Dielectric study of neutral and charged hydrogels during the swelling process.
作者： Y. Yılmaz , A. Gelir , F. Salehli , R. R. Nigmatullin , A. A. Arbuzov
DOI: 10.1063/1.2349480
关键词: Dielectric 、 Analytical chemistry 、 Dielectric spectroscopy 、 Polyacrylamide 、 Electric field 、 Conductivity 、 Polymer 、 Self-healing hydrogels 、 Materials science 、 Swelling
摘要: Dielectric spectroscopy measurements of conductivity were applied for understanding the change in internal morphology neutral and permanently charged polyacrylamide (PAAm) hydrogels during swelling process. For first time four distinct peaks (each corresponding to a different stage) gel observed this gel. These are related distribution dense polymer regions (they defined as “blobs”) appearing microstructure given PAAm having at least average sizes. heterogeneity decreases due electric field sites. Thus, characteristic behavior becomes almost negligible with permanent SO3− groups. It seems fact causes considerable decrease amplitude overall whole process especially high frequencies. The new theory d...
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sci-hub.se 参考文章(36)
Nicholas A. Peppas, Hydrogels in Medicine and Pharmacy ,(1987)
Jeppe C. Dyre, Thomas B. Schrøder, Universality of ac conduction in disordered solids Reviews of Modern Physics. ,vol. 72, pp. 873- 892 ,(2000) , 10.1103/REVMODPHYS.72.873
Raoul R. Nigmatullin, Alain Le Mehaute, Is there geometrical/physical meaning of the fractional integral with complex exponent? Journal of Non-crystalline Solids. ,vol. 351, pp. 2888- 2899 ,(2005) , 10.1016/J.JNONCRYSOL.2005.05.035
Elliott W. Montroll, George H. Weiss, Random Walks on Lattices. II Journal of Mathematical Physics. ,vol. 6, pp. 167- 181 ,(1965) , 10.1063/1.1704269
R.R. Nigmatullin, G. Smith, Fluctuation-noise spectroscopy and a “universal” fitting function of amplitudes of random sequences Physica A-statistical Mechanics and Its Applications. ,vol. 320, pp. 291- 317 ,(2003) , 10.1016/S0378-4371(02)01600-X
Victor Janas, Ferdinand Rodriguez, Claude Cohen, Aging and Thermodynamics of Polyacrylamide Gels Macromolecules. ,vol. 13, pp. 977- 983 ,(1980) , 10.1021/MA60076A042
Raoul R Nigmatullin, Geoff Smith, The generalized mean value function approach: a new stastistical tool for the detection of weak signals in spectroscopy Journal of Physics D. ,vol. 38, pp. 328- 337 ,(2005) , 10.1088/0022-3727/38/2/018
Philip H. Corkhill, Alan M. Jolly, Chiong O. Ng, Brian J. Tighe, Synthetic hydrogels: 1. Hydroxyalkyl acrylate and methacrylate copolymers - water binding studies Polymer. ,vol. 28, pp. 1758- 1766 ,(1987) , 10.1016/0032-3861(87)90021-8
Eriko Sato Matsuo, Michal Orkisz, Shao-Tang Sun, Yong Li, Toyoichi Tanaka, Origin of Structural Inhomogeneities in Polymer Gels Macromolecules. ,vol. 27, pp. 6791- 6796 ,(1994) , 10.1021/MA00101A018
R.R. Nigmatullin, ‘Fractional’ kinetic equations and ‘universal’ decoupling of a memory function in mesoscale region Physica A-statistical Mechanics and Its Applications. ,vol. 363, pp. 282- 298 ,(2006) , 10.1016/J.PHYSA.2005.08.033