Articles having a complex geometric configuration have hydrophilicity imparted to at least a portion of surfaces of the articles while substantially retaining the complex geometric configuration. The hydrophilicity is imparted by an extremely thin, self-interlocking shell of tactic, hydrophilic poly(vinyl...http://www.google.es/patents/US5616246?utm_source=gb-gplus-sharePatente US5616246 - Hydrophilic membranes for electrochemical devices and method for preparing same
Hydrophilic membranes for electrochemical devices and method for preparing same