Measuring the mutual diffusion coefficient for dodecyl acrylate in low molecular weight poly(dodecyl acrylate) with laser line deflection (Wiener's method) and the fluorescence of pyrene

Article Abstract:

Three molecular weights under 20,000 are studied to determine if poly (dodecyl acrylate) diffusion into dodecyl acrylate could be treated with Fick's law and if so to determine the values of the diffusion coefficients. The two methods for measuring the diffusion of dodecyl acrylate into poly (dodecyl acrylate) are compared and then Wiener's method is used in order to improve the method from published reports.

Fluorescence, Molecular weights, Acrylates

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Critical behavior and scaling relationships at the Sm[A.sub.d]-N and N-I transitions in nonyloxycyanobiphenyl (90CB)

Article Abstract:

A thermodynamic description of both the SmA-to-N and N-to-I phase transitions of the liquid crystal nonyloxycyanobiphenyl (90CB) compound through several physical magnitudes like dielectric, specific heat, and volumetric data are reported.

Electronic components, not elsewhere classified, Other Electronic Component Manufacturing, Liquid Crystals, Analysis, Transition state (Chemistry), Chemical thermodynamics

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