From: Walt Stafford <STAFFORD@BBRI.ERI.HARVARD.EDU>
  To  : rasmb@BBRI.ERI.HARVARD.EDU
  Date: Wed, 8 Feb 1995 23:08:17 -0500 (EST)

non aqueous sed'n

From:	SMTP%"SEH3@phx.cam.ac.uk"  8-FEB-1995 06:02:09.80
To:	STAFFORD
CC:	
Subj:	Re: [Non Aqueous Sed Eqil.]


We've some experience with a polyisoprene/polyoxyethylene copolymer.
In water it forms micelles, in chloroform it stays as unimers.  For
the chloroform experiments we used Kel-F Beckman cells in a Model E
(equilibrium) and an MSE MkII (velocity).  NB. Chloroform was quite
interesting for us, since, because its density>density copolymer, we
had (low speed) flotation equilibrium and flotation velocity respectively.
Refs: J.Phys.Chem. (1990), 94, 978 and Macromolecules (1990) 23, 4461

Steve Harding