Synthesis of Carboxymethyl Cellulose-Acrylate-OvPOSS Graft Copolymer and its Application in Paper Protection

As an important part of cultural heritage, paper cultural relics have important historical, scientific and humanistic values. However, a large number of paper cultural relics are suffering from aging, mildew, yellowing, cracks, embrittlement and other threats, or are even completely damaged. To enhance the strength of paper cultural relics and prolong the life of paper cultural relics, a novel CMC-acrylate-OVPOSS graft copolymer was synthesized with carboxymethyl cellulose (CMC), methyl methacrylate (MMA), butyl acrylate (BA), hydroxyethyl methacrylate (HEMA), glycidyl methacrylate (GMA), octavinyl polyhedral oligomeric silsesquioxane (OVPOSS). The synthesized materials were analyzed by infrared spectroscopy, X-ray diffractometer, thermal analyzer and X-ray photoelectron spectroscopy. In addition, the reinforcement solution was coated on the surface of the paper, and the protective effect of the reinforcement solution on the paper was evaluated by testing the mechanical and optical properties of the paper. When the reinforcement solution with a mass concentration of 10 % was coated on the paper, the mechanical properties of the paper were greatly improved, and the gloss and whiteness were basically unchanged.