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Citation: GENG Tong-Mou, WU Wen-Hui. Synthesis and Properties of Twin-tailed Hydrophobic Associated Acrylamide/Sodium Acrylate/Dioctylacrylamide Terpolymers[J]. Chinese Journal of Applied Chemistry, ;2005, 22(10): 1112-1116. shu

Synthesis and Properties of Twin-tailed Hydrophobic Associated Acrylamide/Sodium Acrylate/Dioctylacrylamide Terpolymers

GENG Tong-Mou ^a,b,, ,
WU Wen-Hui ^b

1.
a School of Chemistry, Chongqing Normal University, Chongqing 400047;
2.
b School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081

Corresponding author: GENG Tong-Mou,
Received Date: 26 December 2004
Available Online: 15 April 2005
Fund Project: 中国石油化工集团公司十五重大科技攻关项目(P100043) (P100043)

A series of twin-tailed hydrophobically associating water-soluble terpolymers poly(acrylamide/sodium acrylate/dioctylacrylamide)[P(AM/NaAA/DiC₈AM)] were synthesized by micell copolymerization.These polymer systems were characterized by FTIR and ¹H NMR.Their viscosity behavior was examined.When c(total monomers)=1.70~3.20 mol/L,x(DiC₈AM)=0.05%~0.40% and SMR=70~25,the(intrinsic) viscosity values [η] of the terpolymers,which were in the range of 3.67~26.38 dL/g,increased with the increase of the total monomer concentration and the decrease of the hydrophobe mole fraction at 30℃ and in 1 mol/L NaCl aqueous solution while the Huggins constant K_H and average coil density ρ_equ,which were in the ranges of 0.220~3.90 and 0.116~0.681 g/dL respectively,decreased.In the 19 334 μg/g(saline) solution,the apparent viscosity of the terpolymer increased,but the critical association concentration(decreased) with the increase of the total monomer concentration and the hydrophobe mole fraction,and the(decrease) of SMR.The experimental results show that the properties and the association behavior of the terpolymers are pronouncedly dependent on the [η] and the hydrophobe mole fraction of the polymer,as well as the block length and the distribution of the hydrophobe in the polymer chain.
- twin-tailed,
- micell copolymerization,
- water-soluble copolymer,
- hydrophobic association,
- synthesis,
- viscosity
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