Results 11 to 20 of about 50 (50)
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Enzymatic synthesis of sorbitan methacrylate: Comparison of methacrylic acid and vinyl methacrylate
Biochemical Engineering Journal, 2006Abstract “Biomaterials” is a generic term which refers to a variety of medical material which is designed to be in direct contact with living tissue. Clearly, biomaterials must be carefully and microscopically fabricated for optimal acceptance within the living organism, in both functional and structural senses. In this study, the enzymatic synthesis
Gwi-Taek Jeong +6 more
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European Polymer Journal, 1979
Abstract The monomer reactivity ratios for radical copolymerizations of tributyltin methacrylate (monomer-1) with methyl methacrylate, propyl methacrylate and butyl methacrylate have been found as r 1 = 0.79 and r 2 = 1.0, r 1 = 0.58 and r 2 = 0.9, and r 1 = 0.65 and r 2 = 0.68 respectively.
N.E. Ikaldious +3 more
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Abstract The monomer reactivity ratios for radical copolymerizations of tributyltin methacrylate (monomer-1) with methyl methacrylate, propyl methacrylate and butyl methacrylate have been found as r 1 = 0.79 and r 2 = 1.0, r 1 = 0.58 and r 2 = 0.9, and r 1 = 0.65 and r 2 = 0.68 respectively.
N.E. Ikaldious +3 more
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Journal of Biomedical Materials Research, 1997
Five binary formulations were prepared from methyl methacrylate (MMA) and methacrylic acid (MAA) monomers, and six ternary formulations were prepared from polysols of 30% wt polymethyl methacrylate (PMMA)/MMA and MAA. Using thermal analyses (DSC and TGA) the polymerization kinetics, condition of postcuring, relative amount of residual monomers, and ...
R. P. Kusy, T. Chen
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Five binary formulations were prepared from methyl methacrylate (MMA) and methacrylic acid (MAA) monomers, and six ternary formulations were prepared from polysols of 30% wt polymethyl methacrylate (PMMA)/MMA and MAA. Using thermal analyses (DSC and TGA) the polymerization kinetics, condition of postcuring, relative amount of residual monomers, and ...
R. P. Kusy, T. Chen
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Journal of Biomaterials Science, Polymer Edition, 1998
Terpolymers composed of methyl methacrylate (MMA), polydimethylsiloxane methacrylate (PDMSMA), and methoxypolyethyleneglycol methacrylate (MPEGMA), having different compositions were synthesized. Platelets were not adsorbed onto terpolymer surfaces composed of 50 wt% MMA, 25 wt% PDMSMA and 25 wt% MPEGMA, while on terpolymers with the other compositions,
S. Takahashi +5 more
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Terpolymers composed of methyl methacrylate (MMA), polydimethylsiloxane methacrylate (PDMSMA), and methoxypolyethyleneglycol methacrylate (MPEGMA), having different compositions were synthesized. Platelets were not adsorbed onto terpolymer surfaces composed of 50 wt% MMA, 25 wt% PDMSMA and 25 wt% MPEGMA, while on terpolymers with the other compositions,
S. Takahashi +5 more
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Polymer Bulletin, 1990
Poly(n-propyl methacrylate) is known to be immiscible with poly(methyl methacrylate) (PMMA). However, we have found that poly(methoxymethyl methacrylate) is miscible with PMMA, indicating the importance of ether oxygen atoms in achieving miscibility. On the other hand, poly(methylthiomethyl methacrylate) is immiscible with PMMA.
Goh, S.H., Lee, S.Y.
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Poly(n-propyl methacrylate) is known to be immiscible with poly(methyl methacrylate) (PMMA). However, we have found that poly(methoxymethyl methacrylate) is miscible with PMMA, indicating the importance of ether oxygen atoms in achieving miscibility. On the other hand, poly(methylthiomethyl methacrylate) is immiscible with PMMA.
Goh, S.H., Lee, S.Y.
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Microstructure of copolymers of methyl methacrylate with ethyl methacrylate
European Polymer Journal, 1988Abstract The reactivity ratios for the copolymerization of methyl and ethyl methacrylates were calculated by the method of Kelen and Tudos. The triad sequence distributions were then determined by means of a computer program due to Harwood. The calculated distributions agree well with those found by 13 C- 1 H-NMR spectroscopy.
G.S. Kapur, Ajaib Singh Brar, S.K. Dubey
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Development of reactive methacrylates based on glycidyl methacrylate
Journal of Polymer Science Part A: Polymer Chemistry, 2010AbstractSix methacrylate monomers have been synthesized for use as reactive diluents in dental composites and evaluated to investigate the relationship between molecular structure and monomer reactivity. Four were synthesized by reactions of glycidyl methacrylate (GMA) with various acids, 2‐(2‐methoxyethoxy)acetic acid (1), 2‐(2‐(2‐methoxyethoxy)ethoxy)
Duygu Avci +4 more
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Isocyanato Urethane Methacrylates Derived from Hydroxyethyl Methacrylate
Journal of Dental Research, 1980Isocyanato urethane methacrylates were synthesized from five diisocyanates and hydroxyethyl methacrylate. They may be homopolymerized or copolymerized with other methacrylates by the usual free radical methods of initiation and have potential as adhesion-promoting agents for dentin.
Gerhard M. Brauer +2 more
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Upcycling polymethyl methacrylate to methacrylic acid
Reaction Chemistry & EngineeringUpcycling PMMA to methacrylic acid rather than methyl methacrylate is a viable economic alternative to treat end-of-life plastic.
Yanfa Zhuang +7 more
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Stereoregular Copolymers of Methacrylic Acid and of Methyl Methacrylate
Journal of Macromolecular Science: Part A - Chemistry, 1971Abstract Different techniques and mechanisms of hydrolysis of isotactic, syndiotactic, and atactic PMMA are compared for over-all rates and reaction yields. A combined hydrolysis using a mixture of hydriodic and acetic acid gave the best results, and included the conservation of tacticity and size of the acid-ester copolymers obtained.
Eric Selegny, Philippe Segain
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