Table 4. Parameters generated from fitting the Equation 19 to experimental data of optical density variation in PNIPA/AA nanohydrogel suspensions as a function of temperature (T, K) and pH.
PNIPA(5) | PNIPA-20AA(5) | |
Tm (K) | 304.31±2.28a | 315.05±1.99b |
(KJ mol−1) | 135.92±58.12a | 64.76±16.10a |
(KJ mol−1 K−1) | −12.97±3.02a | 1.85±1.24b , n.s. |
m1 | 0.53×10−3±2.40×10−3 a , n.s. | 42.96×10−3±6.62×10−3 b |
m2 | −2.11±7.77a , n.s. | −150.15±22.73b |
r2 | 0.9842 | 0.9818 |
Values reported are the means±standard deviation (n = 2).
Statistically significant differences (p<0.05) between nanohydrogels.
Parameter not significant (p>0.05).