Abstract
Homogeneous copolymers of N-vinylpyrrolidone (VP) and vinyl acetate (VA) which form clear aqueous solutions were prepared by free radical polymerization in a solution of isopropanol alcohol, using 2,2-azobisisobutyronitrile as an initiator. They were characterized by FTIR, 1H-NMR, and element analysis studies. The reactivity ratios of the monomer were computed by the Extended Kelen–Tüdós method at high conversions, using data from both 1H-NMR and elemental analysis studies. The reactivity ratios of VP and VA in a homogenous copolymer were observed to be very different from that of a heterogeneous copolymer. Additional information was obtained by finding out the sequence length distribution for copolymers.
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References
I. Mathakiya and A. K. Rakshit, J. Appl. Polym. Sci. 68, 91 (1998).
R. Blankenburg, S. Kothrade and A. Sanner, U.S. Patent 6,103,820 (August 15, 2000), assigned to BASF Aktiengesellschaft.
S. Wetzel, J. Thorpe, C. Roland and D. M. Terry, U.S. Patent 5,506,318 (April 9, 1996), assigned to Air Products and Chemicals, Inc.
E. S. Barabas and J. R. Cho, U.S. Patent, 4,554,311 (November 19, 1985), assigned to GAF Corporation.
B. Potthoff-Karl, A. Nuber, W. Hinz and A. Sanner, U.S. Patent 5,122,582 (June 16, 1992), assigned to BASF Aktiengesellschaft.
E. S. Barabas and J. R. Cho, U.S. Patent 4,520,179 (May 28, 1985), assigned to GAF Corporation.
F. Straub, H. Spoor, H. Schenck and W. Schwarz, U.S. Patent 4,182,851 (January 8, 1980), assigned to BASF Aktiengesellschaft.
Y. Zhong, H. Parikh et al., U.S. Patent 5,319,041 (June 7, 1994), assigned to ISP Investments, Inc.
Y. Zhong, H. Parikh et al., U.S. Patent 5,395,904 (March 5, 1995), assigned to ISP Investments, Inc.
Y. Zhong and P. Wolf, J. Appl. Polym. Sci., 74, 345 (1999).
M. Foroutan and M. A. Jafarizadeh, PhysicaA, 307, 221 (2002).
M. Foroutan and M. A. Jafarizadeh, PhysicaA, 329, 337 (2003).
P. J. Flory, in Principles of Polymer Chemistry, Cornell University Press, New York, 1953.
S. Dong, Y. Wel and Z. Zhang, J. Appl. Polym. Sci., 74, 516 (1999).
N. Pekel et al., Eur. Polym. J., 37, 2443 (2001).
R. M. Silverstien, R. G. Bessler and T. C. Morril, Spectroscopic Identification of Organic Compounds, 4 th Edit., Wiley, New York, 1981.
T. Kelen, F. Tüdós, T. Foldes-Berezsnich and B. Turcsanyi, J. Macro-mol. Sci. Chem. (A), 10, 1707 (1976).
W. Bruns, I. Motoc et al., Monte Carlo Applications in Polymer Science, Lecture Notes in Chemistry 27, 1 st Edit., Springer Verlag, Germany, 1981.
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Taghizadeh, M.T., Foroutan, M. Water-soluble Copolymers of N-vinylpyrrolidone and Vinyl Acetate: Synthesis, Characterization, and Monomer Reactivity at High Conversions. Journal of Polymer Research 11, 203–209 (2004). https://doi.org/10.1023/B:JPOL.0000043406.66299.78
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DOI: https://doi.org/10.1023/B:JPOL.0000043406.66299.78