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| Study on Oil Resistance of Different Kinds of Grinding Starch Used in Paper Food Packaging |
| Received:September 14, 2024 |
| DOI：10.11980/j.issn.0254-508X.2025.01.008 |
| Key Words:food packaging grinding starch oil resistance level oil absorption value oil contact angle |
| Author Name | Affiliation | Postcode | | ZHANG Ruijuan | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | SU Yanqun | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | XIA Fei | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | LIU Jingang* | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | XIAO Guihua | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102
School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | SUN Dewen | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | YANG Xiaobo | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper, Beijing, 100102 | 100102 | | HUANG Ju | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102 | 100102 |
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| Abstract:Ultrafine grinding starch dispersion was prepared by mechanical progress and coated on the surface of white cardboard for food packaging. Then the effect of starch type， size of grinding starch and coating amount on oil resistance of white cardboard was studied. The results showed that grinding cationic starch and grinding highly crosslinked starch M were more beneficial to improve the oil resistance of white cardboard. In addition， the smaller the grinding starch particles size and the higher the coating amount， the higher the oil resistance level of white cardboard. Using highly crosslinked starch M as raw material with size of 0.264 μm， and the coating amount of 3.5 g/m2， the air permeability of coated white paperboard was reduced by 98.0%， the oil resistance level reached to 6， the oil absorption value reached to 0.87g/m2， and the oil contact angle reached to 93.2°. When the coating amount increased from 2.23 g/m2 to 6.20 g/m2， the oil resistance level of coated white paperboard increased from 2 to 9， and the air permeability decreased from 0.059 3 to 0.000 081 0 μm·Pa·s， the oil absorption decreased from 2.32 g/m2 to 0.59 g/m2. |
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