用十二烷基硫酸钠提高淀粉基木材胶粘剂的性能。
Improving the performance of starch-based wood adhesive by using sodium dodecyl sulfate.
机构信息
State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, 214122 Wuxi, People's Republic of China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, 214122 Wuxi, People's Republic of China.
出版信息
Carbohydr Polym. 2014 Jan;99:579-83. doi: 10.1016/j.carbpol.2013.08.062. Epub 2013 Aug 31.
Sodium dodecyl sulfate (SDS) was used to improve the performance of starch-based wood adhesive. The effects of SDS on shear strength, viscosity and storage stability were investigated. It was shown that, although the addition of 1.5-2% (dry starch basis) SDS resulted in a slight decrease in shear strength, the mobility and storage stability of adhesive were significantly enhanced. Possible mechanisms regarding specific action of SDS were discussed. It was proved, using blue value or differential scanning calorimetry (DSC) analysis, that the amylose-SDS complexes were formed in the adhesive. The complex formation or simple adsorption of SDS with starch molecules might hinder the aggregation of latex particles, as shown by scanning electron microscopy images, and inhibit starch retrogradation, as observed by DSC analysis. As a result, in the presence of SDS, the adhesive had higher mobility and storage stability, indicating that SDS could be used to prepare starch-based wood adhesives with high performance.
十二烷基硫酸钠（SDS）被用于提高淀粉基木材胶粘剂的性能。考察了 SDS 对剪切强度、黏度和储存稳定性的影响。结果表明，尽管添加 1.5%-2%（干淀粉基础）的 SDS 会导致剪切强度略有下降，但胶粘剂的流动性和储存稳定性得到显著增强。讨论了 SDS 特定作用的可能机制。通过蓝值或差示扫描量热法（DSC）分析证明，在胶粘剂中形成了直链淀粉-SDS 复合物。SDS 与淀粉分子的复合形成或简单吸附可能会阻碍胶乳粒子的聚集，正如扫描电子显微镜图像所显示的那样，并且抑制淀粉回生，正如 DSC 分析所观察到的那样。结果，在 SDS 的存在下，胶粘剂具有更高的流动性和储存稳定性，表明 SDS 可用于制备具有高性能的淀粉基木材胶粘剂。
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