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. 2019 Jan 19;20(2):430. doi: 10.3390/ijms20020430

Table 1.

Characterization of thermoresponsive polymers.

Polymer Molecular Weight LCST (°C) d
GPC 1H NMR b Titration c
Mn a Mw a
P(NIPAAm-co-DMAPAAm) 17,000 4.4 11,000 41.9
P(NIPAAm-co-DMAAm) 15,000 3.5 13,500 41.7

a Determined by GPC using polyethylene glycol as a standard and DMF containing 10 mM LiCl as the mobile phase, b Determined by 1H NMR using CDCl3 as a solvent. c Determined by titration of the terminal carboxyl group, d Defined as the temperature at which the optical transmittance of the polymer solution was 50% of the difference between the maximum and minimum transmittances.