Results 291 to 300 of about 108,918 (350)
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Molecular Mobility in Poly(butyl methacrylate) and Poly(methyl methacrylate)
Molecular Simulation, 2004Molecular mobility is studied in poly(butyl methacrylate) and poly(methyl methacrylate) (PMMA) with molecular dynamics simulations in order to understand the effect of the α–β crossover on the β relaxation activation energy and co-operativity. In the high frequency range investigated, the estimated β process activation energy is decreased as compared ...
Sixou, Bruno, Menissez, Cécile
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Poly(methyl methacrylate) membranes
Journal of Applied Polymer Science, 1978AbstractUniform and symmetric membranes were formed from poly(methyl methacrylate) (PMMA) by making use of the stereocomplex phenomenon which characteristically occurs in the solution of a mixture of isotactic PMMA and syndiotactic PMMA. The water permeability of the membrane was very high compared to a commercially available cellulosic membrane ...
Yoshitada Sakai, Hiroshi Tanzawa
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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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Association of Stereoregular Poly(methyl methacrylates)
International Journal of Polymeric Materials, 1976Isotactic and syndiotactic poly(methyl methacrylate) (i-and s-PMMA) form stereocomplexes in suitable solvents.
CHALLA, G, DEBOER, A, TAN, YY
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Macromolecules, 1992
In view of recent observations of stereocomplexation processes in mixed monolayers of isotactic and syndiotactic poly(methyl methacrylate) (i-PMMA and s-PMMA) monolayers of mixtures of isotactic PMMA and syndiotactic poly(isobutyl methacrylate) (s-PiBMA) were studied in search of an alternative system exhibiting stereocomplexation at the air-water ...
Brinkhuis, R.H.G., Schouten, A.J.
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In view of recent observations of stereocomplexation processes in mixed monolayers of isotactic and syndiotactic poly(methyl methacrylate) (i-PMMA and s-PMMA) monolayers of mixtures of isotactic PMMA and syndiotactic poly(isobutyl methacrylate) (s-PiBMA) were studied in search of an alternative system exhibiting stereocomplexation at the air-water ...
Brinkhuis, R.H.G., Schouten, A.J.
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Polymer Bulletin, 2013
Thermo-oxidative stability of PMMA-grafted SiO2 and PMMA/PMMA-grafted SiO2 nanocomposites was investigated by conventional non-isothermal gravimetric technique. It was interesting to find that PMMA-grafted SiO2 nanoparticles exhibited higher thermo-oxidative stability than that of PMMA.
Deling Li +4 more
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Thermo-oxidative stability of PMMA-grafted SiO2 and PMMA/PMMA-grafted SiO2 nanocomposites was investigated by conventional non-isothermal gravimetric technique. It was interesting to find that PMMA-grafted SiO2 nanoparticles exhibited higher thermo-oxidative stability than that of PMMA.
Deling Li +4 more
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Photodegradation of blends of poly(methyl methacrylate) and poly(styrene-co-methyl methacrylate)
Polymer Degradation and Stability, 1992Abstract The photodegradation of blends of poly(methyl methacrylate) (PMMA) and poly(styrene-co-methyl methacrylate) (poly(St-co-MMA)) was studied using ultraviolet and Fourier-transform infrared (FTIR) spectroscopy and viscosity measurements. PMMA-poly(St-co-MMA) blends give macroscopically transparent films. The rate of formation of the oxygenated
Ayako Torikai +2 more
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Polymer, 2005
Abstract Polystyrene/polystyrene- block -poly(methyl methacrylate)/poly(methyl methacrylate) (PS/PS- b -PMMA/PMMA) composite particles were prepared by releasing toluene from PS/PS- b -PMMA/PMMA/toluene droplets dispersed in a sodium dodecyl sulfate aqueous solution.
Masayoshi Okubo +3 more
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Abstract Polystyrene/polystyrene- block -poly(methyl methacrylate)/poly(methyl methacrylate) (PS/PS- b -PMMA/PMMA) composite particles were prepared by releasing toluene from PS/PS- b -PMMA/PMMA/toluene droplets dispersed in a sodium dodecyl sulfate aqueous solution.
Masayoshi Okubo +3 more
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2009
Abstract Special Properties Optically clear (92% transmission, theoretical limit for normal incidence, in the visible region) through the visible wavelength range; very little ultra-violet absorption until 260 nm. Major Applications Replacement for glass. Good mechanical properties. Can be used in various biomedical applications.
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Abstract Special Properties Optically clear (92% transmission, theoretical limit for normal incidence, in the visible region) through the visible wavelength range; very little ultra-violet absorption until 260 nm. Major Applications Replacement for glass. Good mechanical properties. Can be used in various biomedical applications.
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Poly (ethyl methacrylate) by XPS
Surface Science Spectra, 1992XPS measurements for poly (ethyl methacrylate). The data include the valence band region and the principal core levels.
J. F. Moulder +2 more
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