Small Angle X-ray Diffraction Scattering and Positron Annihilation Lifetime Spectroscopy

6 Small Angle X-ray Diffraction Scattering and Positron Annihilation Lifetime Spectroscopy 

The crystalline state of a polymeric material is the most efficient manner in which molecules can be packed into a dense state. However, polymers rarely exist as single crystals -defects and heterogeneities are almost always present. Such heterogeneities are inherent 

Ho and co-workers [62] used SAXS, among other techniques, to examine microphase separation and crystallisation in a melt-mixed blend of syndiotactic polystyrene (sPS) with a block copolymer of styrene and ethylene propylene. 

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