Rheology Behaviors of C22-Tailed Carboxylbetaine in High-Salinity Solution |
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Authors: | Yongmin Zhang Dapeng Zhou Haiyan Ran Hong Dai Pengyun An |
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Institution: | 1. Key Laboratory of Food Colloids and Biotechnology Ministry of Education, Jiangnan University, Wuxi, China;2. School of Chemical &3. Materials Engineering, Jiangnan University, Wuxi, Chinazhangym@jiangnan.edu.cn;5. Zhejiang Zanyu Technology Co. Ltd., Hangzhou, China;6. School of Chemical &7. Materials Engineering, Jiangnan University, Wuxi, China |
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Abstract: | Viscoelastic wormlike micelles have attracted special interests over the past decade due to their unique rheological response. Few efforts were however devoted to the rheological properties of worms in high-salinity solution. Here, worm-containing viscoelastic fluid is designed from single N-erucamidopropyl-N,N-dimethyl carboxybetaine (EMAB), using brine water (total dissolved solids: 32,868 mg L?1; Ca2+] + Mg2+]: 873 mg L?1) as solvent. Upon increasing concentration, EMAB brine solution shows remarkable macroscopic viscoelasticity above a low overlapping concentration (0.04 wt%) without adding special hydrotropes, implying a giant 3D network-like entanglement formation. Such a viscoelastic network aggregates exhibit thermo-induced thickening behavior in a comparable temperature range due to the hydrogen bond interaction, and excellent thermal stability. The apparent viscosity at 170 s?1 can keep above 50 mPa · s at 130°C for 2 hours. These preliminary results will give EMAB a rich prospective for use as rheological modifier, especially for using in some extremely environment such high temperature, high salinity, and high shear. |
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Keywords: | High salinity N-dimethyl carboxybetaine N-erucamidopropyl-N rheology thermal stability viscoelastic fluid wormlike micelles |
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