不相容。适宜的体系为聚丙烯(PP)与尼龙6(PA6)或尼龙66(PA66)共混，并用化学改性的PP(含羧基)作为相容剂。还将研究只含有聚烯烃(例如，来自PP和聚乙烯)的MFC。

During the first period of the projekt the attention was focussed on: (i) control of the chemical composition of the matrix (homopolymeric, block-copolymeric, random copolymeric) by governing the transreaction conditions, (ii) transfer of the manufacturing principle of the various MFC-structures from a lab scale level to a small producion quantity sufficient enough to make granules for injection moulding of bulk test specimens, and (iii) the characterisation of various mechanical properties of the materials as a function of blend composition and their microstructural details. For performance of this study exclusively polymers of condensation type were used. During the second stage of the project it is intended to extend the experience, gathered so far, on MFC's is prepared from blends of polylefines and polycondensates, under support of a compatibilizer as a third blend component. Such systems will allow to apply both physical (co-crystallization) and chemical (transreaction) tools for suppressing the incompatibility. Appropriate systems are blends of polypropylene (PP) with polyamide 6 (PA6) or PA 66 and chemically modified PP (containing carboxyl groups) as compatibilizer. MFC's comprising only polyolefines (e.g. from PP and polyethylene) will be also studied.