Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Jonathan Masere"'
Publikováno v:
Langmuir. 23:5522-5531
We studied drops of dodecyl acrylate in poly(dodecyl acrylate) (molecular weight of 25,000) in a spinning drop tensiometer to determine whether an effective interfacial tension (EIT) existed between these two miscible fluids. We found convincing evid
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 39:1075-1080
Frontal polymerization is a process in which a localized reaction zone propagates through a monomer reactant mixture, leaving a polymer product in its wake, and is the result of the coupling of the thermal transport and Arrhenius dependence of the ex
Publikováno v:
Journal of Applied Polymer Science. 80:686-691
Using a newly developed low-temperature frontal polymerization technique, poly(methyl methacrylate) (PMMA) matrices were prepared with nonuniform distributions of organic nonlinear optical dyes, with potential use as optical limiters. This technique
Publikováno v:
Chaos: An Interdisciplinary Journal of Nonlinear Science. 9:315-322
Front dynamics in the frontal polymerization of two multifunctional acrylate monomers, 1,6-hexanediol diacrylate (HDDA) and trimethylolpropane ethoxylate triacrylate (TMPTA), with Lupersol 231 [1,1-di(t-butylperoxy)-3,3,5-trimethylcyclohexane] as the
Autor:
John A. Pojman, Jonathan Masere
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 94:919-922
A novel method of monitoring frontal polymerization propagation has been presented. Using commercially available dyes that change color upon coupling with free radicals, the propagating fronts of free radical polymerization reactions can be visualize
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 94:53-57
The behaviour of a system comprising two competitive autocatalytic processes, A+B→2B, rate=k1āand A+C→2C, rate=k2ā, where ā, and represent the concentrations of the various species, is considered. In a well-stirred batch reactor, the final equ
Publikováno v:
The Journal of Physical Chemistry. 98:6505-6508
Observations of steady nonaxisymmetric chemical wave fronts are reported for upward propagation in iodate- arsenous acid solutions within vertical capillary tubes. These observations confirm a recent prediction of hydrodynamic stability theory that t
Publikováno v:
Nature. 361:240-243
DETERMINISTIC chaos is characterized by long-term unpredictability arising from an extreme sensitivity to initial conditions. Such behaviour may be undesirable, particularly for processes dependent on temporal regulation. On the other hand, a chaotic
Autor:
Morningstar Manyonda, Jonathan Masere, Reuben H. Simoyi, Sithembile Dube, Charles Muzimbaranda
Publikováno v:
International Journal of Chemical Kinetics. 23:419-429
The oxidation of thiourea by chlorite within the pH range of 2 to 5.5 has been found to produce a single wave of chlorine dioxide in unstirred solutions. The wave has been studied in narrow tubes of varying diameters and in petri dishes. The wave app
Autor:
Ben de Lacy Costello, Christopher Stone, Rita Toth, Andrew Adamatzky, Jonathan Masere, Larry Bull
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 79(3 Pt 2)
Spontaneous spiral formation occurs when an excitation wave is input to a heterogeneous network of low- and high-light-intensity cells projected onto a light-sensitive Belousov-Zhabotinsky reaction. The range of network conditions where spirals form