有机酸对非离子型表面活性剂浊点的影响

有机酸对非离子表面活性剂TritonX-100浊点的影响与酸的亲水性能、空间效应及其在胶束中的增溶位置有关。直链一元酸的加入均使浊点下降,且酸的碳链越长影响越大。直链二元酸对TritonX-100浊点下降的影响小于直链一元酸,且碳原子数nc<6时,使得浊点略有升高;nc≥6时,使得浊点下降。由于空间位阻作用,支链酸和取代酸使TritonX-100浊点降低幅度较小。

The Effect of Organic acids on the Cloud Points of Triton X-100

The effect of organic acids on the cloud points of Triton X-100 was related to the hydrophilicity and space structure of organic acids and solubilization position in the micell.The addition of straight chain monoacids made the cloud point of Triton X-100 system decrease.The longer the chain length of straight chain monoacids is,the stronger the effect on the cloud points is.The effect of the straight chain diacids on the decreasing of the Triton X-100 cloud points is weaker than that of the straight chain monoacid.And it made the cloud points of Triton X-100 system increase if the carbon number of acid nc<6,and decrease if nc≥6.The addition of acids with branch chain and acids substitute made the cloud points of Triton X-100 system decrease within a lesser range,because of their steric hindrance effect.