Effect of penetrant-induced isothermal glass transition on sorption, dilation, and diffusion behavior of polybenzylmethacrylate/CO2
✍ Scribed by Jin-Sheng Wang; Yasutoshi Naito; Yoshinori Kamiya
- Book ID
- 102658576
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 529 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0887-6266
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✦ Synopsis
The effect of a penetrant-induced isothermal glass transition on sorption, dilation, and diffusion behavior was studied in a single experimental run for CO, in cast polybenzylmethacrylate films. The dual-mode type sorption isotherms below the glass transition temperature of the polymer changed to linear ones above a certain concentration. Meanwhile, partial molar volume of CO, determined from the dilation of the films above the concentration gave a value very close to the one reported for rubbery polymers, and diffusion coefficients became less concentration-dependent. The results were conformable to the concept of unrelaxed volume in glassy polymers.