By coating the blend of poly (vinyl alcohol) and chitosan on the inner surface of poly (acrylonitrile) hollow fiber ultrafiltration membrane, the composite membrane for pervaporation was obtained.

The most successful method for controlling the adsorption of proteins onto the capillary inner surface in ce is the modification of the capillary surface with coating.

The inner surface of small caliber cylinder packing of ships are applied with strengthening treatment by means of laser coating and surface modification techniques to improve their performances.