高分子材料應用于莫高窟壁畫保護的歷史、現狀與研究=The History,Research Findings,and Current Condition of Polymeric Materials Used in the Conservation of Murals in the Dunhuang Mogao Grottoes
Choosing polymeric materials with appropriate adhesion properties and treatment uses are the key considerations for conserving murals at the Mogao Grottoes. Since 1950, many natural and synthetic materials have been tested: KAZAINA Glue( which may be the same as " Casein Glue"), animal and vegetable glue,Polyvinyl Acetate Emulsion, Polyvinyl Alcohol, Polyvinyl Butyral, Ethylene Cellulose, Polymethyl Methacrylate, Styrene-Acrylic Emulsion, Vinyl Acetate-Acrylic Emulsion, Vinyl Acetate-Dibutyl Maleate Emulsion,Gelatin, and Acrylic and Silicon Modified Acrylic Emulsions. Based on decades of in situ restoration work and practice, this research finds that Polyvinyl Acetate Emulsion, Acrylic and Silicon Modified Acrylic Emulsion and Gelatin are the most suitable materials for these particular cave murals. The murals at Mogao protected with these polymeric materials have remained in good condition for decades in the open air of the natural environmentin which they were painted. Due to differences in chemical structure, composition, and product formula,the authors believe it is necessary to set up a systemic and scientific procedure by which to evaluate and assess mural conservation materials made or procured from different sources, so as to guarantee and improve the effectiveness and quality of mural conservation.
