Accession Number : AD0688473

Title :   SURFACE AND INTERFACIAL STUDIES OF ICE AND INTERACTION OF WATER AND POLYMERIC MATERIALS AT TEMPERATURES BELOW 0C. (ADSORPTION OF WATER VAPOR ON POLYMERS AND FREEZING OF AQUEOUS POLYMER SOLUTIONS WITH REFERENCE TO CRYOBIOLOGY).

Descriptive Note : Final rept. Mar 66-Jul 68,

Corporate Author : CLARKSON COLL OF TECHNOLOGY POTSDAM N Y

Personal Author(s) : Jellinek,H. H. G. ; Fok,S. Y. ; Nagarajan,V. ; Clerc,P. J.

Report Date : 15 MAR 1969

Pagination or Media Count : 9

Abstract : A study was initiated on freezing of Polyvinylpyrrolidone aqueous solutions as a function of polymer concentration and temperature. This resulted in a publication entitled: 'Freezing of Aqueous Polyvinylpyrrolidone Solutions.' Degradation of aqueous polyvinylpyrrolidone by freezing was investigated: 'Degradation of Polymers in Solution by Freezing.' Also adsorption isotherms of water/polymer systems were studied: Isosteric heats and entropies of adsorption were evaluated: 'Sorbed Water on Polymers Near 0C.' Research with the object of clarifying the mechanism of protection of blood cells by freezing in presence of polyvinylpyrrolidone were also carried out (see previous reports). (Author)

Descriptors :   (*POLYMERS, FREEZING), (*BLOOD CELLS, FREEZING), SOLUTIONS(MIXTURES), WATER, VINYL PLASTICS, PYRROLES, DEGRADATION, NITROGEN HETEROCYCLIC COMPOUNDS

Subject Categories : Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE