Abstract
AbstractThe asymmetric star polymers are studied by coarse grain simulations. Each polymer chain is represented by number of consecutive soft blobs and additional uncrossability constraints are added to prevent chain crossings. In this work two types of asymmetric star polymers with different backbone lengths are structured. Their dynamical properties are discussed by comparisons with corresponding linear chains, the one covers chain length along with the asymmetric arm through the branch point to one of the symmetric arm, or the backbone chain between two symmetric arm ends, or the largest linear possesses the same molecular weight of the entire star. To reveal the influence of the asymmetric arm length on their relaxation decay times, the autocorrelation function of the vectors from each branching point to corresponding asymmetric arm end are calculated, results are compared with the symmetric star having the same backbone chain.
Highlights
In order to understand the influence of the asymmetric arm on the star size and confirm the equilibrium of arm relaxation, the time dependent autocorrelation functions (ACF) for the unit vectors directed from each branch point to the end-point of the star asymmetric arms are calculated
The dynamical trend of asymmetric stars has been studied by using coarse graining method
Extra simulation times are still needed for those polymers to get better statistics
Summary
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