Characterization of thermotropic liquid crystalline polyester/polysulfone blends
| Autor: | Moshe Narkis, A. Golovoy, M. Kozlowski |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Scanning electron microscope technology industry and agriculture General Chemistry Polymer Thermotropic crystal Polyester chemistry.chemical_compound chemistry Liquid crystal Phase (matter) Ultimate tensile strength Materials Chemistry Polysulfone Composite material |
| Zdroj: | Polymer Engineering and Science. 32:854-860 |
| ISSN: | 1548-2634 0032-3888 |
| DOI: | 10.1002/pen.760321304 |
| Popis: | The morphology, rheology, and mechanical properties of blends of polysulfone (PSF) with up to 65% of a wholly aromatic liquid crystalline polymer (LCP) were investigated. In injection molded specimens a skin-core morphology was observed with the LCP minor phase oriented in the skin and globular in the core. Scanning electron microscopy of fractured surfaces showed sharp phase boundaries, suggesting low interfacial adhesion. The neat PSF and blends with low amounts of LCP exhibited a low shear Newtonian plateau not observed in the blends with high LCP levels. The addition of LCP to PSF resulted in an increase in stiffness, a small increase in tensile strength, and a significant improvement in processability. |
| Databáze: | OpenAIRE |
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