碳酸钙对酸处理纸张稳定性的影响。
The Effect of Calcium Carbonate on the Stability of Acid Treated Papers.
作者信息
Graminski E L, Parks E J
机构信息
National Bureau of Standards, Washington, DC 20234.
出版信息
J Res Natl Bur Stand (1977). 1981 May-Jun;86(3):309-315. doi: 10.6028/jres.086.012.
Exposure of kraft wood pulps to an acidic medium results in a destabilization of wood pulp. The degree of destabilization appears to depend on the concentration of acid the pulp is exposed to. The addition of calcium carbonate to acid destabilized pulp does not restore the pulp to its original stability. The absorption of alkali metals is pH dependent which could explain the destabilization of wood pulps when exposed to an acid medium. A number of questions arise about the merit of stabilizing degraded paper documents by deacidification with alkaline earth salts and the usefulness of an alkaline reserve in paper.
硫酸盐木浆暴露于酸性介质会导致木浆不稳定。不稳定程度似乎取决于木浆所接触的酸的浓度。向酸致不稳定的木浆中添加碳酸钙并不能使木浆恢复到原来的稳定性。碱金属的吸收取决于pH值，这可以解释木浆在暴露于酸性介质时的不稳定现象。关于用碱土金属盐脱酸来稳定降解纸质文件的优点以及纸张中碱储备的作用，出现了许多问题。
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