Miscibility Behavior of Polyacrylamides Poly(Ethylene Glycol) Blends: Flory Huggins Interaction Parameter Determined by Thermal Analysis

Maria Elisa S. R. Silva, Valdir Mano, Raquel R. J. Pacheco, Roberto F. S. Freitas

Department de Natural Sciences, Federal University of S?o Jo?o del Rei, S?o Jo?o del Rei, Minas Gerais, Brazil.
Department of Chemical Engineering, Federal University of Minas Gerais, Belo Horizonte, Brazil.

DOI: 10.4236/jmp.2013.47A2007                

Abstract

Blends of polyacrylamide—PAM, poly(N-isopropylacrylamide)—PNIPAAm, poly(N-tert-butylacrylamide)—PTBAA, poly(N,N-dimethylacrylamide)—PDMAA and poly(N,N-diethylacrylamide)—PDEAA with poly(ethylene glycol)— PEG were prepared by casting in methanol and water at concentrations of 20 wt%, 40 wt%, 60 wt%, and 80 wt% in PEG. The miscibility of the components was studied by Differential Scanning Calorimetry—DSC. All blend systems are characterized by a single glass transition temperature (T_g), close to the T_g of the amorphous component. The Hoffman Weeks method was used to determine equilibrium melting temperature (T_m) data. The determination of the melt point depression of the blends allowed the calculation of Flory-Huggins interaction parameter (χ₁₂) of the two polymers in the melt, by using the Nishi Wang equation. The interaction parameters, calculated for all the blends, are slightly negative and close to zero, suggesting a partial miscibility between the components.

Keywords

Polyacrylamides; Poly(Ethylene Glycol); Polymer Blends; Flory-Huggins Interaction Parameter; Differential Scanning Calorimetry

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	R. F. S. Freitas and E. L. Cussler, Chemical Engineering Science, Vol. 42, 1987, pp. 97-103. doi:10.1016/0009-2509(87)80213-0
[2]	R. G. Sousa, R. F. S. Freitas and W. F. Magalhaes, Polymer, Vol. 39, 1998, pp. 3815-3819. doi:10.1016/S0032-3861(97)10341-X
[3]	W. M. Thomas and D. W. Wang, “Encyclopedia of Polymer Science Engineering,” John Wiley & Sons, New York, 1988.
[4]	F. Zeng, X. Zheng and Z. Tong, Polymer, Vol. 39, 1998, pp. 1249-1251. doi:10.1016/S0032-3861(97)00471-0
[5]	J. Klein and R. Heitzmann, Die Makromolekulare Chemie, Vol. 179, 1978, pp. 1895-1904. doi:10.1002/macp.1978.021790803
[6]	E. A. Smith and F. W. Oehme, Journal of Chromatographic. Science, Vol. 31, 1993, pp. 192-195. doi:10.1093/chromsci/31.5.192
[7]	S. C. S. Teixeira, Proceedings of the 3rd Congresso Brasileiro de Polímeros, Rio de Janeiro, 30 October-2 November 1995, p. 925.
[8]	M. E. S. R. Silva, E. R. Dutra, V. Mano and J. C. Machado, Polymer Degradation and Stability, Vol. 67, 2000, pp. 491-495. doi:10.1016/S0141-3910(99)00149-4
[9]	A. S. Hoffman, Advanced Drug Delivery Reviews, Vol. 54, 2002, pp. 3-12. doi:10.1016/S0169-409X(01)00239-3
[10]	T. R. Hoare and D. S. Kohane, Polymer, Vol. 49, 2008, pp. 1993-2007. doi:10.1016/j.polymer.2008.01.027
[11]	M. R. Jin, C. F. Wu, P. Y. Lin and W. J. Hou, Journal of Applied Polymer Science, Vol. 56, 1995, pp. 285-288. doi:10.1002/app.1995.070560220
[12]	H. Kanazawa, Y. Kashiwase, K. Yamamoto, Y. Matsushima, A. Kikuchi, Y. Sakurai and T. Okano, Analytical Chemistry, Vol. 69, 1997, pp. 823-830. doi:10.1021/ac961024k
[13]	G. C. Tavares, M. E. S. R. Silva, R. G. Sousa and R. F. S. Freitas, Macromolecular Symposia, Vol. 319, 2012, pp. 10-14. doi:10.1002/masy.201200009
[14]	M. A. Silva, “Blendas de poli(óxido de etileno) com poli (epicloridrina) e com poli(epicloridrina-co-óxido de etileno): Comportamento de fases, miscibilidade e morfologia,” M.Sc. Dissertation, UNICAMP, Campinas, 1995.
[15]	A. C. Quental, F. P. Carvalho, E. S. Tada and M. I. Felisberti, Química Nova, Vol. 33, 2012, pp. 438-436. doi:10.1590/S0100-40422010000200035
[16]	D. S. Rosa, C. G. F. Guedes, C. M. Oliveira and M. I. Felisberti, Journal of Polymers and the Environment, Vol. 16, 2008, pp. 230-240. doi:10.1007/s10924-008-0114-7
[17]	D. F. Parra, J. Fusaro, F. Gaboardi and D. S. Rosa, Polymer Degradation and Stability, Vol. 91, 2006, pp. 1954-1959. doi:10.1016/j.polymdegradstab.2006.02.008
[18]	H. J. Chiu, Polymer, Vol. 46, 2005, pp. 3906-3913. doi:10.1016/j.polymer.2005.03.032
[19]	M. A. Silva, M. A. De Paoli and M. I. Felisberti, Polymer, Vol. 39, 1998, pp. 2551-2556. doi:10.1016/S0032-3861(97)00574-0
[20]	T. Nish, T. T. Wang and T. K. Kwei, Macromolecules, Vol. 8, 1975, pp. 227-234.
[21]	P. J. Flory, “Principles of Polymer Chemistry,” Cornell University Press, Ithaca, 1953.
[22]	J. D. Hoffman and J. J. Weeks, Journal of Chemical Physics, Vol. 37, 1962, pp. 1723-1741. doi:10.1063/1.1733363
[23]	M. M. Cortazar, M. E. Calahorra and G. M. Guzman, European Polymer Journal, Vol. 18, 1982, pp.165-166. doi:10.1016/0014-3057(82)90196-3
[24]	S. Cimmino, E. Di Pace, E. Martuscelli and C. Silvestre, Die Makromolekulare Chemie, Vol. 191, 1990, pp. 2447-2454. doi:10.1002/macp.1990.021911022
[25]	M. Avella and E. Martuscelli, Polymer, Vol. 29, 1988, pp. 1731-1737. doi:10.1016/0032-3861(88)90384-9
[26]	S. M. S. Neiro, D. C. Dragunsky, A. F. Rubira and E. C. Muniz, European Polymer Journal, Vol. 36, 2000, pp. 583-589. doi:10.1016/S0014-3057(99)00082-8
[27]	G. Dreezen, Z. Fang and G. Groeninckz, Polymer, Vol. 40, 1999, pp. 5907-5917. doi:10.1016/S0032-3861(98)00809-X
[28]	L. L. Zang, S. H. Goh, S. Y. Lee and G. R. Hee, Polymer, Vol. 41, 2000, pp. 1429-1439. doi:10.1016/S0032-3861(99)00320-1
[29]	R. L. Oréfice, W. L. Vasconcelos and M. A. S. Moraes, Polímeros: Ciência e Tecnologia, Vol. 14, 2004, pp. 129-133. doi:10.1590/S0104-14282004000200017
[30]	H. Y. Yoo, S. Umemoto, T. Kikutani and N. Okui, Polymer, Vol. 35, 1994, pp. 117-122. doi:10.1016/0032-3861(94)90058-2
[31]	P. C. Painter, S. L. Shenoy, D. E. Bhagwagar, J. Fishburn and M. M. Coleman, Macromolecules, Vol. 24, 1991, pp. 5623-5629. doi:10.1021/ma00020a022
[32]	H. S. Lee, W. N. Kim and C. M. Burns, Journal of Applied Polymer Science, Vol. 64, 1997, pp. 1301-1308. doi:10.1002/(SICI)1097-4628(19970516)64:7<1301::AID-APP9>3.0.CO;2-N
[33]	A. Linares and J. L. Acosta, Journal of Applied Polymer Science, Vol. 67, 1998, pp. 997-1004. doi:10.1002/(SICI)1097-4628(19980207)67:6<997::AID-APP5>3.0.CO;2-H
[34]	E. G. Koulouri and J. K. Kallitsis, Polymer, Vol. 39, 1998, pp. 2373-2379. doi:10.1016/S0032-3861(97)00542-9
[35]	J. I. Marcos, E. Orlandi and G. Zerbi, Polymer, Vol. 31, 1990, pp. 1899-1903. doi:10.1016/0032-3861(90)90014-P
[36]	Z. Qiu, K. Motonori, I. Takayuki and N. Toshio, Polymer, Vol. 44, 2003, pp. 8111-8117. doi:10.1016/j.polymer.2003.10.030
[37]	G. Z. Papageorgiou, D. N. Bikiaris and C. G. Panayiotou, Polymer, Vol. 52, 2011, pp. 4553-4561. doi:10.1016/j.polymer.2011.07.050