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Cross-linked films of copolymers of 2-hydroxyethyl methacrylate (HEMA) and triethylenglycol dimethacrylate (TEGDMA) were prepared by free radical polymerization initiated at 60°C. The swelling behaviour of films prepared with 2, 5 and 10 mol% of TEGDMA was followed gravimetrically and the diffusion coefficients were determined according to the Fickian law at several temperatures in the interval 25-50°C...
The comparative reactivity of new tertiary amine activators with the basic chemical structure of N,N-dimethyl-4-toluidine, but reduced toxicity, is analysed. The leaching of the amine compounds from cured cements was studied by analysis of the concentration of the corresponding amine in a physiological saline solution after 3 months of immersion, giving lower values for the new amine compounds as...
Poly(l-lactide) macromonomers have been copolymerized with methyl methacrylate, methyl acrylate N, N -dimethyl acrylamide (DMA) and N-vinyl pyrrolidone (VP) in order to obtain biodegradable-biocompatible comb-like copolymers with different hydrophilic characteristics. Comonomer reactivity ratios have been determined and compared with those obtained when the same comonomers are copolymerized with...
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