Effect of reactive compatibilizers on the morphology and properties of PET/HDPE/PP tertiary blends for piping industries**

索莱诺公司https://soleno.com/是魁北克省最大的公司之一，生产基于聚合物材料的各种工业应用的水管、运输设备和纺织设备。其产品中使用的主要聚合物材料是聚乙烯（PE）和聚丙烯（PP），这是常见的低成本聚合物（1），具有高抗冻性和防冰盐性，户外天气条件和良好的机械性能，使其非常适合各种特定应用。* 关于其研发活动，该公司有兴趣将常见塑料废物纳入其塑料配方中，以促进该国的环境保护（2）并降低价格。为此，最近建立了一个新的技术中心，拥有各种大规模聚合物加工的技术平台。目前正在开展若干项目，以解决与这些废物的不相容性有关的技术问题。这些项目的重点是回收塑料的净化和基于工业规模的PE废物的新配方的开发，涉及与学术机构和另一家工业公司的合作。* 其中一个项目涉及在管道行业的聚烯烃树脂配方中再利用回收的PET（RPET）。该聚合物由于其机械性能和其柔性加工而广泛用于各种应用领域，例如瓶子（3）、包装、汽车部件（4）和轮胎（5）。我们计划在这里使用从轮胎中回收的PET纤维代替PET瓶，因为它们很容易大量获得，而且它们很便宜，因为它们的使用目前非常有限。然而，RPET纤维与热塑性聚烯烃树脂（PE、PP）不相容，导致机械性能差。它们在化学上不混溶，需要使用增容剂（6-7）。**

Soleno Inc. https://soleno.com/ is one of the largest companies in Québec in the fabrication of water pipelines, transportation equipment and textiles devices based on polymeric materials for various industrial applications. The main polymeric materials used in their products are the polyethylene (PE) and polypropylene (PP), common and low-cost polymers (1), presenting a high resistance to frost and anti-icing salts, outdoor weather conditions and good mechanical properties, which make them perfectly suited to various specific applications. ****Regarding its R&D activities, this company is interested in the incorporation of common plastic wastes in their plastic formulations to contribute to the environmental protection in the country (2) and to reduce the price. A new technological center with various technical platforms for polymeric processing at a large scale has been recently established for this purpose. Several projects are going on to solve the technical problems related to the incompatibility of these wastes. These projects, focused on the decontamination of recycled plastics and the development of new formulations based on PE wastes at the industrial scale, involve collaborations with academic institutions and another industrial company. ****One of the projects involves reusing recycled PET (RPET) in the formulations of polyolefin resins for the piping industry. This polymer is widely used in various application fields such as bottles (3), packaging, automobile parts (4) and tires (5) due to its mechanical properties and its flexible processing. We plan here to use PET fibers recycled from tires instead of PET bottles because they are readily available in large quantities, and they are cheap because their use at present is very limited. However, RPET fibers are incompatible with thermoplastic polyolefin resins (PE, PP) leading to poor mechanical performance. They are thermodynamically immiscible and the use of compatibilizers is needed (6-7). **