Physical ageing in glassy polymers. An i.r. spectroscopic investigation of poly(ethylene terephthalate)
β Scribed by Ahmad Aref-Azar; James N. Hay
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 310 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0032-3861
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Inβsitu FTIR studies on the conformational changes of poly(ethylene terephthalate) (PET) films with different thermal histories, i. e., quenched from the melt and subβ__T__~g~ annealed at different temperatures, were carried out while increasing the temperature through the glass transit
The attenuated total reflection (ATR) technique has been used to obtain infrared spectra of heat-set poly(ethy1ene terephthalate) ( P E T ) fibers. The trans and gauche content have been estimated from the ahsorhances of the trans hand at 1342 cm-', the gauche hand a t 1370 cm-', and the internal st