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Effect of Fiber Properties on Water Vapor Barrier Performance of Paper
Received:May 05, 2023  
DOI：10.11980/j.issn.0254-508X.2024.01.005
Key Words:fiber morphology  wettability  water vapor barrier performance  three-dimensional pore structure
Fund Project:国家自然科学基金（32001276，32171727）；中轻集团科技创新重点专项（ZQ2022JC-QN01）。
Author NameAffiliationPostcode
HU Xiaoli* 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
State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640
Zhuangli Printing Company， Shantou， Guangdong Province， 515041
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
HOU Leilei 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
TIAN Chao 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 study， paper with different physicochemical properties were prepared by using different types of pulp fibers with different degrees of pulping treatment and silane modification to regulate the three-dimensional structure of paper. From the viewpoint of the effects of fiber physical properties and chemical hydrophobic modifications on paper structure， the effects of fiber properties （beating degree， fiber length and distribution， water retention value， fiber morphology and hydrophilic/hydrophobic property） on the water vapor barrier performance of paper were investigated. The results showed that the water vapor barrier performance of the paper was influenced by the beating degree and hydrophilic/hydrophobic of the fibers. Under the testing conditions of （23±0.5）℃ and （50±1）%RH， the water vapor transmission rate of the paper with a basis weight of 60 g/m2 was reduced from 954.5 to 93.77 g/（m2·d）， when the beating degree of the unbleached pine pulp was increased from 13.5 to 90 °SR. The water vapor transmission rate of the paper prepared by hydrophobic modified fiber was reduced by 11.6% compared with that of unmodified fiber when the test conditions were （23±0.5） ℃ and （75±1）%RH. The water vapor transmission rate of paper was influenced by the mixing proportion of hydrophobic modified fiber.
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