Properties of Poly (isoprene) - Model Building in the Melt and in Solution

Details Properties of Poly (isoprene) - Model Building in the Melt and in Solution Properties of Poly (isoprene) - Model Building in the Melt and in Solution

2002-11-18

arxiv.org/abs/cond-mat/0211374v1

Physics

Condensed Matter

Soft Condensed Matter

11 pictures 7 figures

Scientific paper

10.1021/ma025877s

Properties of 1,4-\textit{trans} poly (isoprene) at ambient conditions are determined by simulations on two length scales based on two different models: a full-atomistic and a mesoscopic one. The models are linked via a mapping scheme such that one mesoscopic bead represents one chemical repeat unit. Melts as well as solutions of several chain lengths were investigated and mapped individually to the meso-scale. The resulting models are compared to each other. The meso-scale models could be simulated over a large variety of chain lengths and time-scales relevant for experimental comparison. Concerning static properties, we determined the persistence length of our systems and the scaling behavior of the radius of gyration. The latter was compared to experiments and the agreement is satisfactory. Furthermore, we find deviations from Rouse dynamics at all chain lengths at ambient conditions.

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