| 초록 |
Polyarylates (PARs), aromatic polyesters exhibiting liquid crystallinity in a molten state, are used in variety of industrial sectors because of their excellent thermal, mechanical and chemical properties. Although PARs have outstanding elastic modulus and tensile stress, they have relatively poor impact strength. To overcome these limitations, we fabricated PAR blends by mixing with glycidyl methacrylate-grafted polyethylene (EGMA) and characterized their morphology, thermal and mechanical properties. The FT-IR spectra revealed that the carbonyl bands of PAR shifted by reaction with EGMA. In addition, the rheometric results showed an increase in the viscosity of the PAR blends with the addition of EGMA due to the reactions between the glycidyl groups of EGMA and the carboxyl/hydroxyl groups of PAR. The influence of EGMA on the morphology and thermo-mechanical properties of PAR blends was discussed in terms of the EGMA content and the reactivity between EGMA and PAR. |
