X-ray Scattering of Vinyl Polyolefin Liquids and Random Copolymers: Theory and Experiment
| العنوان: | X-ray Scattering of Vinyl Polyolefin Liquids and Random Copolymers: Theory and Experiment |
|---|---|
| المؤلفون: | David T. Wu, John G. Curro, Anton Habenschuss, Huimin Li |
| المصدر: | Macromolecules. 41:2694-2700 |
| بيانات النشر: | American Chemical Society (ACS), 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Materials science, Polymers and Plastics, Scattering, Organic Chemistry, Intermolecular force, Polymer, Polyethylene, Polyolefin, Inorganic Chemistry, chemistry.chemical_compound, Crystallography, chemistry, Tacticity, Polymer chemistry, Materials Chemistry, Side chain, Prism |
| الوصف: | Polymer reference interaction site model (PRISM) calculations and wide-angle X-ray experiments were performed on vinyl polyolefin melts of polyethylene (PE), isotactic polypropylene (iPP), and poly(1-butene) (P1B). PRISM calculations were also carried out on poly(1-hexene) (P1H). For PE and iPP melts a single main peak in the scattering pattern was observed near wave vectors k ∼ 1 A−1; for P1B and P1H we observed this main peak to split with the development of a prepeak that moves to lower wave vectors as the side chain size increased. By calculation of the various partial structure factors, we found that the prepeak formation is due to a combination of two effects: (1) an increase in the average distance between the chain backbones due to screening of the side chains and (2) increased intermolecular ordering of the pendant methyl groups as the side chains become longer. The scattering of random copolymers (PEP, PEB, PEH) of PE with iPP, P1B, and P1H, respectively, was also studied with PRISM theory as a ... |
| تدمد: | 1520-5835 0024-9297 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::494a02c0e7a21bf4f0e94109704a9738 https://doi.org/10.1021/ma702748v |
| رقم الأكسشن: | edsair.doi...........494a02c0e7a21bf4f0e94109704a9738 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 15205835 00249297 |
|---|