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Physical properties of hydrogels of poly(2‐hydroxyethyl methacrylate) and copolymers with mono‐methyl itaconate synthesized by bulk and solution polymerization
Author(s) -
Barcellos I O,
Pires A T N,
Katime Issa
Publication year - 2000
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/1097-0126(200008)49:8<825::aid-pi461>3.0.co;2-5
Subject(s) - swelling , materials science , self healing hydrogels , polymer chemistry , copolymer , polymerization , kinetics , polymer , methacrylate , reaction rate constant , arrhenius equation , molar mass , methyl methacrylate , chemical engineering , composite material , physics , quantum mechanics , engineering
The physical properties found during the swelling process of poly(2‐hydroxyethyl methacrylate) (PHEMA) and of copolymers of HEMA with mono‐n‐methyl itaconate, synthesized by solution and bulk polymerization, are reported. The swelling kinetics were followed at four different temperatures (295, 300, 305 and 310 K). Experimental data follow second‐order swelling kinetics, from where the kinetic rate constant k ∞ and the swelling capacity at equilibrium W ∞ were calculated as a function of temperature. The kinetic rate constant obeys Arrhenius behaviour. The following network parameters were determined for the hydrogels: Young's moduli E , effective crosslinking density v e , molar mass per crosslink M C , volume fraction ϕ 2 and polymer‐liquid interaction parameter χ. © 2000 Society of Chemical Industry