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Mass Deacidification Treatments of Acidic Bamboo Paper

机译：酸性竹纸的大量脱酸处理

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摘要

Suppression of the deterioration of acidic bamboo paper by the Bookkeeper process (BK) and the dry ammonia ethylene oxide process (DAE) was investigated. These deacidification processes reduce the acidity of both acidic bamboo and hardwood papers to pH 8, which is comparable to acid-free paper. Deacidified bamboo and hardwood papers had higher pHs than untreated papers after accelerated aging for one week at 100 ℃ in a sealed tube. Both deacidification processes preserved the mechanical properties (e.g., folding endurance and zero-span tensile strength) of bamboo papers after one week of sealed tube aging. In contrast, bamboo papers deacidified by BK and DAE processes exhibited a significance loss in tearing strength after one week of tube aging, compared with deacidified hardwood papers. The reduction in the tearing strength of deacidified bamboo papers depended considerably on the reduction in the degree of polymerization during sealed tube aging. Due to the rapid reduction rate of degree of polymerization during sealed tube aging for one week of bamboo papers deacidified by DAE process, such paper exhibited appreciably higher degradation rates than bamboo papers deacidified by the BK process.
机译：研究了通过簿记器法（BK）和干式氨环氧乙烷法（DAE）抑制酸性竹纸的劣化。这些脱酸过程将酸性竹纸和硬木纸的酸度降低到pH 8，这与无酸纸相当。在密封管中于100℃加速老化1周后，脱酸的竹纸和硬木纸的pH值高于未处理的纸。密封管老化一周后，这两种脱酸过程均保留了竹纸的机械性能（例如耐折性和零跨度拉伸强度）。相反，与脱酸的硬木纸相比，经BK和DAE工艺脱酸的竹纸在管老化1周后，其撕裂强度显着降低。脱酸竹纸的撕裂强度的降低很大程度上取决于密封管老化过程中聚合度的降低。由于通过DAE工艺脱酸的竹纸在密封管老化1周的过程中，聚合度的迅速降低，因此与通过BK工艺脱酸的竹纸相比，这种纸的降解率明显更高。

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  • 来源
    《繊維学会誌》 |2012年第6期|p.143-148|共6页
  • 作者

    Khine Rhine Win; Takayuki Okayama;

  • 作者单位

    United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology,3-5-8- Saiwai-cho, Fuchu, Tokyo 183-8509, Japan;

    United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology,3-5-8- Saiwai-cho, Fuchu, Tokyo 183-8509, Japan;

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