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. Author manuscript; available in PMC: 2009 Dec 15.
Published in final edited form as: J Polym Sci B Polym Phys. 2008 Dec 15;46(24):2803–2810. doi: 10.1002/polb.21590

Figure 1.

Figure 1

Dependence of the swelling degree (1/φ) of PAA gels on the pH (upper x-axis) and CaCl2 concentration (lower x-axis) of the equilibrium 100 mM NaCl solution.