Determination of diffusion coefficient

Measuring and testing – Instrument mechanism or transmission – Rate of change

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

73 1902, 73 3107, G01N 1500, G01N 1300

Patent

active

056273290

ABSTRACT:
Disclosed is a method of determining a diffusion coefficient for a diffusant in a particulate. An inert gas is passed through a particulate containing the diffusant. A parameter that is proportional to the concentration of the diffusant in the inert gas is measured over a period of time and the slope of the linear portion of that relationship is determined and is multiplied by a constant.

REFERENCES:
patent: 3926561 (1975-12-01), Lucero
patent: 4944180 (1990-07-01), Tou et al.
patent: 5157960 (1992-10-01), Brehm et al.
patent: 5361625 (1994-11-01), Ylvisaker
Abstract: Article by D. Bobok et al. in Chem. Pap. 46(6), 363-7, 1992.
Article: "The Use of A Gas Chromatographic Technique For The Study of Diffusion In Polymers," by PJT Tait et al., Journal of Chromatographic Science, vol. 17, pp. 219-223 (Apr. 1979).
Article: "Size Effects On Solvent Diffusion In Polymers," by D Arnould et al., Ind. Eng. Res., 31, pp. 218-228, (1992).
Article: "Diffusion of Organic Vapors At Low Concentrations In Glassy PVC, Polystyrene, and PMMA," by AR Berens et al., Journal of Membrane Science, 10, pp. 283-303 (1982).
Article: "Diffusion and Relaxation In Glassy Polymer Powders: 1. Fickian Diffusion of Vinyl Chloride In Poly(Vinyl Chloride)," AR Berens, Polymer, vol. 18, pp. 697-704, (Jul. 1977).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Determination of diffusion coefficient does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Determination of diffusion coefficient, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determination of diffusion coefficient will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2134026

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.