Polyolefins prepared by metathesis

通过催化剂设计控制聚合物结构的能力一直是聚烯烃成功的主要推动力。因此，主要由乙烯和丙烯制成的聚合物现在可以广泛应用于从超薄垃圾和生产袋到汽车保险杠的各种应用中，它们可以取代特种聚合物在防弹夹克或高模数纤维中的使用。对结构的精确控制是获得高度期望的流变性和力学性能的关键。在这项计划中，我们将制备一种模型聚合物，其中的一个支链将精确地插入到聚乙烯中。这种模型聚烯烃不能用传统的聚合技术来制备。取而代之的是一种特殊的技术。在项目开始时，许多大约10克的模型聚合物将被送往工业合作伙伴Nova Chemals。他们将评估其表现。如果成功，可以设想Nova化学公司和舍布鲁克大学的科学家之间将进行更长时间的合作，通过经济上可行的路线制备如此非凡的产品。

The ability to control polymer architecture via catalyst design has been a major driving force behind the successof polyolefins. Consequently, polymers made principally of ethylene and propylene now can be used in a broadrange of applications, from ultra-thin trash and produce bags, to car bumpers and they can supersede the use ofspecialty polymers in bullet proof jackets or in high modulus fibers. Precise control over architecture is a keyto achieve highly desired rheological and mechanical properties.In this proposal, we will prepare a model polymer in which one branch will be precisely inserted inpolyethylene. Such model polyolefin cannot be prepared by conventional polymerization techniques. Instead, aspecial technique will be used. At the onset of the project, a lot of approximately 10 g of the model polymerwill be sent to the industrial partner, Nova Chemicals. They will evaluate its performance. If successful, itmight be envisaged that a longer collaboration be engaged between Nova Chemicals and the scientists ofUniversité de Sherbrooke to prepare such remarkable products by econonomically viable routes.