Local and Collective Motions in Precise Polyolefins with Alkyl Branches: A Combination of ~2H and ~(13)C Solid-State NMR Spectroscopy

摘要

Molecular motions are of utmost importance for the macroscopic properties of polymers.In linear polymers, such as polyethylene (PE), branching changes the mobility, and has a pronounced effect on the mechanical properties, such as processablity and drawability, and has therefore been studied in detail. In the systems studied previously, and in particular in commercial PE, the side chains are irregularly distributed along the main chain, which results in complexity and uncertainty of the influence of defects.