Table 1. Molecular Weights and Compositions of PS–PEO–PS Block Copolymers.

samples	Mn,PEOa (g mol–1)	Mn,PSb (g mol–1)	Mn,totalc (g mol–1)	wt % PEO/PS	PDId
SES-1	8000	1560 × 2	11 120	71.9:28.1	1.26
SES-2	8000	2500 × 2	13 000	61.5:38.5	1.1
SES-3	8000	4800 × 2	17 600	45.5:54.5	1.23
SES-4	8000	10 400 × 2	28 800	27.7:72.3	1.23
SES-5	8000	24 250 × 2	56 500	16.5:83.5	1.33

^aM_n,PEO provided by the supplier.

^bM_n,PS was determined by NMR.

^cM_n,total was the sum of M_n,PEO and M_n,PS.

^dPDI was obtained from GPC using tetrahydrofuran (THF) as the mobile phase and PS as the standard sample.