The structure of bicomponent fibers with a core-sheath structure can reflect the mutual influence of the components on their thermal profile along the spinline, leading to modified crystallization compared to monocomponent melt-spinning. This could be shown when examining the semicrystalline structure of homo- and heterobicomponent core-sheath fibers melt-spun from poly(ethylene terephthalate) (PET) and poly(phenylene sulfide) (PPS).
We found that the heterobicomponent arrangement can promote the formation of equally spaced and uniformly sized crystallites in the PET phase and highly oriented crystallites in the PPS phase.
BRUKER NanoStar - Structure analysis for nano-materials (SAXS & WAXS)
- Textured materials: ordering, molecular arrangements
- Nano-particle size distributions (<100nm) and shape determination
- Ordering parameters for nano systems
- Transmission scans: samples in capillaries and flat sample holders (with X-ray transparent windows)
- Mechanical forces can be applied to the samples
With the BRUKER NanoStar, powders, thin bulk materials can be analyzed. Colleagues from Empa with frequent demands can get access to the instrument after training and may use it by reservation through an online system. However, the staff of the lab will give support in setting up an optimized experiment.