油酸二聚甘油酯的合成及其柔软保湿纸的测试

Synthesis of dipolyglycerol oleate and its moisturizing performance on paper towel

摘要:

以油酸缩水甘油酯和甘油为原料，在固体酸催化剂（活性炭负载硫酸）作用下，通过开环反应制得油酸二聚甘油酯。通过FTIR和1HNMR对产物结构进行表征，并将其用作柔软保湿剂涂覆到面巾纸上对纸张的柔软度、保湿性、抗张强度等性能进行测试。结果表明：油酸二聚甘油酯具有优异的柔软保湿性能，在油酸二聚甘油酯添加量为甘油水溶液质量的0.25%时，面巾纸的柔软度（49 mN）优于市面上有机硅柔软剂改性的面巾纸柔软度（68 mN），这是由于大分子柔软剂能够对纤维表面的缺陷进行修复，从而使纤维表面平整度的提升。且在温度为30 ℃，湿度为60%时，油酸二聚甘油酯型柔软保湿剂涂覆后的面巾纸的保水率（98.2%）也略高于有机硅柔软剂涂覆后的面巾纸的保水率（96.5%）。

Abstract:

Using glycidyl oleate and glycerol as raw materials, under the action of solid acid catalyst（sulfuric acid supported on activated carbon）, dipolyglycerol oleate is prepared by ring-opening reaction. The structure of the product was analyzed and characterized by FTIR and 1HNMR, and it was used as a softening and moisturizing agent to be coated on facial tissue to study the paper's properties such as softness, moisture retention, and tensile strength. The results show that dipolyglycerol oleate has excellent softening and moisturizing properties. When the amount of dipolyglycerol oleate is 0.25% of the mass of glycerin aqueous solution, the softness (49 mN) of facial tissue is better than that of silicone softeners on the market. The softness of the modified facial tissue (68 mN) is due to the fact that the macromolecular softener can repair the defects on the fiber surface, thereby improving the flatness of the fiber surface. And when the temperature is 30 ℃ and the humidity is 60%, the water retention rate (98.2%) of the facial tissue coated with dipolyglycerol oleate softener is also slightly higher than that of the facial tissue coated with silicone softener (96.5%).