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| Effect of Starch Surface Sizing on Stiffness of Kraft Paper Board |
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| DOI：10.11981/j.issn.1000-6842.2015.01.27 |
| Key Words:enzymatic starch； surface sizing； penetration； stiffness |
| Fund Project:国家自然科学基金资助项目(31260161)；国家级大学生创业创新训练计划项目(2012CX037)。 |
| Author Name | Affiliation | | XU Meng-die | Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University，Nanjing，Jiangsu Province， 210037 | | ZHU Yu-lian | Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University，Nanjing，Jiangsu Province， 210037 | | QIAN Hui-wen | Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University，Nanjing，Jiangsu Province， 210037 | | PAN Yu-ting | Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University，Nanjing，Jiangsu Province， 210037 | | DAI Hong-qi* | Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University，Nanjing，Jiangsu Province， 210037 |
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| Abstract: |
| Corn starch was modified by α-amylase，and the modified starch was applied to surface sizing of kraft paper board to improve its stiffness． The penetration of starch in paper board was studied． The modified starch with viscosity of 75 mPa·s was applied to surface sizing of kraft paper board．Under the condition of sizing solution concentration 12%，sizing temperature 70℃ and sizing amount 8 g/m2，the ring crush index and stiffness index increased respectively to 11.51 N·m/g and 232.6 N·m3/g． The image analysis of the paper board cross-sections indicated that starch with low viscosity could penetrate into internal paper board by surface sizing at low solids contents．Present study confirmed that starch distributed evenly in z-direction of the paper board by surface sizing using the starch with viscosity 75 mPa·s at 12% solids content． |
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