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Abstract
In this paper, a method for calculating the dielectric constant of copolymers is proposed, which combines the group contribution (GC) methodand improved dipole moment fluctuation (IDMF) method. The IDMF method is used to calculate the dielectric constant of repeating units. The Vogel model and GC method are used to convert the dielectric constant of the repeating unit to that of the copolymer. The Vogel model is a formula describing the relationship between the molar polarizability, which participates in the calculation in the GC method, and dielectric constant. We selected five typical polymers for the validation of this calculation method and found that the calculation values of IDMF-GC is roughly accurate by comparing it with the experimental values. This new method can be used to calculated the dielectric constant of a new copolymer without the help of experiments. It is of great significance for improving the development efficiency of new block copolymers.
Published Version
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