BioResources (Jun 2014)

Stellera chamaejasme Roots as Raw Material for Pulp Production

  • Haichao Li,
  • Huizhen Sun,
  • Ling Pu,
  • Zhibin He

DOI
https://doi.org/10.15376/biores.9.3.4775-4783
Journal volume & issue
Vol. 9, no. 3
pp. 4775 – 4783

Abstract

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Cellulosic pulps were prepared from Stellera chamaejasme roots using soda, soda-anthraquinone (soda-AQ), and kraft pulping processes. S. chamaejasme is composed of 73.5% holocellulose, 39.7% α-cellulose, and 17.6% lignin, similar to wheat straw and other non-wood plant materials. The ethanol–benzene extractives content of 9.2% is higher than other non-woods. The conditions used for all pulping experiments were as follows: a liquid/solid ratio of 5:1; a time-to-maximum temperature of 100 min; a maximum temperature of 160 °C; and a time-at-maximum temperature of 50 min. The results showed that the pulp yield was 31.27 to 36.83%, the kappa number was 16.32 to 19.42, and the pulps’ intrinsic viscosity was 854 to 976 mL/g. Tear index, tensile index, burst index, and brightness of the papers made from the above unbleached pulps were 12.60 to 13.62 mN•m2/g, 20.57 to 22.56 mN/g, 2.16 to 2.38 kPa•m2/g, and 15.3 to 18.3%, respectively.

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