Table 1.
Feeding ratios of monomer MAETAC to monomer PEGMA in the prepolymerization solutions for the preparation of hydrogel samples and elemental analysis of these samples. The prepared hydrogel samples showed different appearance according to the feeding ratio of the two monomers.
| Hydrogel Names |
Ratio of MAETAC to PEGMA |
Elemental Analysis |
Final Gel Appearance |
||||
|---|---|---|---|---|---|---|---|
| v/v | w/w | n/n | % C | % H | % N | ||
| HS-1 | 9.00 | 6.77 | 11.74 | 40.93 | 9.10 | 4.55 | Clear |
| HS-2 | 4.00 | 3.01 | 5.22 | 42.94 | 9.09 | 4.21 | White |
| HS-3 | 2.33 | 1.76 | 3.04 | 44.15 | 8.96 | 3.74 | White |
| HS-4 | 1.50 | 1.13 | 1.96 | 46.17 | 9.06 | 3.35 | White |
| HS-5 | 1.00 | 0.75 | 1.30 | 48.65 | 9.11 | 3.00 | White |
| HS-6 | 0.67 | 0.50 | 0.87 | 49.35 | 8.93 | 2.34 | White |
| HS-7 | 0.43 | 0.32 | 0.56 | 49.64 | 8.86 | 1.74 | White |
| HS-8 | 0.25 | 0.19 | 0.33 | 50.97 | 8.77 | 1.19 | White |
| HS-9 | 0.11 | 0.08 | 0.14 | 52.79 | 8.51 | 0.63 | Clear |
| HS-10 | 0.05 | 0.04 | 0.07 | 54.30 | 8.15 | 0.29 | Clear |
| HS-11 | 0.01 | 0.01 | 0.01 | 54.39 | 8.16 | <0.05 | Clear |
Note the elemental composition of MAETAC (C9H18NO2Cl, Mw = 207.7) is as follows: C: 52.0%; H: 8.7%; and N: 6.7%. v/v, w/w, and n/n stand for the volume ratio, mass ratio and molar ratio of MAETAC monomer to PEGMA monomer, respectively.