Abstract
In this study, intramolecular crosslinking and changes in the chain conformation of a methacrylate terpolymer i.e., poly(dimethylaminoethyl methacrylate-co-methyl methacrylate-co-butyl methacrylate) was traced in dilute solutions as a function of mono- or dicarboxylic acids concentration. Acetic acid was examined as the monocarboxylic acid but dicarboxylic acids were selected as a homologous series including oxalic, succinic and adipic acid. The polymer was dissolved in a solvent mixture consisting of acetone, ethanol and 1-propanol in 60:33.43:6.57 weight percent ratios, respectively. Viscometric data were obtained by dilute solution viscometry using an Ubbelohde capillary viscometer. Chain conformation parameters were determined using two empirical models consisting of Rao and Heller equations. According to the results, tertiary amine functional groups on the terpolymer backbone was protonated due to the reducing pH values after adding acetic acid, which in turn caused an increment in intramolecular repulsive forces induced by electrostatic charges. These repulsive forces expand the polymer coil to helix. Intramolecular crosslinking was observed using dicarboxylic acids when polymer concentrations were lower than the critical overlap concentration.
Similar content being viewed by others
References
Antoniou E, Alexandridis P (2010) Eur Polym J 46:324–335
Antoniou E, Themistou E, Arkar B, Tsianou M, Alexandridis P (2010) Colloid Polym Sci 288:1301–1312
Antoniou E, Buitrago CF, Tsianou M, Alexandridis P (2010) Carbohydr Polym 79:380–390
Ramesh S, Bijan D, Prabir N, Chanchal D (2010) J Polymer Sci, Part B: Polymer Phys 48:1196–1202
Oosava F (1971) Polyelectrolytes. Marcel Dekker, INC, New York
Liaw D, Huang C (1997) J Polym Res 4:57–63
Popescu I, Airinei A, Suflet D, Popa M (2011) J Polym Res 18:2195–2203
Chen W, Hsu C, Huang J, Tsai M, Chen R (2011) J Polym Res 18:1385–1395
Amine H, Karima O, El Amine BM, Meghabar R, Belbachir M (2005) J Polym Res 12:367–371
Kulicke WM, Clasen C (2003) Viscosimetry of polymers and polyelectrolytes. Springer, Hamburg
Liu Y, Fang L, Zheng H, Zhao L, Ge X, He Z (2007) Asian J Pharm Sci 2:106–113
Nichifor M, Stanciu MC, Ghimici L, Simionescu BC (2011) Carbohydr Polym 83:1887–1894
Cilurzo F, Minghetti P, Casiraghi A, Montanari L (2000) J Appl Polym Sci 76:1662–1668
Sannigrahi A, Arunbabu D, Sankar RM, Jana T (2007) Macromolecules 40:2844–2851
Ghosh S, Sannigrahi A, Maity S, Jana T (2010) J Phys Chem B 114:3122–3132
Heuer W (1954) Am Phys Soc 94:1426
Durand A (2007) Polym Eng Sci 47:481–488
Vink H (1992) Polymer 33:3711–3716
Durand A (2007) Eur Polymer J 43:1744–1753
Dragan S, Mihai M, Ghimici L (2003) Eur Polymer J 39:1847–1854
Racovita S, Vasiliu S, Neagu V (2010) Iran Polym J 19:333–341
Ghimici L, Bercea M (2009) Mater Plast 46:111–120
Wanchoo RK, Thakur A (2008) Chem Biochem Eng 22:15–24
Minghetti P, Cilurzo F, Casiraghi A, Montanari L (1999) Int J Pharm 190:91–101
Ng WK, Tam KC, Jenkins RD (1999) Eur Polymer J 35:1245–1252
Pertusatti J, Prado A (2007) J Colloid Interface Sci 314:484–489
Skoog A, West W, Holler J (1992) Fundumentals of analytical chemistry. Saunders College
EUDRAGIT E 100. http://eudragit.evonik.com
Bordwell pKa Table (Acidity in DMSO) http://www.chem.wisc.edu/areas/reich/pkatable/
pKa Values. http://research.chem.psu.edu/brpgroup/pKa_compilation.pdf
Tsaih M, Chen R (1999) J Appl Polym Sci 73:2041–2050
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Babaie, M., Imani, M. & Azizi, H. Chain conformation and intramolecular crosslinking of poly(dimethylaminoethyl methacrylate-co-methyl methacrylate-co-butyl methacrylate) in the presence of mono- or dicarboxylic acids: a dilute solution viscometry study. J Polym Res 20, 35 (2013). https://doi.org/10.1007/s10965-012-0035-y
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s10965-012-0035-y