Melt blends of polyethylene with a phenoxy
โ Scribed by Chi Hoon Choi; Byung Kyu Kim
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 319 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0014-3057
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โฆ Synopsis
Melt blends of high density polyethylene (PE) with a phenoxy have been prepared over a full composition range using a Brabender Plasticorder. Scanning electron microscopy @EM) micrographs showed a clear phase separation, viz. particle-in-matrix or co-continuous morphology depending on the composition. T,,, (crystalline melting temperature) of PE decreased by 3-6"C, whereas TF (glass transition temperature) of phenoxy increased up to ca 11ยฐC in the blends. Mechanical propertIes of the blends showed a negative deviation from linear additivity due to large phase separation (-several pm) and poor interfacial adhesion.
๐ SIMILAR VOLUMES
Polypropylene (PP) blends with a phenoxy have been prepared in various compositions using a Brabender Plasticorder. Scanning electron microscopy (SEM) micrographs showed a clean two-phase morphology. The domains were larger when PP formed the dispersed phase, probably due to the greater melt viscosi
Investigations have been made on the melt rheological behaviors of compatibilized blends composed of polystyrene, low density polyethylene and hydrogenated (styrene-butadiene-styrene) triblock copolymer used as a compatibilizer. The experiments were carried out on a capillary rheometer. The effects