Synergistic Effects Between Chemical Mechanical Pulps And Chemical Pulps From Hardwoods , 2007 International Mechanical Pulping Conference

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Chemical pulps and chemical mechanical pulps from different hardwoods were compared for their intrinsic and other pulp properties. The comparison was made both separately and in combination of the pulps from these two types of pulping processes. The results showed that hardwood chemical mechanical pulps, like P-RC APMP, can be developed as strong as their chemical pulps, and have higher tensile at the same density, or higher bulk at the same tensile, compared to their chemical pulps. When combining pulps from the two different processes, addition of certain percentage of hardwood chemical mechanical pulps to its chemical pulp improved pulp intrinsic property, and the resultant pulp blends had a higher fiber bonding strength (tensile and tensile energy absorption) than the sum of weighted contributions from its individual components. This synergistic effect between the chemical and the chemical mechanical pulps may be used to improve papermaking processes and their paper and/or paper board products.