环保型改性玉米淀粉粘合剂的研究

目的制备一种无毒环保型改性玉米淀粉粘合剂。方法以淀粉、聚乙烯醇为主要原料,高锰酸钾为氧化剂,硼酸为交联剂,水为溶剂,研究改性玉米淀粉粘合剂的合成条件。通过单因素变量法对影响产品性能的原料量、氧化剂用量、糊化剂用量、p H值、交联剂用量等因素进行考察。结果优化的合成工艺参数为水360 g,玉米淀粉30 g,高锰酸钾0.0045 g,聚乙烯醇100 g,硼酸0.054 g,Na OH 2.4 g,氯化钙、尿素、乙醇、消泡剂适量,在此条件下合成的产品为半透明粘稠状液体,黏度为70 Pa·s。结论产品综合性能较好,适合在啤酒工业中的贴标机生产线上应用。

Environment Friendly Adhesive Composed of Modified Corn Starch

The aim of the study was to prepare a safe and environment friendly adhesive composed of modified corn starch. Using polyvinyl alcohol and corn starch as raw materials, potassium permanganate as oxidant, boric acid as cross-linking agent, and water as solvent, the synthesis conditions of modified corn starch adhesive were studied. Using single factor variable method, the effects of factors such as dosage of materials, oxidant dosage, dosage of dextrinizing agent, pH and dosage of cross-linking agent on the product properties were investigated. The optimal technological parameters were found be as follows: 360 g Water, 30 g corn starch, 0.0045 g potassium permanganate, 100 g polyvinyl alcohol, 0.054 g boric acid, 2.4 g sodium hydroxide, and some calcium chloride, urea, alcohol, and defoamer. The product synthesized under this condition was a semi-transparent sticky liquid with a viscosity of 70 Pa·s. In conclusion, the overall performance of the product was high. The product was appropriate for applying to the production line of beer industry.