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Elastic and swelling behavior of 2‐hydroxyethyl methacrylate, diethylene glycol methacrylate, and methacrylic acid copolymers
Author(s) -
Krakovský Ivan,
Jelínková Miroslava,
Vacík Jiří
Publication year - 1997
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/(sici)1097-4628(19970613)64:11<2141::aid-app10>3.0.co;2-7
Subject(s) - methacrylate , methacrylic acid , diethylene glycol , swelling , copolymer , polymer chemistry , materials science , 2 hydroxyethyl methacrylate , ethylene glycol , polymer , elastic modulus , dynamic mechanical analysis , composite material , chemistry , organic chemistry
Abstract The elastic and swelling behavior of copolymers of 2‐hydroxyethyl methacrylate, diethylene glycol methacrylate, and methacrylic acid crosslinked with ethylene glycol dimethacrylate has been studied. In the range of copolymer composition studied, Young's modulus of the swollen networks increases with the content of methacrylic acid, and its dependence on the content of diethylene glycol methacrylate passes through a maximum. The concentrations of the elastic network chains and determined from Young's moduli of swollen networks are much higher than those calculated from stoichiometry. This effect is attributed to the presence of additional physical crosslinks due to water‐induced ordering of the hydrophobic backbone chains. Both the elastic and swelling behavior of the polymers mentioned above are decisive for their application in the preparation of soft contact lenses. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 2141–2148, 1997