Effect of bleaching sequence on paper ageing

作者: Mohamed El-Sakhawy

DOI: 10.1016/J.POLYMDEGRADSTAB.2004.10.002

关键词: Bagasse pulpPulp (paper)MineralogyOne-StepAgeingNuclear chemistrySodium dithioniteHydrogen peroxideBrightnessChemistrySodium hydroxide

摘要: High-yield bagasse pulp was prepared by mechanical treatment after soaking in cold 10% sodium hydroxide. One-, two- and three-stage bleaching of the were investigated using hydrogen peroxide (P) and/or dithionite (D), different sequences. Paper sheets tested for strength properties brightness value. The effect ageing on paper investigated. It found that two steps with one step provides optimum results regard to values. Comparable also obtained ageing. best sequence is PPD followed DPP then PDP.

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