Abstract
Swelling behavior of polyacrylamide gels in water/acetonitrile system is examined. The linear swelling ratio of the gels decreases with increasing temperature when the water content of the mixtures is low but increases with increasing temperature for the gel in pure water. At high temperatures, the swelling ratio increases with increasing water content of the mixtures. On the other hand, swelling ratio at low temperatures shows interesting behavior: The temperature dependence curves of the linear swelling ratio became convergent for the gels in the mixed solvents, and the data points obtained in the phase-separated circumstances are well superimposed to form a single curve, which can be explained by the Gibbs phase rule. A drastic change occurs in solvent composition inside the gel as well as in the gel volume by cooling, which corresponds to a crossover from collapsed to swollen state of the polymer gels.
Similar content being viewed by others
References
Dušek K, Patterson D (1968). J Polym Sci Part-A 26:1209
Tanaka T (1978). Phys Rev Lett 40:820
Shibayama M, Tanaka T (1993). Adv Polym Sci 109:1
Inomata H, Goto S, Konno M, Saito S (1990). Macromolecules 23:4887
Onuki A (1993). Adv Polym Sci 109:63
Hirotsu S (1993). Adv Polym Sci 110:1
Takigawa T, Yamawaki T, Takahashi K, Masuda T (1999). Polym J 31:595
Takahashi K, Takigawa T, Masuda T (2004). J Chem Phys 120:2972
Kobayashi T, Horinaka J, Takigawa T (2018). J Appl Polym Sci 135:46366
Brochard F, de Gennes PG (1980). Ferroelectorics 30:33
To K, Choi H (1998). Phys Rev Lett 80:536
Grabowski C, Mukhopadhyay A (2007). Phys Rev Lett 98:207801
Sumi T, Kobayashi K, Sekino H (2007). J Chem Phys 127:164904
Pence DN, Gu T (1994). Sep Technol 6:261
Riddick JA, Bunger WB (1970) Organic solvents3rd edn. Wiley-Interscience, New York
see for example, Atkins P, de Paula J, Keeler J (2018) Physical chemistry11th edn. Oxford University Press, Oxford
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Additional information
Publisher’s note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Hattori, K., Horinaka, Ji. & Takigawa, T. Swelling behavior of a polyacrylamide gel in water/acetonitrile mixtures across the solvent phase separation temperatures. Colloid Polym Sci 298, 435–440 (2020). https://doi.org/10.1007/s00396-020-04633-4
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00396-020-04633-4