| Autor: |
Kusanagi, Hiroshi, Chatani, Yozo, Tadokoro, Hiroyuki |
| Zdroj: |
Polymer Journal; October 1996, Vol. 28 Issue: 10 p916-921, 6p |
| Abstrakt: |
For isotactic poly(methyl methacrylate), molecular mechanics energy calculations were carried out on several double-stranded helix oligomer models for analyzing the energetical stability of the polymer double-stranded helix determined by X-ray analysis. The calculation results indicate that the double-stranded-helix structures can exist as stable double-stranded helices by the favorable intertwined interactions of the van der Waals interactions for the large oligomers (n=10; n is the number of monomers in the oligomer). Moreover, the calculated double-stranded helix structure by the energy minimization method is in good agreement with the observed structure by X-ray analysis. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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