State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, 214122 Wuxi, Jiangsu, People's Republic of China.
Carbohydr Polym. 2013 Jun 5;95(1):397-403. doi: 10.1016/j.carbpol.2013.02.009. Epub 2013 Feb 18.
Urea was used to improve the freeze-thaw (F/T) stability of a renewable starch-based wood adhesive (SWA). The improved stability was supported by the enhanced viscosity stability and bonding performance stability after repeated F/T cycling. The results of dynamic time sweep experiments, differential scanning calorimetry (DSC) and pulsed nuclear magnetic resonance (PNMR) showed that the improved stability can be due to the ability of urea to inhibit the retrogradation of starch molecules in the starch-based wood adhesive system. Urea can be used as an effective additive for improving storage properties of starch-based wood adhesive in low temperature environment. Approximately 15% (w/w) urea was the determined optimal dosage.
尿素被用于提高可再生淀粉基木材胶粘剂（SWA）的耐冻融（F/T）稳定性。经过多次 F/T 循环后，增强的粘度稳定性和胶合性能稳定性支持了这种改进的稳定性。动态时间扫描实验、差示扫描量热法（DSC）和脉冲核磁共振（PNMR）的结果表明，尿素的稳定性提高可归因于其抑制淀粉基木材胶粘剂体系中淀粉分子回生的能力。尿素可用作改善淀粉基木材胶粘剂在低温环境下储存性能的有效添加剂。约 15%（w/w）的尿素是确定的最佳用量。
