Evaluation of Bookkeeper mass deacidification based on historical book papers

Abstract Bookkeeper, the most widely used deacidification process based on MgO particles, was systematically evaluated two sets of nonvaluable historical paper samples. Established analytical methods, such as pH and alkaline reserve determination, were used, well SEM EDS analyses to evaluate distribution Mg-rich particles surface in cross-section paper. The degradation rate constants untreated deacidified samples after accelerated thermal calculated weight average molecular mass determination lifetime extension efficiency factors determined treated showed that prolongation Bookkeeper treatment is highly limited for investigated No correlation found between content or samples, but correlated with before treatment. analysis remained surface, which explains effectiveness Graphical abstract