Masters Theses


Rajesh Shah


“A small drop of toluene (2-10 ml) was deposited on a glass slide and covered with a micellar solution of sodium dodecyl sulfate (SDS). Due to solubilization the drop eventually vanished, and the rate of change of the basal radius of the drop and its contact angle were measured as functions of time.

It is seen that the mass transfer resistance is mainly an "interfacial resistance" which remains a constant through time. Although the rates as such increase with increasing surfactant concentrations, they eventually reach a constant value. Model suggests the actual rate constant decreases inversely with the surfactant concentrations. It will also be shown that fluid mechanics plays an important role and the "rollback" mechanism takes an unconventional route here.

Other systems show more complex features. There appear to be two stages, interfacial resistance control passing into diffusion control. However, there is a cusp separating the two that is not easily explained”--Abstract, page iii.


Neogi, P. (Partho), 1951-

Committee Member(s)

Forciniti, Daniel
Ybarra, Robert M.
Le, Vy Khoi


Chemical and Biochemical Engineering

Degree Name

M.S. in Chemical Engineering


University of Missouri--Rolla

Publication Date

Spring 2002


vii, 35 pages

Note about bibliography

Includes bibliographical references (pages 33-34).


© 2002 Rajesh Shah, All rights reserved.

Document Type

Thesis - Restricted Access

File Type




Subject Headings

Surface active agents -- Testing

Thesis Number

T 8047

Print OCLC #


Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

Share My Thesis If you are the author of this work and would like to grant permission to make it openly accessible to all, please click the button above.