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Citation: Xu Gui-Ying, Su Hong-Mei, Li Gan-Zuo, Liu Mu-Xin, Li Fang, Mao Hong-Zhi. The Interaction between Polyacrylamide and Mixed Surfactants[J]. Acta Physico-Chimica Sinica, ;1994, 10(10): 909-914. doi: 10.3866/PKU.WHXB19941009 shu

The Interaction between Polyacrylamide and Mixed Surfactants

1.
Institute of Colloid and Interface Chemistry,Shandong University,Jinan 250100

Received Date: 23 August 1993
Available Online: 15 October 1994

The interaction between polyacrylamide (PAM) and sodium dodecyl sulfonate (R12SO3Na)-Laurate (R11COONa) mixture in various NaOH concentration and mole ratio n(R12S03Na)/n(R11COONa) have been studied by viscosity and ultraviolet-visible spectroscopy. The reduced viscosity measurements show that PAM/R12SO3Na-R11COONa mixed soutions exhibit viscometric behavior of polyelectro1yte-electro -viscous effect. This phenomenon appears even when the concentration of mixed surfactant is smaller than their CMC. The electro-viscous effect of mixed systems increases with the raise of R11COONa amount and the decrease of the concentration of NaOH. These results indicate the complex of PAM-mixed surfactant was taking shape in solution. It was found from ultraviolet visible spectroscopy that hydrogen bond was formed between PAM and R11COOH. The premicelle formation in surfactant solution is posible as concentration of surfactan is smaller than CMC. Therefore, we guess that interaction between PAM and mixed surfactant occurs due to premicelle of mixed surfactans binding to the macro-molecule of PAM by the bydrogen bond of PAM-R11COOH before the formation of the normal micelle.
- Polyacrylamide(PAM),
- Sodium dodecyl sulfonate,
- Laurate,
- Ruduced viscosity,
- Interaction
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