Nanoparticles of Block Ionomer Complexes from Double Hydrophilic Poly(acrylic acid)-b-poly(ethylene oxide)-b-poly(acrylic acid) Triblock Copolymer and Oppositely Charged Surfactant

Table 1 Characterization of Pt BA-b-PEO-b-Pt BA and PAA-b-PEO-b-PAA copolymers

Samples^a	M _n ^b	M _w/M _n ^b	M _n,NMR ^c	DP^c
BA₃₁E₂₂₇BA₃₁	25,700	1.06	18,250	62
AA₃₁E₂₂₇AA₃₁	15,460	1.15	14,760	62

^a BA, E, and AA represented the Pt BA, PEO, and PAA blocks, the subscripts were the degree of polymerization of the Pt BA, PEO, and PAA blocks, respectively
^b BA₃₁E₂₂₇BA₃₁ was determined by GPC in THF at 1.0 mL/min using PS as the standard; AA₃₁E₂₂₇AA₃₁ was determined by GPC in aqueous solution of 0.1 M Na₂SO₄ at 0.6 mL/min using PEO standards
^c Determined from ¹H NMR spectra