Control of branches distribution in linear PE copolymers using fibrillar nanoclay as support of catalyst system

POLYMER

卷:202

Article

Tanasi, Paolo^1,2  Asensio, Maria²  Herrero, Manuel¹  Nunez, Karina^1,2  Canibano, Esteban^1,2  Merino, Juan Carlos^1,2 

[1] Fdn Res & Dev Transport & Energy CIDAUT, Parque Tecnol Boecillo, Valladolid 47051, Spain

[2] Univ Valladolid, Escuela Ingn Ind, Dept Condensed Matter Phys, Paseo Cauce 59, Valladolid 47011, Spain

关键词: Branches;    Polyethylene (PE);    Copolymer;    Nanocomposites;    In situ polymerization;   

DOI  :  10.1016/j.polymer.2020.122707

来源: Elsevier

【 摘 要 】

This study focuses on evaluating the consequences of using of sepiolite as a filler and co-catalyst support in the polymerization of polyethylene copolymers and their nanocomposites. The method used, in situ polymerization, has many variables to study because the type and distribution of the branches have an important effect on the final properties of the material. In an effort to understand the influence of these variables, different polyethylene copolymers (hexene, octene, decene), with its respective nanocomposites, were prepared and characterized. Preliminary results have demonstrated the use of sepiolite allows obtaining nanocomposites with narrower molecular weights and a more homogeneous distribution of the branches than the corresponding neat copolymers.

【 授权许可】

Free