[RASMB] swelling polymers

[Walter Stafford]

Hi Tony,

	Walter Borchard is the guy to consult. He used to be at Osnabruck.

Hope all is well,.
Walter


Walter F. Stafford
Senior Scientist
Boston Biomedical Research Institute
64 Grove Street
Watertown, MA 02472
617-658-7808
stafford at bbri.org




On Feb 11, 2008, at 01:51, Aerts Tony wrote:

> Dear all,
>
>
>
> A private company ask me the following question:
>
> They have a polymer which is crosslinked poly(acrylic) acid . This  
> polymer is used for preparing gels for medical purposes. The degree  
> of swelling in water is important for them.  They now ask me to  
> determine the degree of swelling by analytical ultracentrifugation.  
> Is this possible? They refer to an article of Dr. H. Lange in  
> Colloid and Polymer science 264,488-493 ( 1986) : Determination of  
> the degree of swelling and crosslinking of extremely small polymer  
> gel quantities by analytical ultracentrifugation. This is done with  
> a Beckmann model E.  It seems also a very complicated experiment.  
> Is there not a more easier way to do this with the XLA?
>
> Any help or suggestion is welcome.
>
> Thanks in advance,
>
>
>
> Best regards,
>
>
>
>
>
>
>
> Aerts Tony
>
> University of Antwerp
>
> Campus Drie Eiken Building T5.31
>
> Department of Biomedical Sciences
>
> Laboratory of Neurochemistry & Behaviour
>
> Universiteitsplein 1
>
> 2610 Wilrijk
>
> email : tony.aerts at ua.ac.be
>
> Phone : 00 32 (0) 8202605
>
> Fax: 00 32 (0)3 8202618
>
>
>
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