Determination of polyethylene content in mixed polyethylene/polypropylene composites to modulate their melt flux and impact index properties

聚合物复合材料的回收是一个对环境和公众健康有重大影响的重要工业过程。由回收聚合物组成的基质材料是从**城市固体废物和固定化工业固体废物中回收的。聚合物回收公司是设计和制造回收聚合物的世界领先者，该公司生产尺寸较小的塑料作为成品。这家**公司目前正在寻求改善其回收塑料的质量。特别是，为了**生产具有更高技术质量的回收材料，定量测量其PE/PP复合材料中的聚乙烯(PE)含量对该公司具有重要意义。在这个项目中，我们将首先开发一种定量测定此类**复合材料中PE含量的新方法。然后，我们将研究这些材料的熔体流动指数作为其PE含量的函数。事实上，这些复合材料的PE含量对其熔体流动指数值有很大影响，而熔体流动指数值又是其流变性和物理化学性质的良好指示。最后，将使用扫描电子显微镜、X射线光电子能谱和差示扫描量热法等技术来研究产品的性能。因此，通过开发一种方法来确定原料复合材料的PE含量**，将它们与相应的熔体流动指标值联系起来，并评估产品的**产生的物理化学性能，我们的目标是帮助聚合物回收公司生产具有调制的、高技术质量性能的再生**聚合物产品。

Recycling of polymer composites is an important industrial process that has substantial impact on the**environment and public health. The matrix materials composed of recycled polymers are reclaimed from**municipal solid wastes and immobilizing industrial solid wastes. Polymer Recycle Inc., a world leader in the**design and manufacture of recycled polymers, produces reduced-size plastics as the finished products. The**company is currently searching for improvements in the quality of their recycled plastics. In particular, to**produce recycled materials with higher technical qualities, quantitative measurement of polyethylene (PE)**content in their PE/polypropylene composites is of substantial importance for the company. In this Engage**project, we will first develop a new protocol for the quantitative determination of PE content in such**composites. We will then investigate the melt flow index of these materials as a function of their PE content. In**fact, PE content of these composites has significant impact on their resulting melt flow index values which, in**turn, is a good indication of their rheological and physiochemical properties. Finally, the resulting properties of**the products will be investigated using techniques such as scanning electron microscopy, X-ray photoelectron**spectroscopy, and differential scanning calorimetry. Thus, by developing a method to determine the PE content**of feed stock composites, relating them to their corresponding melt flow index values, and evaluating the**resulting physiochemical properties of the products, we aim to assist Polymer Recycle Inc. to produce recycled**polymeric products with modulated, high technical quality properties.