Results 121 to 130 of about 12,417 (163)
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Thermal degradation of copolymers of 2-hydroxyethyl methacrylate and alkyl methacrylates
European Polymer Journal, 1982Abstract Thermal degradation of homopolymers of ethyl methacrylate (I), n-butyl methacrylate (II), 2-hydroxyethyl methacrylate (III), and copolymers of III with I and II were carried out by thermal volatilization analysis (TVA) up to 440°C with subsequent subambient thermal volatilization analysis (SATVA).
M.S. Choudhary, K. Lederer
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Grafting of Hydroxyethyl Methacrylate onto Gelatin
Journal of Macromolecular Science: Part A - Chemistry, 1991Abstract Gelatin was graft copolymerized with poly (hydroxyethyl methacrylate) (HEMA) using potassium peroxydisulphate in aqueous medium. Effect of temperature, initiator, monomer and backbone concentrations were studied. The percent grafting was found to increase initially and then decrease in all the cases except with variation of backbone ...
M. Sivakumar +2 more
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Thermal behaviour of 2‐hydroxyethyl methacrylate ‐ methyl methacrylate‐ copolymers
Die Angewandte Makromolekulare Chemie, 1980AbstractCopolymerization of 2‐hydroxyethyl methacrylate (HEMA) with methyl methacrylate (MMA) was carried out in bulk in nitrogen atmosphere at 70°C using 0.2% benzoyl peroxide as initiator. Fractionation of the copolymers was done by precipitation method. The fractions were characterized by viscosity, NMR, IR and elemental analysis.
M. S. Choudhary, I. K. Varma
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Calcium Deposits on Glyceryl Methyl Methacrylate and Hydroxyethyl Methacrylate Contact Lenses
American journal of optometry and physiological optic, 1984ABSTRACT Five patients wore a hydroxyethyl methacrylate (HEMA) lens on one eye and a glyceryl methyl methylcrylate (GMA) lens on the other eye. The eye with the GMA lens remained comfortable longer than the other eye. The GMA lens is less likely to acquire calcium deposits and continues to be wearable longer than the HEMA lens.
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Sorption characteristics of hydroxyethyl methacrylate gels
Journal of Chromatography A, 1973Abstract The determination of the specific surface area by the thermal desorption method is described. New macroporous hydrophilic materials (Uniflex) based on hydroxyalkyl methacrylate copolymers were used as adsorbents. The heats of adsorption were determined from elution data at different temperatures and the reproducibility of the measurements ...
J. Volková +3 more
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Poly(2-hydroxyethyl methacrylate)
2009Abstract Major Applications Contact lenses, intraocular lenses, drug delivery systems, biomedical applications, chromatographic columns, hemodialysis membranes, flocculating agents. Properties of Special Interest Hydrophilicity. Good swelling in water and electrolytic solutions.
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Polymer, 1997
0Nuclear magnetic resonance (n.m.r.) imaging was used to study the ingress of water into poly(tetrahydrofurfuryl methacrylate-co-hydroxyethyl methacrylate). The study offers strong evidence that the diffusion is Fickian in nature. The diffusion coefficient, D, obtained by fitting the underlying diffusion profile, attainable from the images, according ...
Ghi, PY +3 more
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0Nuclear magnetic resonance (n.m.r.) imaging was used to study the ingress of water into poly(tetrahydrofurfuryl methacrylate-co-hydroxyethyl methacrylate). The study offers strong evidence that the diffusion is Fickian in nature. The diffusion coefficient, D, obtained by fitting the underlying diffusion profile, attainable from the images, according ...
Ghi, PY +3 more
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Polymerisation and degradation of 2-hydroxyethyl methacrylate and 2-ethoxyethyl methacrylate
2023The real time bulk polymerisation of 2-hydroxyethyl methacrylate (HEMA) and 2-ethoxyethyl methacrylate (EEMA) initiated with benzoyl peroxide has been studied over a range of initiator concentrations and polymerisation temperatures with the purpose of evaluating the kinetic rate parameters for polymerisation across the entire range of conversion ...
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Biomaterials, Artificial Cells and Artificial Organs, 1988
Erythrocytes were microencapsulated in a thermoplastic copolymer of poly-2-hydroxyethyl methacrylate (79% mole%) - co-methyl methacrylate (21 mole %) with little apparent initial cell lysis. Droplets of cell suspension and polymer solution were blown from the tip of a coaxial needle assembly into a receiving bath of hexadecane over phosphate buffered ...
W T, Stevenson +3 more
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Erythrocytes were microencapsulated in a thermoplastic copolymer of poly-2-hydroxyethyl methacrylate (79% mole%) - co-methyl methacrylate (21 mole %) with little apparent initial cell lysis. Droplets of cell suspension and polymer solution were blown from the tip of a coaxial needle assembly into a receiving bath of hexadecane over phosphate buffered ...
W T, Stevenson +3 more
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Journal of Applied Polymer Science, 1997
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 ...
Ivan Krakovský +2 more
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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 ...
Ivan Krakovský +2 more
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