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| 引用本文: | 颜小凤,谭佳妮,李祥刚,仝婧婧,谢涛,黄煜琪,孙俊军,饶秋华.改性木薯淀粉胶黏剂的制备及性能研究[J].包装工程,2024,45(1):62-70. |
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| 改性木薯淀粉胶黏剂的制备及性能研究 |
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颜小凤1,谭佳妮1,李祥刚1,2,3,仝婧婧1,谢涛1,黄煜琪2,孙俊军2,饶秋华3
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1.湖南工业大学 包装与材料工程学院，湖南 株洲 412007;2.胜达集团有限公司，杭州 311215;3.中南大学 资源与安全工程学院，长沙 430100
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| 摘要: |
| 目的 探究不同含量的氧化剂、糊化剂以及交联剂对木薯淀粉性能的影响。方法 通过红外、流变学表征方法系统研究了糊化剂(NaOH)和氧化剂(NaClO)用量对淀粉胶黏剂性能的影响。结果 当加入16%(相于干淀粉质量而言)的NaClO作为氧化剂时，淀粉胶黏剂的初黏力和黏度都达到最佳。当加入10%(相对干淀粉质量而言)的NaOH作为糊化剂时，淀粉在室温下就能发生糊化，形成黄色透明状胶黏剂，此时，胶黏剂有明显的触变性。结论 NaClO的加入可以很好地改变淀粉胶黏剂的流动性，但过量的NaClO会使胶黏剂黏度过小，并致耐水性和黏结性不足。适量的NaOH加入可以使淀粉的黏度增加，但过量的NaOH会减弱重新缠结的淀粉高分子链间的作用力，导致黏度下降。硼砂的加入能与淀粉分子形成络合物，使淀粉胶黏剂的黏度有明显提升。 |
| 关键词: 木薯淀粉胶黏剂 交联剂 氧化剂 糊化剂 流变性能 |
| DOI：10.19554/j.cnki.1001-3563.2024.01.008 |
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| 基金项目:国家自然科学基金重大科研仪器研制项目(51927810);湖南工业大学研究生科研创新项目资助(CX2304) |
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| Preparation and Properties of Modified Cassava Starch Adhesive |
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YAN Xiaofeng1, TAN Jiani1, LI Xianggang1,2,3, TONG Jingjing1, XIE Tao1, HUANG Yuqi2, SUN Junjun2, RAO Qiuhua3
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(1. School of Packaging and Materials Engineering, Hunan University of Technology, Hunan Zhuzhou 412007, China;2. Shengda Group Co., Ltd., Hangzhou 311215, China;3. School of Resource and Safety Engineering, Central South University, Changsha 430100, China)
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| Abstract: |
| The work aims to study the effects of different contents of oxidants, gelatinizers and crosslinkers on the properties of cassava starch. The effect of pasting agent (NaOH) and oxidant (NaClO) on starch pasting and their dosage on starch adhesive properties were systematically investigated by infrared and rheological characterization methods. When 16% NaClO (relative to dry starch) was added as an oxidant, the initial adhesion and viscosity of starch adhesive reached the best. When 10% NaOH (relative to dry starch) was added as a gelatinizer, starch could gelatinize at room temperature to form yellow transparent adhesive, and the adhesive had obvious thixotropy. The addition of NaClO can change the fluidity of the starch adhesive well, but excessive NaClO will make the viscosity of the adhesive too low and lead to insufficient water resistance and adhesion. Adding proper amount of NaOH can increase the viscosity of starch. However, excessive NaOH will weaken the force between the re-entangled starch polymer chains, resulting in a decrease in viscosity. The addition of borax can form a complex with starch molecule, so the viscosity of starch adhesive can be improved obviously. |
| Key words: cassava starch adhesive crosslinker oxidant gelatinizer rheological property |
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