Calculated swelling ratios of the synthesized hydrogels.

Sample	Initial weight	Swollen weight	Swelling ratio
GO1–CTS5	150 mg	16 196 mg	106.97
GO2–CTS5	150 mg	13 872 mg	91.48
GO3–CTS5	150 mg	6829 mg	45.52
GO4–CTS5	150 mg	4357 mg	28.04