, Volume 25, Issue 1, pp 777–785 | Cite as

Dissolving pulp from bamboo-willow

  • Chao-Jun Wu
  • Jin-Chao Zhang
  • Dong-Mei Yu
  • Rong-Gang Li
Original Paper


The production of dissolving pulp from bamboo-willow (Salix salicaceae or Zhuliu in Chinese) was investigated. It is one of the new fast-growing tree species with strong cold resistance and can grow well in arid areas. Bamboo-willow chips were prehydrolyzed with phosphoric acid and subsequently pulped via the Kraft process. Phosphoric acid was used to dissolve hemicelluloses from bamboo-willow. The resulting brown stock was bleached using oxygen delignification (O), sodium hypochlorite (H), Peroxide (P) and acid (A). Kraft cooking and O–H–P bleaching effectively removed lignin from prehydrolyzed bamboo-willow. The acid post-treatment decreased the ash and ferric ion content in bamboo-willow dissolving pulp. The obtained bamboo-willow dissolving pulp contained low pentosan and high α-cellulose content, and the pulp had high reactivity. The final ash contents, ferric ion, pentosan and α-cellulose content as well as the degree of polymerization and brightness were 0.0950%, 14.7 mg/kg, 2.86%, 95.1%, 547, and 87.2% ISO, respectively. Reactivity is the most significant quality parameter of dissolving pulp and has a large effect on the xanthation reaction during viscose preparation. The reactivity of the obtained bamboo-willow dissolving pulp reached 5.90 s, which implies that the produced dissolving pulp can be used in rayon production.


Bamboo-willow Dissolving pulp Pre-hydrolysis Kraft cooking O–H–P bleaching Acid post-treatment Ferric ion α-Cellulose 



Authors wish to thank the project of Scientific Development Program in Shandong Province (2014GGX108003) and the National Science Foundation of Shandong Province (ZR2017LC016) for providing necessary funds to carry out this research. Authors also wish to thank Dr. Pedram Fatehi for improving the writing.


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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2017

Authors and Affiliations

  • Chao-Jun Wu
    • 1
  • Jin-Chao Zhang
    • 1
  • Dong-Mei Yu
    • 1
  • Rong-Gang Li
    • 1
  1. 1.Key Laboratory of Pulp and Paper Science and Technology of Ministry of EducationQilu University of TechnologyJinanPeople’s Republic of China

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