ISSN:
0032-3888
Schlagwort(e):
Chemistry
;
Chemical Engineering
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Maschinenbau
,
Physik
Notizen:
The dynamic mechanical relaxation of macromolecules is found to be very sensitive to the presence of water which is strongly associated with the macromolecule. Polymers with the amide group exhibit a characteristic loss process (β or β2) in the region of 200K which is associated with the amide-water complex. Changes in the relaxation parameters with water content permit the stoichiometry of the interaction to be determined. Polymers with ionic groups on the side chain exhibit a higher temperature relaxation (β1) associated with side chain motion. This relaxation is also affected by the presence of water. Analysis of the effect of water on the loss parameters of the β2 and β1 processes has provided insight into the nature of the interaction of water with complex biological macromolecules.
Zusätzliches Material:
7 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/pen.760191012
