The influence of light on ageing of newsprint paper
The influence of light on ageing of newsprint paper
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DOI：
10.1515/rest.2000.55
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发表时间：
2000-01-01
影响因子：
0.4
通讯作者：
Bukovsky, V
中科院分区：
文献类型：
--
作者：
Bukovsky, V
用改性的阳光照射磨木浆纸（新闻纸）具有相当高的降解效果，其表现为泛黄、酸度增加和机械质量损失。结果表明，这种纸的木质素组分对光最敏感，光诱导的氧化反应在木质素降解中起着至关重要的作用。用MMMC对磨木浆纸进行脱酸显著地抑制了光诱导的氧化反应的过程，但增加了某些过程，这导致更大量的水可提取的降解产物和更低的耐折性。脱酸纸对光辐射非常敏感，这大大限制了它们在展览用途上的用途。磨木浆纸的纤维素成分能抵抗光的降解作用。
Irradiating of groundwood paper (newsprint) by modified sunlight has a considerably high degradation effect which is manifested by yellowing, increased acidity and loss of mechanical qualities. It is shown that the lignin component of such paper is most sensitive to light Light induced oxidation reactions are of crucial importance in the degradation of lignin. Deacidification of groundwood papers with MMMC significantly inhibits the course of light induced oxidation reactions, but increases certain processes which result in a greater amount of water extractable degradation products and in lower folding endurance. Deacidified papers are very sensitive to light radiation, which significantly limits their utility far exhibition purposes. The cellulose component of groundwood paper is resistant to the degradative effect of light.