Effect of Sodium Dodecyl Sulfate on Coil-Globule Transitions of Poly(N-isopropyl acrylamide)
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概要
- 論文の詳細を見る
Mechanical properties of aqueous solutions of poly(N-isopropylacrylamide) (PNIPAM) were studied over a temperature range from 25℃ to 40℃ using a Zimm viscometer. For a PNIPAM/water system a remarkable increase in specific viscosity, η_<sp>, was found at about 31℃. But in the case of PNIPAM (0.1 g/dl)/sodium dodecyl sulfate (SDS) (0.03 g/dl)/water system a clear decrease in η_<sp> from 0.27 to 0.12 was observed on going through that temperature. The translational diffusion constant was also measured by dynamic light scattering (DLS), and a decrease in the effective hydrodynamic radius by a factor of 1/3 was observed over the same temperature range. These results suggest that SDS prevents the aggregation of polymers without hindering the intramolecular phase transitions.
- 社団法人応用物理学会の論文
- 1997-05-30
著者
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Takahashi Daisuke
Department Of Applied Chemistry Faculty Of Science And Technology Keio University
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Nakajima Haruhiko
Department Of Applied Physics Faculty Of Engineering Tokyo University Of Agriculture And Technology
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Ando Makoto
Department Of Cardiovascular Surgery Sakakibara Heart Institute
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TAKEDA Shinichiro
Department of Applied Physics, Faculty of Engineering, Tokyo University of Agriculture and Technolog
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Ando Makoto
Department Of Applied Physics Faculty Of Engineering Tokyo University Of Agriculture And Technology
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Takahashi Daisuke
Department Of Applied Physics Faculty Of Engineering Tokyo University Of Agriculture And Technology
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Takeda Shinichiro
Department Of Applied Physics Faculty Of Engineering Tokyo University Of Agriculture And Technology
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