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Copolymers of 2‐hydroxyethylmethacrylate and N ‐maleoylglycine: Synthesis, characterization, and swelling behavior
Author(s) -
Jeria Manuel,
Pizarro Guadalupe del C.,
Marambio Oscar G.,
Huerta Margarita,
Valencia Paulina,
Rivas Bernabé L.
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22258
Subject(s) - copolymer , swelling , monomer , polymer chemistry , materials science , thermogravimetry , differential scanning calorimetry , fourier transform infrared spectroscopy , ionic strength , polymer , self healing hydrogels , chemical engineering , chemistry , composite material , aqueous solution , organic chemistry , physics , engineering , thermodynamics
We synthesized copolymers based on 2‐hydroxyethylmethacrylate and N ‐maleoylglycine by varying the monomer feed composition. The copolymers were characterized by Fourier transform infrared spectroscopy, elemental analysis, and thermogravimetry/differential scanning calorimetry as the thermal analysis method. The thermograms showed that the polymers degraded in a single‐stage process. For the hydrogels of poly(2‐hydroxyethylmethacrylate) and poly(2‐hydroxyethylmethacrylate‐ co ‐ N ‐maleoylglycine) [poly(HEMA‐ co ‐MG)], swelling behaviors were investigated by the immersion of the gels in solution at pH's of 3, 5, and 7. The swelling studies were performed with and without ionic strength. The copolymer composition had a significant effect on the equilibrium swelling behavior of poly(HEMA‐ co ‐MG). With those soluble copolymer fractions, we obtained a low conversion (<30%); the monomer reactivity ratios were estimated by the Kelen–Tüdös linear method. The data indicated that poly(HEMA‐ co ‐MG) was a random copolymer. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 1897–1902, 2005