Dynamic Properties of Polyampholyte Hydrogel Elucidated by Proton NMR Spin-spin Relaxation Time

doi:10.1007/s40242-013-3151-2

Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (6): 1203-1207.doi: 10.1007/s40242-013-3151-2

• Articles • Previous Articles Next Articles

Dynamic Properties of Polyampholyte Hydrogel Elucidated by Proton NMR Spin-spin Relaxation Time

LU Cui-ge^1,2, XU Kun¹, LI Wen-bo^1,2, LI Peng-chong^1,2, TAN Ying¹, WANG Pi-xin¹

1. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Received:2013-04-02 Revised:2013-05-27 Online:2013-12-01 Published:2013-06-24
Contact: WANG Pi-xin E-mail:pxwang@ciac.jl.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.21004065, 51073153).

Abstract

Abstract:

¹H spin-spin relaxation time(T₂) measurement of polyampholyte hydrogel poly(methylacrylic acid-acryloyloxyethyl trimethylammonium chloride)[P(MA-DAC)] in different pH, ionic strength and temperature was carried out to reveal the molecular mobility. Spontaneous volume transition of the polyampholyte hydrogel was also investigated by spin-spin relaxation time measurement. Meanwhile T₂ and the proton component fraction were acquired to study the swelling behaviour of the hydrogel. Moreover the changes of T₂ characterized the molecular mobility of polyampholyte hydrogel in various swelling states. And the results suggest that the mobility of the main chains and a few free side chains(the long T₂) of P(MA-DAC) was dominated by the mesh size in the hydrogel network, depending on the swelling ratio(Q) and the mobility of the side chains(the short T₂) was influenced by electrostatic interaction between different charges in polymer side chains. Finally the T₂ measurements of P(MA-DAC) hydrogel in the spontaneous swelling-deswelling process demonstrated the electrostatic interaction of the charged side chains caused deswelling behavior. At the same time, the mobility state transition temperature of the charged side chains was also studied by the ¹H spin-spin relaxation time measurements, and the transition activation energy of the side chains is 2.72 kJ.

Key words: Spin-spin relaxation time, Molecular mobility, Polyampholyte hydrogel, Swelling behavior

LU Cui-ge, XU Kun, LI Wen-bo, LI Peng-chong, TAN Ying, WANG Pi-xin. Dynamic Properties of Polyampholyte Hydrogel Elucidated by Proton NMR Spin-spin Relaxation Time[J]. Chemical Research in Chinese Universities, 2013, 29(6): 1203-1207.

References

[1] Mafé S., Manzanares J. A., English A. E., Tanaka T., Physical Review Letters, 1997, 79, 3086
[2] Shibayama M.,Tanaka T., Dušek K., Advances in Polymer Science, Vol.109, Volume Phase Transition and Related Phenomena of Polymer Gels, in Responsive Gels: Volume Transition I, Springer Berlin, Heidelberg, 1993
[3] Tanaka T., Sato E., Hirokawa Y., Hirotsu S., Peetermans J., Physical Review Letters, 1985, 55, 2455
[4] Dai H., Chen Q., Qin H., Guan Y., Shen D., Hua Y., Tang Y., Xu J., Macromolecules, 2006, 39, 6584
[5] Kanekiyo Y., Sano M., Iguchi R., Shinkai S., Journal of Polymer Science Part A: Polymer Chemistry, 2000, 38, 1302
[6] Ramachandran S., Flynn P., Tseng Y., Yu Y. B., Chemistry of Materials, 2005, 17, 6583
[7] Ando I., Webb G. A., Magnetic Resonance in Chemistry, 1986, 24, 557
[8] Ogawa K., Nakayama A., Kokufuta E., Langmuir, 2003, 19, 3178
[9] Ogawa Y., Ogawa K., Wang B., Kokufuta E., Langmuir, 2001, 17, 2670
[10] Corpart J. M., Candau F., Macromolecules, 1993, 26, 1333
[11] Skouri M., Munch J. P., Candau S. J., Neyret S., Candau F., Macromolecules, 1994, 27, 69
[12] Bratko D., Chakraborty A. K., The Journal of Physical Chemistry, 1996, 100, 1164
[13] George K. A., Wentrup-Byrne E., Hill D. J. T., Whittaker A. K., Biomacromolecules, 2004, 5, 1194
[14] Keys K. B., Andreopoulos F. M., Peppas N. A., Macromolecules, 1998, 31, 8149
[15] Xu K., Wang J., Chen Q., Yue Y., Zhang W., Wang P., Journal of Colloid and Interface Science, 2008, 321, 272
[16] Valencia J., Piérola I.F., Journal of Applied Polymer Science, 2002, 83, 191
[17] Brereton M. G., Macromolecules, 1990, 23, 1119
[18] Kanekiyo M., Kobayashi M., Ando I., Kurosu H., Amiya S., Macromolecules, 2000, 33, 7971
[19] Krygier E., Lin G., Mendes J., Mukandela G., Azar D., Jones A. A., Pathak J. A., Colby R. H., Kumar S. K., Floudas G., Krishnamoorti R., Faust R., Macromolecules, 2005, 38, 7721
[20] Novoa-Carballal R., Fernandez-Megia E., Riguera R., Biomacro-molecules, 2010, 11, 2079
[21] Ohta H., Ando I., Fujishige S., Kubota K., Journal of Polymer Science Part B: Polymer Physics, 1991, 29, 963
[22] Pileio G., Guo Y., Pham T. N., Griffin J. M., Levitt M. H., Brown S. P., Journal of the American Chemical Society, 2007, 129, 10972
[23] Sanefuji T., Ando I., Inoue Y., Uematsu I., Shoji A., Macromolecules, 1985, 18, 583
[24] Tolman J. R., Al-Hashimi H. M., Kay L. E., Prestegard J. H., Journal of the American Chemical Society, 2001, 123, 1416
[25] Vaca Chávez F. N., Saalwächter K., Macromolecules, 2011, 44, 1560
[26] Baranowska H. M., Sikora M., Kowalski S., Tomasik P., Food Hydrocolloids, 2008, 22, 336
[27] Gao S., Chapman W. G., House W., Journal of Magnetic Resonance, 2009, 197, 208
[28] Roudaut G., Farhat I., Poirier-Brulez F., Champion D., Carbohydrate Polymers, 2009, 77, 489
[29] Valentín J. L., López D., Hernández R., Mijangos C., Saalwächter K., Macromolecules, 2008, 42, 263
[30] Sui Z., Jaber J. A., Schlenoff J. B., Macromolecules, 2006, 39, 8145
[31] Zhao Y., Su H., Fang L., Tan T., Polymer, 2005, 46, 5368

Dynamic Properties of Polyampholyte Hydrogel Elucidated by Proton NMR Spin-spin Relaxation Time

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 0

Recommended Articles

Metrics

Comments