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Pura PVME (lim

IR

Radlatlon

KBr

Wlndow

Pura EMAA film

Figurę 1. Schematic of the ezperimental techniąue used for obsemng mutual diffusion for the EMAA[26]-PVME couple.

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798 High et al.

KBr

Wlndow

Macromolecules, Vol. 25, No. 2, 1992

CH, -CHj-C-	Scheme I	1 X 0 1 r X 0 1
<A» : 1	-CHj-CH- 0.	1 O-R
H h ; 1	'n	H 1
vt	-'1700 cm^-1	|
1 0 X Ał 1 -o- 1		—CH,—C— CH,
rt X -o

•1730 cm

-t

Similarly, interassociation between the acid groups in EMAA and the ether ozygens in PVME is given by

Ka

BA

(2)

Eąuilibrium constanta, Kb and Ka, are deftned in terms of volume fractions and are based upon a standard treatment ofcompeting Chemical eąuilibria. Accordingly, the volume fractions of dimerized and free carbozylic acid groups were shown to be given by the solution of the following set of eąuations:¹⁸-²⁰

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