Citation: CHEN Hong, WU Xiao-Yan, YE Zhong-Bin, HAN Li-Juan, LUO Ping-Ya. Self-Assembly Behavior of Hydrophobically Associating Polyacrylamide in Salt Solution[J]. Acta Physico-Chimica Sinica, ;2012, 28(04): 903-908. doi: 10.3866/PKU.WHXB201202171 shu

Self-Assembly Behavior of Hydrophobically Associating Polyacrylamide in Salt Solution

1.
1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, P. R. China;
2. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China

Received Date: 31 October 2011
Available Online: 17 February 2012
Fund Project: 中国石油科技创新基金(2011D-5006-0209)资助项目 (2011D-5006-0209)

The self-assembly behavior of hydrophobically associating polyacrylamide (HAPAM) in salt solution was studied by static light scattering, dynamic light scattering, and atomic force microscopy (AFM). The apparent weight average molecular weight (M_w,a), root mean square radius of gyration (<R_g>), hydrodynamic radius (<R_h>), and the second virial coefficient (A₂), were investigated. The ratio of <R_g> to <R_h> was used to determine the molecular shape of the polymer in salt solution. As the salt concentration increased, the polymer chain transformed from stretch to curl.
- Hydrophobically associating polyacrylamide,
- Dynamic light scattering,
- Static light scattering,
- Viscosity,
- Aggregation behavior,
- Atomic force microscopy
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