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The diffusion and solubility of Irganox 1098 in polyamide 6 |
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| Authors: | Weifu Dong Pieter Gijsman |
| Institution: | a Laboratory of Polymer Technology, Department of Chemical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands b Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands c DSM Ahead, P.O. Box 18, 6160 MD Geleen, The Netherlands d School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, China |
| Abstract: | Diffusion coefficients (D) and solubilities (S) of a phenolic antioxidant (Irganox® 1098) in polyamide 6 were determined in the temperature range of 139-180 °C. D and S show Arrhenius and van’t Hoff dependences on temperature respectively, with discontinuities at the melting temperature of the antioxidant. The activation energies for diffusion and enthalpies of solution are lower above than below the melting temperature. Based on the determined parameters for diffusion and solubility, the blooming of Irganox® 1098 as a function of temperature and time was calculated. |
| Keywords: | Diffusion Solubility Blooming van&rsquo t Hoff plot Arrhenius plot |
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