【摘要】 制备了不同碳链长度的二元环氧化合物 ,并使其与聚合度为 8～ 9的聚氧乙烯 (PEO)或 SPAN80反应 ,合成了含有不同长度间隔链的双亲水基表面活性剂。用傅立叶红外光谱仪和核磁共振仪对其结构进行了表征。实验结果表明 ,具有疏水性间隔链的双亲水基表面活性剂具有良好的表面活性 ,其表面活性不仅比单亲水基表面活性剂的大 ,且可随着疏水间隔链长度的增加而增大。更多还原

【Abstract】 A series of surfactants with double end hydrophilic groups and different chain spacers were synthesized by reacting compounds containing two end epoxy groups and different long carbon chains with poly(ethylene oxide)(PEO, M w=400) or SPAN80. The surfactants were characterized by FTIR and 1H NMR. It was shown that the activity of the surfactant with two end hydrophilic groups and a lipophilic spacer is better than that of which has only one hydrophilic group, and the activity was increased with the length of the lipophilic spacer.更多还原