Positron annihilation lifetime spectroscopy (PALS) was used t o investigate the phase transitions, mainly the glass transition, of poly(ethy1ene terephthalate) (PET) and nylon-6 during the thermal treatment of these polymers. T h e longest-lived component lifetime and intensity, indicative of ortho-
Detection of the polymorphic transition at -86°C in cyclohexane by positron annihilation
✍ Scribed by A.M. Cooper; G. Deblonde; B.G. Hogg
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- English
- Weight
- 134 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0375-9601
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract Measurements of the peak height of the 2γ‐angular correlation curve were carried out during constant rate heating of Fe–Al alloys with an Al‐content between 6.3 and 28.3 at.%. The samples had been quenched form 1000°C into water at room temperature. Two recovery stages are observed. The
The quantum yields of the sulfur dioxide triplet ( 3S02)-sensitized phosphorescence of biacetyl (+18en8) were deteryined in experiments with NZ-SO2-Ac2 and c-Cd-Il2-SOrAc2 mixtures excited at 2875 A at 27'C. The fraction of the biacetyl triplets which reacts homogeneously by radiative or nonradiativ