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| Study on the Influence of Different Hydroxy-based Polymer Coatings on the Moisture Absorption/Desorption Properties and Humidity Control Capability of Coated Paper |
| Received:December 19, 2023 |
| DOI：10.11980/j.issn.0254-508X.2024.06.011 |
| Key Words:sodium alginate polyvinyl alcohol CMC moisture adsorption/desorption property moisture control performance |
| Fund Project:国家自然科学基金项目（32001276，32171727）；中轻集团科技创新基金项目（ZQ2022JC-QN01）。 |
| Author Name | Affiliation | Postcode | | LI Yao | School of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457
China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | ZHANG Xue* | School of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457
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 | | ZHAO Tao | 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 | | ZHANG Wenhui | School of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457 | 300457 |
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| Abstract:This study investigated the influence of three different hydroxy-based polymer coatings and coating weights on the moisture absorption/desorption properties and humidity control performance of coated paper. Additionally， an evaluation system was developed to real-time detect humidity changes in a sealed microenvironment， aiming to explore the feasibility of using coated paper for humidity control in such environments under various external humidity conditions. The results showed that the sodium carboxymethyl cellulose （CMC） coated paper exhibited the most favorable moisture absorption/desorption properties and humidity control performance compared to sodium alginate （SA） and polyvinyl alcohol （PVA） coatings. Specifically， when the coating weight was 8.5 g/m2， the CMC coated paper （compared to uncoated base paper） showed a significant increase of 70.2% in moisture absorption capacity and 234.2% in moisture desorption capacity. Under the effect of high humidity or dry environment， after four opening and closing， compared with the uncoated base paper， CMC coated paper （with a coating weight of 34.1 g/m2） could reduced and inoreased the humidity fluctuation vaue of closed microenvironment by 11.5 and 8.6 percentage points， respectively. |
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