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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）。
Author NameAffiliationPostcode
LIU Xiaofei China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
National Engineering Lab for Pulp and Paper， Beijing， 100102 		100102
ZHANG Xue China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
National Engineering Lab for Pulp and Paper， Beijing， 100102
Zhuangli Printing Company， Shantou， Guangdong Province， 515041
South China University of Technology， Guangzhou， Guangdong Province， 510641 		510641
ZHAO Yumeng China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
National Engineering Lab for Pulp and Paper， Beijing， 100102 		100102
CHENG Yun China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
National Engineering Lab for Pulp and Paper， Beijing， 100102 		100102
HU Xiaoli China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
National Engineering Lab for Pulp and Paper， Beijing， 100102 		100102
ZHANG Hongjie* China National Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102
National Engineering Lab for Pulp and Paper， Beijing， 100102 		100102
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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.
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