Analysis of Ethylene Copolymers with Long-Chain α-Olefins (1-Dodecene, 1-Tetradecene, 1-Hexadecene): A Transition between Main Chain Crystallization and Side Chain Crystallization.

ABSTRACT: A series of ethylene copolymers with long-chain α-olefins [LCAOs, 1-dodecene (DD), 1-tetradecene (TD), 1-hexadecene (HD)] and various LCAO contents were prepared, and their thermal properties, including effects of LCAO content and side chain length, were explored. The Cp*TiCl₂(O-2,6- ⁱ Pr₂-4-SiEt₃-C₆H₂)-MAO catalyst system afforded rather high-molecular-weight copolymers with unimodal molecular weight distributions and uniform compositions (confirmed by DSC thermograms). In addition to the melting temperatures (T _m values) corresponding to the so-called main chain crystallization (samples with low LCAO contents, the T _m value decreased upon increasing the LCAO content) and the side

SUBMITTER: Kitphaitun S 

PROVIDER: S-EPMC8892485 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature