Process for the production of graft-copolymers by irradiation with high energy ions, and products obtained thereby.

摘要

The process comprises the following stages: a) immersion of the polymer in a solution of monomer for a number of hours or bringing the polymer into contact in a cell with the monomer which may be in liquid or gaseous form, b) irradiation of the whole using a beam of energetic ions of at least 1 MeV/u.m.a. at a fluence of between 10<8> and 10<1><4> ions/cm<2> at a temperature which is kept constant during the irradiation period, c) separation of the unreacted monomer using a solvent. The products obtained are membranes which can be applied in permeation, filtration and osmosis.