The physical aging of bisphenol A polycarbonate was studied using the differential scanning calorimetry technique. Cowie and Ferguson's model and Williams-Watts function were used to analyze the data. It is confirmed that the relation ⌬H ϱ (T a ) ϭ ⌬C p (T g Ϫ T a ), where ⌬H ϱ (T a ) is the value o
Effects of physical aging and carbon dioxide absorption in bisphenol-A polycarbonate
✍ Scribed by Brian G. Risch; Garth L. Wilkes
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 530 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0021-8995
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📜 SIMILAR VOLUMES
It has recently been demonstrated that hot-drawn samples of bisphenol A polycarbonate (PC) have a 50% higher volume relaxation rate than their isotropic counterpart even though the oriented samples have a lower initial free volume (i.e., higher density). 1 In an attempt to better understand this par
CHzClCHzCl and CHCla, in which bisphenol A polycarbonate is normally readily soluble, were sorbed into the polymer from the liquid phase a t 24-25°C. Sorption behavior was studied over a range of solvent activities (ambient concentrations), and the effects of repeated sorptions were observed. Penetr
## Abstract The solubility of a relatively noninteracting gas (CH~4~) was measured and compared for samples of vastly different thicknesses (25.4 vs 0.1 μm) to investigate the possibility of thickness‐dependent sorption and physical aging in glassy polymers. Changes in the sorption due to physical