Having been bleached with 1. 5% H2O2 in alkaline medium, pulps whiten to a whiteness of 82% SBD, and pulp sheets maintain a higher strength properties, the breaking length of 6. 1 km. The total yield loss during OP bleaching is slightly less ten percent.

• 再经1.；5%25H2O2漂白，浆白度达82%25SBD，裂断长为6