壬基酚聚氧乙烯醚丙基磺酸钠的表面活性及应用性能

Application and Surface Properties of Sodium Nonylphenol Polyoxyethylenated Propyl Sulfonate

摘要:

研究了硬水和油田水中壬基酚聚氧乙烯醚丙基磺酸钠（NPSO-5）水溶液的表面活性及应用性能，并与常用表面活性剂LAS、AOS和AES比较；通过添加脂肪醇考察醇对NPSO-5体系泡沫性能的改变情况，最后考察了NPSO-5在NaOH水溶液中的润湿性能和硬水溶液中的润湿乳化性能。结果表明，水硬度从0mmol/L增加到80mmol/L，NPSO-5的临界胶束浓度（CMC）从2.06×10-4mol/L降低到7.8×10-5mol/L；NPSO-5相对于LAS和AOS具有较强的抗硬水能力，且在硬水中具有较高的起泡能力和稳泡性能，添加剂醇在一定程度上改变了液膜吸附层的结构，进一步提高了体系的泡沫性能；在NaOH质量分数达12%时，NPSO-5仍然具有良好的润湿性能。

Abstract:

Surface activity and application performance of aqueous solutions of the nonylphenol polyoxyethylene ether propyl sulfonate (NPSO-5) were studied. The paper discussed the surface tension and the foaming Application and surface properties of sodium nonylphenol polyoxyethylenated propyl sulfonate(NPSO-5) were determined to elucidate the relationship between application/surface properties and hardness of water and oilfield water, then compared with LAS、AOS and AES. The effects of some additives, butyl alcohol and dodecanol on foaming properties were carried out. The wettability and emulsifyiability of NPSO-5 in hard water and the wettability in NaOH(aq) were also studied. The results showed that the foaming properties were better in hard water, and the additives enhanced the foaming properties to some extent by changing the structure of the foam film. Compared with LAS and AOS, NPSO-5 had a strong resistance to hard water. The critical micelle concentration(CMC) decreansed in the hardness of water. NPSO-5 surfactant still has excellent wettability and emulsifyiability in NaOH(aq) and hard water.