Welcome to Chemistry and Industry of Forest Products,

›› 2001, Vol. 21 ›› Issue (2): 21-28.

• 研究报告 • Previous Articles     Next Articles

BRIGHTNESS STABILITY EFFECT ON POPLAR APMP PULPS BY CHEMICAL REDUCTION

FANG Gui-gan1, CASTELLAN Alain2, BERNARD De Jéso2, SHEN Zhao-bang3   

  1. 1. Pulp and Paper Research and Development Centre, CAF, N anjing 210042, China;2. Laboratoire de Chimie des Substances Végétales, Insitut du Pin, Université de Bordeaux I, F-33405 Talence, France;3. Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, China
  • Received:2000-01-28 Revised:1900-01-01 Online:2001-06-30 Published:2001-06-30

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Abstract: Sodium borohydride,sodium bisulfite and their mixture were used to treat the poplar APMP bleached pulps.The treatment conditions for pulps by NaBH4/NaHSO3 mixture were optimised.The results show that poplar APMP pulp treated by sodium borohydride could be brightened and stabilized significantly.Charge of sodium borohydride could be decreased by mixing sodium bisulfite to obtain similar stabilizing effect.Poplar APMP pulps seems to have its specific characteristic of light induced yellowing. IR-FT spectrum suggested that carbonyl and phenolic groups mainly contribute to the light-induced yellowing of poplar APMP.

Key words: poplar APMP, light-induced yellowing, sodium borohydride, sodium bisulfite, brightness stability

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