Table 2.

Measurement of swelling property of hydrogel

Sample id	Swelling (g/g)
GG-g-P(NIPAM-co-AA)-GNAGO-0	3.14
GG-g-P(NIPAM-co-AA)/GO (1 mg)- GNAGO-1	3.07
GG-g-P(NIPAM-co-AA)/GO (2 mg)- GNAGO-2	3.15
GG-g-P(NIPAM-co-AA)/GO (3 mg)- GNAGO-3	3.43
GG-g-P(NIPAM-co-AA)/GO (4 mg)- GNAGO-4	3.15
GG-g-P(NIPAM-co-AA)/GO (5 mg)- GNAGO-5	2.95