The long-term performance of the Moroccan conservation treatment is evaluated.
Dry and moist heat artificial aging was used to rank the behavior of restored manuscript papers.
Restored Moroccan manuscript papers dating to the 16th, 17th, 18th, and 19th centuries were artificially weathered.
Degradation of cellulose and fillers was studied.
Variation of cellulose crystallinity under aging is assessed.
Change of elemental composition of papers is monitored.