Property-structure relationships in partially sulphonated poly(ethylene terephthalate)—I. Infrared studies
✍ Scribed by Barbara Ostrowska-Gumkowska; Jadwiga Ostrowska-Czubenko
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 426 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0014-3057
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Far-infrared spectra of alkali metal salts of sulphonated poly(ethylene terephthalate) have been measured in the 575-75 cm ~ region. For each polymeric salt, an intense and broad absorption band, the frequency of which is cation mass dependent, has been observed and assigned to cation-motion in the
Stress-relaxation studies between room temperature and 140°C were made on oriented multifilament poly(ethy1ene terephthalate) (PET) yarn and on four other samples which had been prepared by heat-setting this yarn at 180 and 230°C while free to relax and when held taut at constant length. Using the t