Effect of Various Deacidification Solutions on the Stability of Cellulose Pulps

Deacidification of Acidic Books and Paper by Means of Non-aqueous Dispersions of Alkaline Particles: A Review Focusing on Completeness of the Reaction

“…In addition, various aluminum compounds, which are often classified as Lewis acids, can contribute to acidity in the paper by consuming OH -ions. It follows logically that aqueous solutions can be used to neutralize acidic species present in paper (Barrow 1965;Kolar and Novak 1996;Wächter et al 1998;Sundholm and Tahvanainen 2003a,b;. Bredereck et al (1990) compared a number of different alkaline compounds to use for aqueous deacidification; it was concluded that solutions of either Mg(HCO3)2 or a mixture of Mg and Ca bicarbonates is the best choice for treatment of acidic paper.…”

“…Stephens et al (2008a) observed striking differences in molecular mass when comparing naturally aged documents, and they were able to correlate the differences with pH and other indicators of acidity of the papers. Methods of detecting molecular mass, in studies of paper aging, have included viscometry (Kolar and Novak 1996;Selli et al 1998;Ramin et al 2009) and gel permeation chromatography (GPC) (Potthast et al 2008;Kacik et al 2009;Lojewski 2010;Łojewski et al 2011;Ahn et al 2012cAhn et al , 2013Becker et al 2016;Potthast and Ahn 2017). An advantage of GPC is that it provides information about the distribution of molecular masses.…”

The influence of temperature and moisture on the physical properties of cellulose in the presence of metal chlorides and glucuronic acid

“…The studies are mainly performed under neutral to alkaline conditions. The results reported are, however, not unambiguous; some indicate that Mg 2+ ions are less effective at stabilizing against paper discoloration and degradation than Ca 2+ ions are, under both dry and humid ageing conditions (Williams et al 1977;Lienardy, Van Damme 1990;Kolar, Novak 1996;Bansa 1998). Adding alkaline earth metals to cellulose treated at 180°C reduces its viscosity, magnesium ions causing the largest decrease (Strlic et al 2001).…”

The influence of temperature and moisture on the optical properties of cellulose in the presence of metal chlorides and glucuronic acid

“…The results of such studies are not unambiguous; some indicate that Mg 2+ ions are a less effective stabilizer against paper discoloration and degradation than are Ca 2+ ions, under both dry and humid ageing conditions (Williams et al 1977;Lienardy, Van Damme 1990;Bansa 1998). Furthermore, Mg 2+ ions can sometimes even accelerate brightness loss under accelerated ageing conditions (Kolar, Novak 1996).…”