SOLITONS OF TENSION IN POLYETHYLENE MOLEC ULES

The problem of existence and stability of dynamic soliton regimes in p olyethylene macromolecules was solved by numerical methods. Within the framework of a model taking into account deformation of valence angle s and bonds, soliton solutions are obtained that describe the motion o f local tension domains along a trans-zigzag trajectory. Existence of these tension solitons is determined by geometric, rather than physica l, nonlinearity of the trans-zigzag. It is shown that PE macromolecule has a relatively narrow spectrum of soliton velocities in the the sup ersonic range. Modeling of the soliton dynamics shows evidence of thei r stability in the entire domain of existence of the solution. An inte rval of soliton velocities is found, in which solitons exhibit a parti cle-like behavior, as manifested by their elastic interactions.