A novel series of quaternary ammonium gemini compounds having a butynylene spacer and different hydrocarbon chain lengths (CGBu8-16) were prepared. Carbonate group inserted between the hydrocarbon chains and the polar heads make these compounds hydrolyzable. The degradation under hydrolysis of these novel series will lead to the generation of fatty alcohols and readily degradable compounds. The reagents used are biodegradable, renewable, or reusable. The surface activities and foamability in aqueous solution of the cleavable gemini compounds containing n-octyl, n-decyl, and n-dodecyl chains meet the criteria for being good surfactants and showed stable foams even at low concentrations.

中文翻译：

---

新型可裂解双子表面活性剂的合成及表面活性特性

制备了一系列具有丁炔基间隔基和不同烃链长度的新型季铵双子化合物 ( CGBu8-16 )。插入烃链和极性头之间的碳酸酯基团使这些化合物可水解。这些新系列在水解下的降解将导致脂肪醇和易于降解的化合物的产生。使用的试剂是可生物降解的、可再生的或可重复使用的。含有正辛基、正癸基和正十二烷基链的可裂解双子化合物在水溶液中的表面活性和起泡性符合作为良好表面活性剂的标准，即使在低浓度下也显示出稳定的泡沫。