Comparative analysis of the efficiency of gas grafting reaction of different types of Hanji with palmitoyl chloride

초록

This study was conducted to investigate the changes in the grafting efficiency of different types of Hanji, such as a raw materials and manufacturing methods varying different palmitoyl chloride concentrations and reaction temperatures. The results showed that the raw material of Hanji affected the grafting efficiency. The grafting efficiency of Hanji produced using the bast fiber of Edgeworthia chrysantha Lindl. was particularly excellent. Meanwhile, the amidation between anionic polyacrylamide (A-PAM) and palmitoyl chloride was speculated to occur in the case of Hanji at which A-PAM was added. However, the manufacturing process of Hanji had little influence on the graft reaction efficiency. The strength and brightness of all Hanji samples decreased via the gas grafting treatment, regardless of the kind of Hanji. The changes in the hydrophobicity, physical and optical properties of Hanji samples via gas grafting increased with the increasing palmitoyl chloride concentration and reaction temperature. © 2019 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

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