Authors: Ashish A Kadam Thomas Karbowiak Andree Voilley JeanPierre Gay Frederic Debeaufort
Publish Date: 2015/12/09
Volume: 73, Issue: 7, Pages: 1841-1853
Abstract
The plasticizing effect of 4 model volatile compounds nhexane toluene pxylene and ethylbenzene able to be sorbed on polystyrene PS was studied A large weight fraction range was investigated up to 035 using differential scanning calorimetry Mathematical modeling using Fox KellyBueche Chow and GordonTaylor models was performed to model the behavior of the glass transition temperature of PS after VOC sorption A strong plasticization of PS was evidenced by a significant reduction in the glass transition temperature of the binary mixtures T gm Among the four studied molecules the linear one nhexane displayed a better plasticizing efficiency than the aromatic ones which lay in the same range Indeed a 15 w w−1 nhexane content in PS decreased the T gm by 84 K The GordonTaylor model was the best model to fit the experimental data for all the volatile organic compounds tested
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