| 摘要: |
| 目的 以酶改性玉米淀粉为施胶剂，对箱纸板和瓦楞纸板进行表面施胶，研究其对纸板物理性能的影响。方法 使用中温淀粉酶改性玉米淀粉，测试其粘度变化;然后将酶改性淀粉施胶于箱纸板和瓦楞纸板表面，测试箱纸板的挺度、环压强度、耐破度、耐折度、抗张强度以及瓦楞纸板的边压强度和耐破度，探索酶改性玉米淀粉对箱纸板和瓦楞纸板表面施胶的最佳用量。结果 使用2.5 μL淀粉酶改性质量分数为10%的玉米淀粉后，将其施胶于箱纸板表面，此时箱纸板的物理性能最优。与空白样相比，箱纸板的横向挺度提高了380%，纵向挺度提高了464%，环压强度提高了53.2%，纵向抗张强度提高了10.6%，横向抗张强度提高了9.6%，箱纸板的耐破度变化不大，耐折度降低;经2 μL淀粉酶改性质量分数为10%的玉米淀粉后，将其施胶于瓦楞纸板表面，其边压强度提升最多;与空白样相比，边压强度提高了45.5%。结论 酶改性玉米淀粉的制作工艺简单，为制备高性能纸板提供了参考依据。 |
| 关键词: 淀粉酶 玉米淀粉 箱纸板 瓦楞纸板 表面施胶 纸板性能 |
| DOI：10.19554/j.cnki.1001-3563.2021.01.012 |
| 分类号: |
| 基金项目:天津职业大学横向科研项目(20200135，60002-604066);2020年天津市企业科技特派员项目(20YDTPJC00600) |
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| Application of Medium-temperature Amylase Modified Corn Starch in Paperboard |
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YIN Xing1, LIANG Feng-qing1, CHEN Zhi-qiang2, HAO Xiao-xiu1
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(1.School of Packaging and Printing Engineering, Tianjin Vocational Institute, Tianjin 300410, China;2.China Packaging Research & Test Center, Tianjin 300457, China)
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| Abstract: |
| The work aims to coat the box paperboard and corrugated paperboard with enzyme modified corn starch as the glue and study the effect of enzyme modified corn starch on the physical properties of paperboard. The medium-temperature amylase modified corn starch was used and its viscosity change was tested. Then, the enzyme modified corn starch was coated on the box paperboard and corrugated paperboard. Next, the bending resistance, ring compression strength, bursting resistance, folding endurance, tensile strength of the box paperboard were determined and the edgewise crush resistance and burst resistance of the corrugated paperboard were tested. After the corn starch with mass fraction of 10% was modified with 2.5 μL amylase and coated on the box paperboard, the physical properties of box paperboard were the best. Compared with the blank sample, the horizontal bending resistance increased by 380%, the vertical bending resistance increased by 464%, the ring compression strength increased by 53.2%, the vertical tensile strength increased by 10.6% and the horizontal tensile strength increased by 9.6%. The bursting resistance of the box paperboard did not change significantly, and the folding endurance decreased. After the corn starch with mass fraction of 10% was modified with 2 μL amylase and coated on the corrugated paperboard, the paperboard had the highest edgewise crush resistance. Compared with the blank sample, the edgewise crush resistance increased by 45.5%. The production process of enzyme modified corn starch is simple, and provides a reference for the preparation of high-performance paperboard. |
| Key words: amylase corn starch box paperboard corrugated paperboard surface sizing paperboard properties |
