The combined action of the special hydrophilic and hydrophobic segments helps to form a certain association network in the emulsion,which has greatly enhanced the thickening effect.

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.

Surface modifiers with different lipophilic chain lengths,such as lauric acid diethanolamine,myristic acid diethanolamine,palmitic acid diethanolamine and stearic acid diethanolamine,were used to prepare four kinds of LaF3 nanoparticles in the mixture solvent of water-ethanol.

In order to eliminate cookery black in restaurants, based on the principles of centrifugation, liquid collision, oleophilic and hydrophilic features, used the experience of existing cookery black purifiers, the high efficient cookery black purifiers have been manufactured, combining centrifugalization and filtering, implementing the first level cookery black treatment.

For the oil-wet solid surface,the contact angle between oil and solid surface under the action of surfactant would reduce to form oil drips,which was further lengthened and broken.