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Characteristics of Thermomechanical Pulps Made of Russian Spruce and Larix, and Myanmar Bamboo
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 Title & Authors
Characteristics of Thermomechanical Pulps Made of Russian Spruce and Larix, and Myanmar Bamboo
Lee, Ji-Young; Kim, Chul-Hwan; Nam, Hyegeong; Park, Hyunghun; Kwon, Sol; Park, Dong-Hun;
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Three fiber sources including Russian spruce (Picea jezoensis) and larix (Larix leptolepis), and Myanmar bamboo (Phyllostachys bambusoides) for thermomechanical pulp were explored to replace domestic pine (Pinus densiflora) pulp that has some limitations in an aspect of supply and pitch trouble. Thermomechanical pulps were manufactured under the identical condition, and then compared with their representative pulp properties and pulping process. Both Russian larix and Myanmar bamboo contained large amounts of extractives that would negatively affect mechanical pulping processes. Russian spruce showed the least contents in shives and pitch. Russian spruce and domestic pine reached an optimum freeness level within a short pulp processing time, which consumed less amount of refining energy compared to larix and bamboo. In particular, the spruce wood showed the highest brightness level which might lead to a less consumption of bleaching chemicals. It was expected that Russian spruce could be replaced with the domestic pine wood in respect of both pulping process and pulp quality.
thermomechanical pulp;Pinus densiflora;Russian spruce;shives;pitch;
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