Home List of Titles ESC resistance of commercial grade polycarbonates during exposure to butter and related chemicals
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/198519
- ESC resistance of commercial grade polycarbonates during exposure to butter and related chemicals
- Kjellander, Carina K.; Nielsen, Tenna B.; Ghanbari-Siahkali, Afshin; Kingshott, Peter; Hansen, Charles M.; Almdal, Kristoffer
- Three commercial grades of polycarbonates (Lexan® 144, Lexan® 104 and Makrolon Rx1805) were studied with respect to resistance to environmental stress cracking (ESC) when exposed to butter and related chemicals. The polycarbonates (PCs) were extensively characterised to determine whether differences in ESC resistance could be related to their structural or chemical properties. MALDI-TOF mass spectrometry revealed that Makrolon Rx1805 contains a low molar mass material characterised as poly(propylene glycol)p, which was confirmed by ATR-FTIR and 1H NMR. Some "non-absorbing" chemicals, such as butter, cause the PCs to be less resistant to ESC under stress. The reason for this is that these chemicals and the PCs have sufficiently similar Hansen solubility parameters to allow surface conformational changes even though absorption is non-existent or extremely small. ATR-FTIR was used to detect changes in molecular structure in the PC surfaces.
- Publication type
- Journal article
- Polymer Degradation and Stability, Vol. 93, no. 8 (Aug 2008), pp. 1486-1495
- Publication year
- FOR Code(s)
- 0303 Macromolecular and Materials Chemistry; 0904 Chemical Engineering
- Carbonates; Commercial grades; ESC; Food processing; FTIR; Hansen solubility parameters; Health; Lipid resistant; MALDI-TOF; Polycarbonates; Thermoplastics
- Publisher URL
- Copyright © 2008 Elsevier Ltd. All rights reserved.
- Peer reviewed