Microcalorimetric study on interaction between PEO-PPO-PEO triblock copolymers and sodium dodecyl trioxyethylenated sulfonate in aqueous solutions

被引:1
|
作者
Liu, F
Sun, DZ [1 ]
Wang, ZN
Qiu, XM
Li, GZ
机构
[1] Liaocheng Univ, Dept Chem, Liaocheng 252059, Shandong, Peoples R China
[2] Shandong Normal Univ, Coll Chem & Mat Sci, Jinan, Peoples R China
[3] Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China
关键词
sodium dodecyl trioxyethylenated sulfonate; copolymer; anionic surfactant; microcalorimetry; aggregation; enthalpy;
D O I
10.1080/01932690500391403
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Interactions between three triblock copolymers of poly (ethylene oxide)-poly (propylene oxide)-poly (ethylene oxide), EOmPOnEOm, and the ionic surfactant sodium dodecyl trioxyethylenated sulfonate, C12E3S, in aqueous solutions were investigated with titration microcalorimetry at 293.15 K. Values of enthalpies, entropies, and free energies of interaction have been derived. The thermodynamic data indicate that interactions between EO m PO n EO m and C12E3S decrease with the increase of m/n.
引用
收藏
页码:555 / 559
页数:5
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