Abstract
The crystalline structures of a range of specially synthesized random copolyesters of poly(ethylene terephthalate) (PET) and poly(ethylene naphthalene-2,6-dicarboxylate) (PEN) have been studied. It is shown that this system has a crystallization and melting behaviour typical of random copolymers. Significant crystallinity can be induced in the copolymers of all compositions by hot drawing, even if the composition is in the 50/50 region. The results from wide angle X-ray scattering experiments indicate that in two-different composition ranges these copolymers show distinctly different crystal structures. The lattice parameters of each of these structures change smoothly with the composition, while the repeat along the chain direction within the crystal is aperiodic. These experimental facts will be discussed in relation to the possibility of co-crystallization of the two types of units.
| Original language | English |
|---|---|
| Pages (from-to) | 451-459 |
| Number of pages | 9 |
| Journal | Polymer |
| Volume | 36 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1995 |
| Externally published | Yes |
ASJC Scopus Subject Areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry
Keywords
- crystallization
- random copolymer
- X-ray diffraction