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| Titel: |
Studies of Deformed Poly(Methyl Methacrylate) Using Positron Annihilation Lifetime Spectroscopy |
| Auteur: |
Kevdina, I. B. Arzhakov, M. S. Shantarovich, V. P. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 39 (1998) nr. 3-4 pagina's 313-318 |
| Jaar: |
1998-02-01 |
| Inhoud: |
Structural rearrangements in glassy PMMA on polymer plastic deformation and recovery of residual plastic deformation in glassy state were studied by positron annihilation lifetime spectroscopy. Uniaxial compression was shown to be accompanied by a decrease in concentration of free volume microregions in disordered polymer regions, which were characterized by low packing density. Recovery of residual deformation at elevated temperatures but below glass transition point Tg proceeds without any noticeable changes in fractional content of free volume both in disordered and ordered polymer regions. The advantages of positron annihilation lifetime spectroscopy for studying microstructure and structural rearrangements in polymers were discussed. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 12 gevonden artikelen
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