ISSN:
0098-1273
Schlagwort(e):
Physics
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
Specific heats of a series of plasticized and unplasticized poly(vinyl chloride) compositions have been determined by a differential scanning calorimeter over the temperature range 200-400°K. The glass temperatures were higher and the specific heat values at 300°K lower with phthalate esters then with esters of aliphatic acids; those values were also higher and lower, respectively, with benzyl-containing esters than with the methyl or octyl esters. The data were treated by a computer technique and plotted. A mathematical expression was developed which would describe the curves obtained when specific heat was plotted against temperature, and provided values in each case for the glass temperature and the specific heat at the glass temperature and at 300°K, as well as other descriptive parameters.
Zusätzliches Material:
3 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/pol.1972.180101109
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