期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 25, 期 15, 页码 1425-1428出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200400162
关键词
blends; morphology; poly(ether ketone)s; ring-banded spherulites; rhythmic growth
The ring-banded spherulites in liquid crystalline poly(aryl ether ketone) (LC-PAEK) and poly(aryl ether ether ketone) (PEEK) blends with a higher content (>50%) of LC-PAEK are investigated by polarizing light microscopy (PLM) and atomic force microscopy (AFM) techniques. The results indicate that the light core and rings of the ring-banded spherulites under PLM are mainly composed of an LC-PAEK phase, while the dark rings consist of coexisting phases of PEEK and a small amount of LC-PAEK. The formation of the ring-banded spherulites is attributable to structural discontinuity caused by a rhythmic radial growth.
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