| 초록 |
Paper packaging may contribute to environmental protection if this green packaging material can replace nonbiodegradable plastic packaging. Nevertheless, porous paper surface and hygroscopic nature of cellulosic fibers hinder the widespread use of paper packaging. In this study, the excellent film-forming performance of polyvinyl alcohol (PVA) was used to seal the surface pores of paper, and alkyl ketene dimer (AKD) was added to improve the water resistance of paper. Results showed that after PVA/AKD coating hydrophilic base paper changed to hydrophobic one. The water vapor transmission rate of paper decreased sharply when adequate PVA/AKD was applied. Meanwhile, the non-grease resistant base paper converted to a product with the highest grease resistance level. Furthermore, both elongation at break and tensile strength of paper improved markedly after PVA/AKD coating. |
