▎ 摘　　要

NOVELTY - Super-wetting surface, preferably a polypropylene surface with a micro-nano structure grafted with hydrophilic side groups, is claimed. The super-wetting surface is at least super-hydrophilic and does not contain initiator residues. USE - The super-wetting surface or article is useful for bonding (e.g. bonding plastic products), spraying (e.g. spraying food outer bag packaging, spraying automobile bumpers), oil-water separation, water treatment, biological, medical or energy field (all claimed). ADVANTAGE - The method is simple, is easy to operate, requires simple equipment, has low costs, and is easy to industrialize; molecular weight of polypropylene does not decrease after grafting, there is no residual monomer or initiator residue, and super-wetting effect of the obtained surface is lasting and stable. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing super-wetting surface; (2) product comprising super-wetting surface, where article is preferably a film, sheet, sheet or molded article; and (3) bonding, spraying, oil-water separation or water treatment methods, comprising using super-wetting surface or article.