Crystallinity of ethylene oxide oligomers
| Autor: | Richard H. Mobbs, Hoon Hong Teo, A. Marshall, R. C. Domszy, Colin Booth |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
Materials science
Polymers and Plastics Ethylene oxide Scattering Organic Chemistry General Physics and Astronomy symbols.namesake Crystallography chemistry.chemical_compound Crystallinity Lamella (surface anatomy) Differential scanning calorimetry chemistry Polymer chemistry Materials Chemistry symbols Crystal habit Spectroscopy Raman scattering |
| Zdroj: | European Polymer Journal. 17:885-893 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/0014-3057(81)90194-4 |
| Popis: | Nonaethylene glycol and pentadecaethylene glycol and their dimethyl ethers have been prepared and characterized, with respect to crystallinity by wide- and small-angle X-ray scattering, Raman scattering, i.r. spectroscopy and differential scanning calorimetry. Wide-angle X-ray scattering is similar to that from high molecular weight poly(ethylene oxide). The crystal habit is lamella. The lamellae are highly crystalline and the surface layers are ordered. Comparison with crystalline poly(ethylene oxide) prepared conventionally, and having a distribution of chain lengths, shows that such samples crystallize into lamellae with disordered surface layers. |
| Databáze: | OpenAIRE |
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