Viscoelastic relaxation in semidilute and concentrated polymer solutions

Macromolecules 1994,27, 2364

2364

CORRECTIONS

C. S. Patrickios, W. R. Hertler,’ N. L. Abbott, and T. A. Hatton’: Diblock, ABC Triblock, and Random Methacrylic Polyampholytes: Synthesis by Group Transfer Polymerization and Solution Behavior. Volume 27, Number 4,February 14,1994,p 930. Here is a corrected Table 1. Table 1. Methacrylic Polyampholytw (MW = 4000) polymer 1

MMA

MAA

1

1

DMAEMA 1 MAA

MMA 1 MMA 1 MAA

1

MMA

6 7

8 9 10 1I*

12 13 01

RHins01 range

comp of blocks mole ratio

DMAEMA 1 MAA 1 DMAEMA 1 DMAEMA

1

1

1

DMAEMA 1 DMAEMA 1 PEMA-b-DMAEMA 1 12 DMAEMA 12 DMAEMA

MMA 2 PEMA 1 MMA 12 b-MMA-PEMA-b-MMA 6 1 6 MMA

MAA 1 MAA

1.3

1

DMAEMA 0.65 DMAEMA 1

1 MAA 12 MAA 12

5.6-7.7 C9 5.2-7.9 5.2-7.5

MAA

6.6-8.3

MMA

0.65 MAA

4.2-6.0

1

1.3

MAA 1 DMAEMA-CO-MMA-CO-MAA 1 1 1 DMAEMA-CO-MMA-CO-MAA 1.3 1 0.65

MW = 15 OOO, prepared wing THPMA. MW = 2400.

Wyn Brown*and Petr gtgphek: Viscoelastic Relaxation in Semidilute and Concentrated Polymer Solutions. Volume 26,Number 25,December 6,1993,pp 68846890. Corrections: 1. Under Density Measurements, p 6886 should appear as @ = (c/p)(dp/dc)TS = e@’. Values of @’ are included in Table 1. 2. The header in the 3rd column of Table 1should be 8’ instead of P. 3. The ordinate in Figure 5 should be /3’ instead of 8.

0024-9297/94/2227-2364$04.50/0

5.5-7.9

0 1994 American Chemical Society

5.6-7.7

none none