|
![本文二维码信息](/download_upload_file.aspx?file_name=/uploadfile/two_dimensional_code_img/zgzzen/2022/5/202205003.png) 二维码(扫一下试试看!) |
Study on Using Chitosan/Polyvinyl Alcohol to Improve the Water Vapor and Oxygen Barrier Properties of Paper-based Materials |
Received:December 07, 2021 |
DOI:10.11980/j.issn.0254-508X.2022.05.003 |
Key Words:chitosan polyvinyl alcohol layering coating blending coating water vapor barrier oxygen barrier |
Fund Project:国家自然科学基金项目(32001276,32171727)。 |
|
Hits: 3002 |
Download times: 1460 |
Abstract:In this paper, the application effect of chitosan and polyvinyl alcohol in improving the barrier properties of paper-based materials for water vapor (polar gas) and oxygen (non-polar gas) was studied. The effects of different mass ratios of chitosan/polyvinyl alcohol and different compounding methods (blending and layering) on the water vapor and oxygen barrier properties, mechanical properties and coating stability of paper-based materials were studied. The results showed that as the mass ratio of chitosan/polyvinyl alcohol decreased, the water vapor barrier properties of paper-based materials gradually increased, while the oxygen barrier properties gradually decreased. Compared with the chitosan/polyvinyl alcohol blending-coated paper, the chitosan/polyvinyl alcohol layering-coated paper had lower water vapor and oxygen transmission ratio. When the mass ratio of chitosan and polyvinyl alcohol was 1∶1, the water vapor and oxygen transmission rate of chitosan/polyvinyl alcohol layering-coated paper were 9.36 g/(m2·d) and 31.93 cm3/(m2·d), respectively. Compared with the pure chitosan-coated paper, the water vapor transmission rate was reduced by about 92%. Compared with the chitosan/polyvinyl alcohol blending-coated paper, the water vapor and oxygen transmission rate were reduced by about 68% and 67%, respectively. |
View Full Text HTML View/Add Comment Download reader |