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.