Processing-Structure-Property Relationaships in Polymer Composites and Nanocomposites

我目前和拟议的研究的主要目标是面向聚合物，复合材料和纳米复合材料的加工形态/结构-性能关系的研究。最终目标是配制新材料并开发新的聚合物加工技术，以实现预期应用的性能和成本的理想平衡。一个例子是我们对吹膜工艺进行的综合分析。 在吹膜生产线上生产的薄膜的价值取决于均匀的性能和薄膜规格。自适应控制策略，以确保均匀的膜厚和良好的膜质量依赖于流体动力学和结构/性能模型，我们已经开发。一旦薄膜的制备得到控制，了解其形貌和性能之间的关系是很有趣的。聚乳酸是一种非常有前途的绿色材料，因此研究的方向是提高聚乳酸的成膜能力和性能。因此，我们的研究的一个目的是通过提高其熔体强度，通过结构改性的薄膜吹塑应用，以改善聚乳酸的加工性能。 这项研究的一个基本利益是创造最好的增值产品。为此，可以将填料和纳米颗粒添加到聚合物中以改善其性能。因此，实验参数，结构和性能之间的相关性将被定义为聚乳酸薄膜充电纳米粘土，以及，热塑性硫化橡胶纳米复合材料，我们将研究的基本参数影响的弹性热塑性硫化橡胶（TPV）纳米复合材料制备的反应挤出。在这项研究中，熔体流动指数的增容剂，聚丙烯接枝马来酸酐（PP-g-MA），对共连续组成范围的影响将进行调查。然后，将评估纳米粘土在热塑性相中的分散水平对交联动力学和交联密度的影响。

The main objective of my current and proposed research is geared towards the study of processing morphology/structure-property relationships in polymers, composites and nanocomposites. The ultimate goal is to formulate new materials and develop new polymer processing technologies in order to achieve a desired balance of performance and cost for the intended applications. An example is the integrated analysis we have performed on the film blowing process. The value of the film produced on a film blowing line depends on uniform properties and film gauge. Adaptive control strategies used to ensure a uniform film thickness and a good film quality rely on hydrodynamic and structure/properties models that we have developed. Once the film fabrication is controlled, it is interesting to know the relationship between its morphology and properties. Since PLA stands as a very promising green material, research was oriented to improving its film blowing abilities and properties. Hence, one aim of our research is to improve PLA processability by enhancing its melt strength through structural modifications for the film blowing application. A fundamental stake of this research is to create the best value added products possible. To do so, fillers and nanoparticles can be added to polymers in order to improve their performances. Thus, the correlation between experimental parameters, structure and properties will be defined for PLA films charged with nanoclays, as well as, for thermoplastic vulcanizate nanocomposites where we will study the fundamental parameters affecting the elasticity of thermoplastic vulcanizate (TPV) nanocomposites prepared by reactive extrusion. In this study, the influence of the melt flow index of the compatibilizer, polypropylene-graft-maleic anhydride (PP-g-MA), on the co-continuous composition range will be investigated. Then, the effects of nanoclays dispersion level in the thermoplastic phase on crosslinking kinetics and crosslinking density will be assessed.