My Account: Log In | Join | Renew
Search
Author
Title
Vol.
Issue
Year
1st Page

Abstract

 

This article in SSSAJ

  1. Vol. 34 No. 2, p. 358-360
     
    Received: Oct 20, 1969
    Published: Mar, 1970


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2136/sssaj1970.03615995003400020051x

Molecular Weight of Montmorillonite from Optical Transmission Measurements1

  1. N. Lahav2 and
  2. A. Banin3

Abstract

Abstract

The weight average molecular weight of small Na-montmorillonite particles in aqueous suspension have been determined by means of optical density (OD) measurements. In the wavelength range of λ = 4000A to 6000A and in dilute clay suspension which obeys Beer-Lambert Law, the slope of the straight line of log (OD) vs. log λ is proportional to the major dimension of the particles. Assuming a disc geometry and the number of unit layers in a clay particle, and working with suspension with a slope near −4, the weight average molecular weight was found by using light scattering theory. The results agree reasonably with other data from the literature.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © . Soil Science Society of America