Foam Property of Selected Surfactants.
Foam Property of Selected Surfactants.
复制标题
选定表面活性剂的泡沫特性。
DOI：
10.2965/jswe.15.734
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
M. Wakabayashi
中科院分区：
文献类型：
--
作者：
M. Kikuchi;M. Wakabayashi
直链烷基苯磺酸盐（LAS）和醇衍生的表面活性剂在商业家用洗涤剂应用中是常见的。研究了这类表面活性剂在水中的泡沫性能，并与0.5mg·l-1烷基苯磺酸盐（ABS）的泡沫性能进行了比较。将试管中的表面活性剂溶液通过机械振荡器以每秒约3次振荡5 min，静置并立即记录起泡情况以及30 s、1 min和2 min后的起泡情况。起泡情况取决于表面活性剂的种类和表面活性剂分子的烷基链长度。ABS 0.5 mg·l ~（-1）时的发泡浓度为LAS 0.3-0.4 mg·l ~（-1），烷基聚氧乙烯硫酸盐（AES）和烷基聚氧乙烯醚（AE）0.2-0.4 mg·l ~（-1），α-烯烃磺酸盐（AOS）0.5-1.1 mg·l ~（-1）。与ABS相比，LAS、AES或AE在河水中产生更多泡沫。AOS是较小的铰刀，在河水中很少。在河水中，仅阴离子型表面活性剂产生的泡沫相当于ABS 0.5mg·l-1时的浓度约为0.3mg·l-1，而非离子型表面活性剂则小于0.3mg·l-1。
Linear alkylbenzenesulfonates (LAS) and alcohol derived surfactants are common in commercial household detergent applications. These surfactants are sometimes found in river water, and in few cases foam is observed on river water.The foam properties of these surfactants in water were studied and compared with 0.5 mg·l-1 of alkylbenzenesulfonates (ABS) at which foam was well known to be limited. The surfactant solutions in test tubes were shaken for 5 min by mechanical shaker at about 3 times a second, allowed to stand and foaming recorded immediately and after 30 s, 1 min and 2 min. Foaming depended on a kind of surfactant and alkyl chain length of a surfactant molecule. The concentrations at which foaming is equal to ABS 0.5 mg·l-1 are 0.3-0.4 mg·l-1 for LAS, 0.2-0.4 mg·l-1 for alkylpoly(oxyethylene) sulfates (AES) and alkyl poly(oxyethylene) ethers (AE) and 0.5-1.1 mg·l-1 for α-olefin sulfonates (AOS). LAS, AES, or AE which generate much foam as compared with ABS are dominant in river water. AOS which are less reamers are little in river water. Then in river water the concentration at which foaming is equal to ABS 0.5 mg·l-1 is about 0.3 mg·l-1 for anionic surfactants only, and with nonionic surfactants it is less than 0.3 mg·l-1 as anionic surfactants.