| Summary: | 碩士 === 國立臺南藝術大學 === 古物維護研究所 === 96 === The restoration of Chinese painting has been a category of mounting techniques in tradition. Numerous working procedures and the applications of materials are the precious experiences handed down by forerunners since thousands of years ago. However, new concepts of relics conservation have been added to contemporary restoration of Chinese painting. One of the new courses for current restoration of Chinese painting is sifting the wheat from the chaff of these traditional techniques and reviewing these techniques with scientific views and quantitative methods. Traditionally gelatin-alum solution and soy bean solution are commonly used sizing agents. The application of gelatin-alum solution has been a contentious issue because of the use of alum. With regard to the application of soy bean solution, there has been no related research so far. In addition to the two sizing agents, some contemporary painters also try to adopt the neutral sizing agent used in papermaking, Alkyl Ketene Dimer (AKD), as the substitute for gelatin-alum. However, it has not been used for conservation or restoration.
Considering the demands of inpainting in restoration of Chinese painting and contemporary conservation concepts, this thesis has done a literature review and implemented experiments with three sizing agents: gelatin-alum solution, soy bean solution and AKD. The experiments can be divided into two parts. The first part will quantitate the data of application including the influence of sizing agent concentration, the quantity of sizing agents, and other factors. Secondly, there is a comprehensive comparison of the properties of the three sizing agents including colorant holdout test, insole stiffness test, and aging test. In terms of the quantitative data of application, the respective concentration required by inpainting to achieve the sizing degree is: applying Gelatin-alum solution on Shiuan paper twice with 3% of gelatin and 0.3% of alum; applying 1% of soy bean solution once; applying 0.3% of AKD once and then air drying for 24 hours. In the comparison of the properties of the three sizing agents, the results show that the colorant holdout of AKD is the weakest. In terms of the insole stiffness, soy bean solution is more suitable for the restoration of Chinese painting than the others. With regard to the aging test, the variance of pH value and folding endurance of gelatin-alum sized paper is greater than the other sized papers. In addition, while the variance of colorimetric of AKD is the slightest in the 30 days after aging test, the variance is dramatic in the first 10 days.
The tests of the three sizing agents above demonstrate that the mechanism of acid hydrolysis in gelatin-alum sized paper should be noted. Moreover, further research is needed on whether AKD can be used for the sizing before the inpainting of the restoration of Chinese painting and how to improve the colorant holdout of AKD sized paper.
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