Abstract
The isothermal transition kinetics and crystallization mechanisms of liquid crystal polymer: VectraTM A-950 (73/27 HBA/HNA) was studied by using a differential scanning calorimeter (DSC). Two types of transition processes appeared in the low temperature region (below 503 K). One is a fast process that can be regarded as liquid crystal transition, and the other is a slow process, which perfects crystals. A slight difference in monomer compositions also leads to a few surprising results compared to S.Z.D. Cheng's study. 73/27 HBA/HNA may have a faster annealing process (in the time scale we studied) and its post-treatment process may be accomplished more economically than that of 75/25 HBA/HNA. The reason lies in that the former may has a better sequence or a better matching of molecular dimensions for crystallization than that of latter.
| Original language | English (US) |
|---|---|
| Pages | 2017-2019 |
| Number of pages | 3 |
| State | Published - 1998 |
| Externally published | Yes |
| Event | Proceedings of the 1998 56th Annual Technical Conference, ANTEC. Part 1 (of 3) - Atlanta, GA, USA Duration: Apr 26 1998 → Apr 30 1998 |
Other
| Other | Proceedings of the 1998 56th Annual Technical Conference, ANTEC. Part 1 (of 3) |
|---|---|
| City | Atlanta, GA, USA |
| Period | 04/26/98 → 04/30/98 |
ASJC Scopus subject areas
- General Chemical Engineering
- Polymers and Plastics