Preparation of HPEEK by Oligomer A2+B3 Approach |
| |
| Authors: | Jianxin Mu Guibin Wang Chunling Zhang Xiujie Li V V Kireev |
| |
| Institution: | 1. Alan G. MacDiarmid Lab , College of Chemistry, Jilin University , Changchun, P. R. China;2. D. Mendeleyev University of Chemical Technology of Russia , Moscow;3. Alan G. MacDiarmid Lab , College of Chemistry, Jilin University , Changchun, P. R. China;4. College of Materials Science and Engineering, Jilin University , Changchun, P. R. China;5. D. Mendeleyev University of Chemical Technology of Russia , Moscow |
| |
| Abstract: | A series of hyperbranched poly(ether ether ketones) with different chain length between branching point (L) were prepared using a A2+B3 methodology, in which the A2 is hydroxyl‐terminated PEEK oligomer. The L affects the properties of the polymers such as the inherent viscosity, the degree of crystallinity, the thermal properties of the polymers etc. The polymer with a L2≈8 had T g (122.4°C), T c (200.2°C), and broad T m (247.4°C). With the increment of L, up to the point L2≈20 and L2≈35, the polymers become semi‐crystalline, with a melting point of 300.9°C and 317.9°C, respectively. Their wide angle X‐ray scattering (WAXS) pattern indicated that their crystal structure is exactly the same as that of the linear homopolymer. |
| |
| Keywords: | hyperbranched poly(ether ether ketone) chain length between branching point A2+B3 approach |
|
|
