Interdiffusion of deuterated and protonated poly(methyl methacrylate)
| Autor: | M.G.D. van der Grinten, T.E. Shearmur, Richard A. L. Jones, D.W. Drew, A.S. Clough |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Self-diffusion
Polymers and Plastics Chemistry Diffusion Organic Chemistry Thermodynamics Poly(methyl methacrylate) Viscoelasticity Condensed Matter::Soft Condensed Matter chemistry.chemical_compound Reptation Diffusion process Deuterium visual_art Polymer chemistry Materials Chemistry visual_art.visual_art_medium Methyl methacrylate |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/s0032-3861(97)00513-2 |
| Popis: | Nuclear Reaction Analysis is used to study the interdiffusion of deuterated and protonated poly(methyl methacrylate). The diffusion process is found to follow the fast theory predictions and self diffusion is seen to be governed by pure reptation with r.o evidence of constraint release. The diffusion coefficients scale with temperature according to the Williams-Landel-Ferry equation and are in good agreement with values calculated from viscoelastic parameters using the reptation theory; they are however, about fifty times smaller than other recently published values for similar molecular weights. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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