Figure 2 | Scientific Reports

Figure 2

From: Design and optimization of metformin hydrophobic ion pairs for efficient encapsulation in polymeric drug carriers

Figure 2

%Transmittance change versus pH for metformin hydrochloride (MET) with different ligands. (A) Carbopol (CB), (B) Sodium dodecyl sulfate (SDS) below critical micelle concentration (CMC), (C) SDS above CMC, (D) Tannic acid (TA), (E) Sodium deoxycholate (SDC), and (F) Low molecular weight pectin (LMP), compared to free MET and free ligand solutions. Black arrows show starting pH of ligand/MET mixture before pH adjustment. The pink plot area shows the pH range where both MET and ligand are ionized.

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