Open AccessПОВЕРХНОСТНОЕ НАТЯЖЕНИЕ СМЕСЕЙ ПОЛИАКРИЛАМИДА С НЕИОННЫМИ ПОВЕРХНОСТНО-АКТИВНЫМИ ВЕЩЕСТВАМИ (SURFACE TENSION OF MIXTURES OF POLYACRYLAMIDE WITH NON-IONIC SURFACE-ACTIVE SUBSTANCES)
Author(s) -
Ж. Б. Оспанова,
Н. Әбеу,
Б. Тасенова
Publication year - 2020
Publication title -
h. dosmuhamedov atyndaġy atyrau memlekettìk universitetìnìn̦ habaršysy/h. dosmuhamedov atyndaġy atyrau universitetìnìn̦ habaršysy
Language(s) - English
Resource type - Journals
eISSN - 2790-332X
pISSN - 2077-0197
DOI - 10.47649/vau.2020.v58.i3.21
Subject(s) - pulmonary surfactant , surface tension , polyacrylamide , critical micelle concentration , polymer , aqueous solution , chemical engineering , chemistry , gibbs isotherm , foaming agent , micelle , chromatography , materials science , polymer chemistry , organic chemistry , thermodynamics , physics , porosity , engineering
The aim of this work is to study the surface properties of mixtures of polyacrylamide (PAA) with nonionic surfactants. In this work, kinetic curves of a decrease in the surface tension of PAA were obtained in the concentration range of 1 * 10-5 ÷ 1 * 10-3 base mol/l, and on the basis of the equilibrium values of surface tension, isotherms of the surface tension of aqueous solutions of composite mixtures based on polyacrylamide (PAA) were obtained with surfactants - nonionic amphoteric N, N – dimethyldodecylamine N-oxide (DMDAO) and nonionic cocoamidopropyl betaine (CAPB). It has been shown that compositions of surfactant with a polymer in the region of low concentrations have a lower surface tension, which is associated with an increase in the surface activity of surfactant - PAA composites in comparison with individual surfactants. The surface tension isotherms were used to determine the critical micelle concentration (CMC) of the surfactant and surfactant-PAA compositions. It was found that the addition of a polymer to a surfactant lowers the CMC by an order of magnitude for the DMDAO - PAA mixture and by more than two orders of magnitude for the CAPB - PAA mixture, which also indicates an increase in the surface activity of the surfactant - polymer mixtures. The use of PAA compositions with surfactants as stabilizers for foams and emulsions opens up prospects for the development of effective emulsifiers and foaming agents.