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H‐complex formation and influence on the radical copolymerization of acrylic acid and 1‐vinyl‐2‐pyrrolidone in tetrahydrofuran
Author(s) -
Georgiev George S.,
Koseva Nely S.,
Christov Latchezar K.
Publication year - 1995
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1995.210370406
Subject(s) - tetrahydrofuran , copolymer , 2 pyrrolidone , acrylic acid , polymer chemistry , solvent , molecule , chemistry , organic chemistry , polymer
The association constant of the H‐complex formation between acrylic acid and 1‐vinyl‐2‐pyrrolidone in tetrahydrofuran at 22°C ( K 1 = 1350 mol 1 −1 ) was determined by means of 1 H NMR spectroscopy. A detailed equation for the copolymer composition, accounting for the participation in the chain propagation of the above complex and that between acid and solvent molecules, was derived. It was used for evalution of the relative reactivities of the complexes discussed and of the uncomplexed 1‐vinyl‐2‐pyrrolidone molecules.