ISSN:
0021-8995
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Maschinenbau
,
Physik
Notizen:
The effect of pigments on the vapor sorption characteristics of a noncrosslinked polymer [poly(vinylacetate)] and a highly crosslinked polymer (epoxy type) were investigated. The fillers used in this study were a polar surface (titanium dioxide) and a nonpolar surface (copper phthalocyanine blue). With both polar and nonpolar fillers, a marked decrease in the sorption of organic vapors was noted at low relative pressures, even with very low filler content. At high vapor pressures, the sorption isotherm of the filled polymer approaches that of the unfilled polymer. It was also noted that the shape of the sorption isotherm of the filled polymer closely resembles that of the pure polymer below its glass transition temperature. The experimental results are discussed in terms of the partial immobilization of the polymer segments in the presence of fillers, as a result of the reduced number of possible configurations of the polymer chains.
Zusätzliches Material:
4 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/app.1964.070080337
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