Effect of Chemical Pretreatment on Cotton Stalk SCMP Bleaching Properties

Xiang Qiang Wang; Zhi Qiang Pang; Jia Chuan Chen; Gui Hua Yang

doi:10.4028/www.scientific.net/AMR.339.326

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 339Effect of Chemical Pretreatment on Cotton Stalk...

Effect of Chemical Pretreatment on Cotton Stalk SCMP Bleaching Properties

Abstract:

Effect of chlorine, potassium permanganate and peracetic acid pretreatment on H₂O₂ bleaching properties of cotton stalk SCMP was studied in the paper. The results showed that brightness gradually increased with dosage of chlorine, however, the increase is small, and bursting index and breaking length firstly increased and then decreased as dosage of chlorine is great than 1.5%. Brightness of H₂O₂ bleached pulp decreased for potassium permanganate pretreatment, even change the bleaching sequence. Brightness of PaPP bleaching is the highest with peracetic acid pretreatment. Among the studied reagents, chlorine and peracetic acid can increase brightness of H₂O₂ bleaching, however, pretreatment with potassium permanganate can not improve bleaching properties. The brightness with CH₃COOOH pretreatment is higher than that of chlorine pretreatment.

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Periodical:

Advanced Materials Research (Volume 339)

Pages:

326-331

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.339.326

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Online since:

September 2011

Authors:

Xiang Qiang Wang, Zhi Qiang Pang, Jia Chuan Chen, Gui Hua Yang

Keywords:

Brightness, Cotton Stalk SCMP, Delignification, H₂O₂ Beaching, Pre-Treatment

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