Abstract
In this study, the effect of adding CMC (Carboxyl methyl Cellulose Sodium) on freeness and WRV (water retention value) of pulps and properties of handsheets was evaluated. In any case, the freeness and WRV of pulps and tensile strength of the handsheets increased with the additive amount of CMC before beating. The increase in tensile strength of the handsheets was dependent on the increase in interfiber bonding strength based on the Page equation. Experimental results showed that the addition of CMC before to reed pulp beating resulted in improvement of paper strength due to enhanced fiber swelling.
