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CN106867171A 一种利用聚丙烯酰胺纳米二氧化钛复合材料制备水凝胶的方法 无效 - 驳回

一种利用聚丙烯酰胺纳米二氧化钛复合材料制备水凝胶的方法
摘要：
本发明属于水凝胶领域，具体公开一种利用聚丙烯酰胺纳米二氧化钛复合材料制备水凝胶的方法。配制质量分数为30~40%的丙烯酰胺水溶液；配制浓度为0.3~0.7g/L的N,N‑二甲基双丙烯酰胺稀溶液；配制浓度为0.8~1.2g/L的过硫酸钾稀溶液；称取0.03~0.24g聚丙烯酰胺二氧化钛复合材料，溶解于5~10mL丙烯酰胺水溶液中，滴加0.05~0.1mL N,N‑二甲基双丙烯酰胺稀溶液，滴加0.1~0.2mL过硫酸钾稀溶液，混合均匀；用注射器将混合均匀的溶液注入模具中，室温下紫外照射1~2h；取出模具，将内容物取出，即得水凝胶。本发明利用聚丙烯酰胺纳米二氧化钛复合材料制备水凝胶，提高了水凝胶的拉伸性和强度，让水凝胶不容易断裂。
摘要（英）：

The invention belongs to the field of hydrogel, and more specifically discloses a method used for preparing hydrogel from a polyacrylamide nanometer titanium dioxide composite material. The method comprises following steps: an acrylamide aqueous solution with a mass concentration ranging from 30 to 40% is prepared; a N,N'-dimethyl bisacrylamide dilute solution with a concentration ranging from 0.3 to 0.7g/L is prepared; a potassium persulphate dilute solution with a concentration ranging from 0.8 to 1.2g/L is prepared; 0.03 to 0.24g of the polyacrylamide titanium dioxide composite material is weighed, and is dissolved in 5 to 10ml of the acrylamide aqueous solution, 0.05 to 0.1ml of the N,N'-dimethyl bisacrylamide dilute solution is added dropwise, 0.1 to 0.2ml of the potassium persulphate dilute solution is added dropwise, and an obtained mixture is mixed to be uniform; the mixture is injected into a mould using a syringe, and is subjected to ultraviolet radiation at room temperature for 1 to 2h; and an obtained finished product, which is the hydrogel, is taken out from the mould. The stretchability and the strength of the hydrogel are both high, and fracture of the hydrogel is not easily caused.

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