| Abstract:Polysaccharide is a kind of natural polymer which is abundant in natural sources and environment friendly. In this paper, in order to study the protection effectiveness of Artemisia sphaerocephala gum (ASG), guar gum (GG) and the mixtures to the ancient paper based relics, the tensile strength, folding endurance and gloss of the samples after treatment by different concentration of ASG and GG were tested. Moreover, scanning electron microscope (SEM) was used to observe and analyze the surface morphology of the samples. It was found that ASG (0.4 wt%) and GG (0.2 wt%)exhibited enhancing effect on treatedpaper historic relic. Moreover, results showed that samples treated with GG-ASG mixture(6∶4) not only maintained the original texture, gloss, but also significantly increased the tensile strength and folding endurance. SEM confirmed that the GG-ASG mixture played a protective and connective role in the paper fibers. Tensile strength only decreased by 4.41% and folding endurance decreased by 1.76% after aging. It indicated that ASG, GG and their mixture showed positive effect on the protection of paper historic relic. |
