. 2017 Oct 12;2(10):6668–6676. doi: 10.1021/acsomega.7b01067

Table 1. Weight Ratios of Various Components and the Initial pH Values in the Fabrication of Hydrogel Samples.

sample name	weight ratio of PDDA/TA/FeCl₃^a	initial solution pH
PTFe-1	2:1:0.16	0.87
PTFe-2	4:1:0.16	1.3
PTFe-3	10:1:0.16	1.5
PTFe-4	15:1:0.16	1.7
PTFe-5	20:1:0.16	2.1
sample name	weight ratio of PDDA/TA/Fe₃O₄ NPs	initial solution pH
PDDA/TA/Fe₃O₄	4:1:2	2.9

The molar ratio of TA to Fe³⁺ was fixed at 3:5.