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Phase relationships of an equivalent mixture of sulfated polyvinyl alcohol and aminoacetalyzed polyvinyl alcohol in microsalt aqueous solution
Author(s) -
Nakajima Akio,
Sato Hiroko
Publication year - 1972
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.1972.360110704
Subject(s) - polyvinyl alcohol , chemistry , coacervate , enthalpy , alcohol , polymer , aqueous solution , phase (matter) , ionic bonding , sulfation , salt (chemistry) , mixing (physics) , entropy (arrow of time) , polymer chemistry , chemical engineering , thermodynamics , organic chemistry , chromatography , ion , biochemistry , physics , quantum mechanics , engineering
A new type of polymer salt was prepared from an equivalent mixture of partly sulfated polyvinyl alcohol (polyanion, Q − ) and partly aminoacetalyzed polyvinyl alcohol (polycation, P + ). With respect to a three‐component system composed of this polymer salt (P + Q − ), water, and a microsalt (K + A − ), phase relationships, as represented by complex coacervation, were investigated. Experimental results were discussed according to a theoretical equation for the free energy of mixing derived by taking into account the entropy and enthalpy contributions as ascribed for non‐ionic polymer solution, and the electrostatic free energy expression as derived by Voorn.