Interpolymer interaction repulsive

We have performed simulations at polymer concentrations ranging from a dilute system to a melt, for polymers of 20 to 100 beads, to study the impact of interpolymer interactions on the dynamics [51]. The polymer-solvent repulsion was tuned to a theta point condition, rendering the exponent v and the radius of gyration at fixed N virtually independent of the concentration. For the lowest concentrations we found a reasonable agreement with the Zimm theory of the theta state. When the polymer bead... 

Biomacromolecules may be either polycations or polyanions, depending on their functional groups. Among various macromolecules, proteins and polysaccharides are often used simultaneously in the food, pharmaceutical and cosmetic industries knowledge of their interactions is therefore of great importance in controlling the structure and texture of manufactured products. The interactions between proteins and polysaccharides can be either repulsive or attractive. Attractive interactions induce interpolymer complexes, which mostly arise from electrostatic interactions between opposite charges on the polymers. 

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