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A Novel Ziegler–Natta-Type Catalytic System—TiCl(4)/2,2′-Dimethoxy-1,1′-Binaphthalene/Et(3)Al(2)Cl(3)/Bu(2)Mg for Production of Ultrahigh Molecular Weight Polyethylene Nascent Reactor Powders, Suitable for Solvent-Free Processing

A series of ultrahigh molecular weight polyethylenes with viscosity-average molecular weights in the range of 1.6–5.6 × 10(6) have been prepared by using a novel Ziegler–Natta-type catalytic system—TiCl(4)/2,2′-dimethoxy-1,1′-binaphthalene/Et(3)Al(2)Cl(3)/Bu(2)Mg at different temperatures (T(poly))...

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Detalles Bibliográficos
Autores principales: Serenko, Olga A., Buzin, Mikhail I., Tuskaev, Vladislav A., Gagieva, Svetlana C., Kolosov, Nikolay A., Kurmaev, Dmitrii A., Savel’eva, Tatyana F., Golubev, Evgenii K., Zubkevich, Sergey V., Vasil’ev, Viktor G., Nikiforova, Galina G., Korlyukov, Alexander A., Bulychev, Boris M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6401888/
https://www.ncbi.nlm.nih.gov/pubmed/30961206
http://dx.doi.org/10.3390/polym10111281
Descripción
Sumario:A series of ultrahigh molecular weight polyethylenes with viscosity-average molecular weights in the range of 1.6–5.6 × 10(6) have been prepared by using a novel Ziegler–Natta-type catalytic system—TiCl(4)/2,2′-dimethoxy-1,1′-binaphthalene/Et(3)Al(2)Cl(3)/Bu(2)Mg at different temperatures (T(poly)) in the range between 10 and 70 °C in toluene. The morphology of the nascent reactor powders has been studied by scanning electron microscopy, wide-angle X-ray diffraction, and the DSC melting behavior. Polymers are suitable for the modern processing methods—the solvent-free solid-state formation of super high-strength (tensile strength over 1.8–2.5 GPa) and high-modulus (elastic modulus up to 136 GPa) oriented film tapes. With decrease of T(poly), the drawability of the reactor powders increased significantly.