The influence of hydrophilic segment chain length of the polyethylene (PEG) on contact angle,water-vapor permeability,water-absorbing capacity and mechanical properties of polyurethane film was investigated.

The synthesis of the polyester-polyol poly-segment copolymers was studied , and a copolymer was synthesized and theoretically evaluated for its co-crystalline and hydrophilic segments and its structural characteristics by the modern analytic means such as IR, GPC and DSC.