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Effect of pH on the rheology of pH−1–14-treated PAPS. Storage (A) and loss (B) moduli and of pH−1–14-treated PAPS samples with angular frequency increasing at an aqueous solution (1% w/v). (C) The relationship between the modulus and pH of PAPS at an aqueous solution (1% w/v). (D) The apparent morphology of PAPS at an aqueous solution (1% w/v) under different pH.
