The Effect of CaCl₂ on the Solution Behavior of Aromatic Polysulfonamide in Dimethylformamide

Abstract:

The solution behavior of aromatic polysulfonamide (PSA) in dimethylformamide (DMF) with the addition of CaCl₂ was studied by rheology and viscosity measurements. It is shown that no maximum in its intrinsic viscosity as a function of CaCl₂ concentration was observed and the relationship between η_sp and PSA concentration c is consistent with the predicted scaling of θ solvent for both DMF and DMF/4% CaCl₂. However, the intrinsic viscosity, zero shear-rate viscosity and specific viscosity of PSA/DMF/4% CaCl₂ were found larger than that of PSA/DMF, which could be related to the extending of PSA chain in solution due to the increase of the interaction between the PSA macromolecules and solvent with addition of CaCl₂.

• Periodical: Advanced Materials Research (Volumes 560-561)
• Pages: 226-230
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.560-561.226
• Online since: August 2012
• Authors: You Xia Yu, Xin Jun Zhu, Rui Wang, Sheng Hui Chen, Shun Xing Lu, Feng Hua Wang, Yu Mei Zhang, Hua Ping Wang
• Keywords: CaCl₂, Polysulfonamide, Solution, Θ Solvent

References

[1] Y. Chen, D. Wu, S. Chen, X. Wang, Y. Zhang, H. Wang, Physicochemical characterization of two polysulfonamides in dilute solution, Macromol. Symp., 298(2011) 116-123.

DOI: 10.1002/masy.201000023

[2] G. A. Kuznetsov, N. I. Nikiforov, V. P. Lebedev, V. G. Zhuravlev, V. M. Savinov, Investigation of properties of some polysulphonamides in the condensed state, Yysokomol. Soyed., 16(1974) 2711-2716.

DOI: 10.1016/0032-3950(74)90311-6

[3] L. H. Gan, D. J. Blais, D. J. Carlsson, T. Suprunchuk, D. M. Wiles, Physicochemical characterization of some fully aromatic polyamides, J. Appl. Polym. Sci., 19(1975) 69-82.

DOI: 10.1002/app.1975.070190106

[4] S. Zulfiqar, M. Ishaq, Z. Ahmad, M. I. Sarwar, Synthesis, static, and dynamic light scattering studies of soluble aromatic polyamide, Polym. Adv. Technol., 19(2008) 1250-1255.

DOI: 10.1002/pat.1120

[5] D. D. Harwood, J. F. Fellers. Imposed polyelectrolyte behavior of poly(m-phenyleneisophthalamide) in LiCl /dimethylacetamide, Macromolecules, 12(1979) 693-697.

DOI: 10.1021/ma60070a029

[6] C. B. Shogbon, J. Brousseau, H. Zhang, B. Benicewicz, Y. A. Akpalu, Determation of the Molecular Parameters and Studies of the Chain Conformation of Polybenzimidazole in DMAc/LiCl, Macromolecules, 39(2006) 9409-9418.

DOI: 10.1021/ma0609836

[7] A. M. Phadke, D. A. Musale, S. S. Kulkarni, S. K. Karode, Polyacrylonitrile ultrafiltration membrances .I. polymer-salt-solvent interactions, J. Polym. Sci.: B: Polym. Phys., 43(2005) 2061-2073.

DOI: 10.1002/polb.20493

[8] J. L. Bris, M. Vert, E. Selegny, Ion-dipole interactions and chiroptical property changes of an optically active nylon-type polyamide in CaCl2-methanol solutions, J. Polymer, Sci., Symposium, 52(1975) 203-216.

DOI: 10.1002/polc.5070520119

[9] R. H. Colby, Structure and linear viscoelasticity of flexible polymer solutions: comparison of polyelectrolyte and neutral polymer solutions, Rheol. Acta, 49(2009) 425-442.

DOI: 10.1007/s00397-009-0413-5

[10] D. C. Boris, R. H. Colby, Rheology of Sulfonated Polystyrene Solutions, Macromolecules, 31(1998) 5746-5755.

DOI: 10.1021/ma971884i

[11] A. M. Golub, V. I. Golovorushkin, A. K. Dorosh, A. F. Skryshevskii, V, Y. Proshko, Composition and structure of solvate complexes of magnesium and calcium chlorides studied by solubility and x-ray methods, J. Struct, Chem., 14(1974) 919-923.

DOI: 10.1007/bf00745814