Reversibility of polymer-induced fiber flocculation by shear. 1. Experimental methods

摘要

Papermakers desire two seemingly incompatible outcomes. On the one hand, strong agglomeration of fibers and fines can help one to achieve rapid drainage and satisfactory fine- particle retention. One the other hand, papermakers also want uni- form distribution of fibes in the sheet. Procedures have been developed in our lab to evaluate effect of different retention and drainage chemical programs under stressed conditions of salt content, fines content, or high levels of charged colloidal matter. In the work described here the same tests were used to compare The reversibility of agglomerative effects of some common clas- Ses of retention and drainage programs.