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Details for article 23 of 63 found articles
| Title: |
Investigation of the high-temperature phase transition of PHB/3-CI-PHB copolyester by means of deuteron NMR |
| Author: |
Thomsen, T. Zachmann, H. G. Kricheldorf, H. R. |
| Appeared in: |
Journal of macromolecular science. Part B, Physics |
| Paging: | Volume 30 (1991) nr. 1-2 pages 87-99 |
| Year: |
1991-03-01 |
| Contents: |
The change of molecular mobility during the phase transition of PHB/3-C1-PHB copolymer (5:1) from the orthorhombic modification II into an orthorhombic modification which is close to hexagonal chain packing was investigated by means of 2H-NMR. It is shown that a flipping of the benzene rings takes place at temperatures far below the transition temperature. The phase transition starts after more than 60% of the benzene rings are flipping. Even in the newly formed phase close to the hexagonal chain packing, at temperatures up to 300°C, free rotation of the benzene rings can be excluded. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 23 of 63 found articles
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