Structure investigations of PP-PA blends

Jaroslaw Janicki; Andrzej Wlochowicz; Czeslaw Slusarczyk

doi:10.1117/12.267201

18 February 1997 Structure investigations of PP-PA blends

Jaroslaw Janicki, Andrzej Wlochowicz, Czeslaw Slusarczyk

Proceedings Volume 3095, X-Ray Investigations of Polymer Structures; (1997) https://doi.org/10.1117/12.267201
Event: X-Ray Investigations of Polymer Structures, 1996, Bielsko-Biala, Poland

Abstract

In the paper we have used the SAXS method in order to determine the supermolecular structure parameters, including the transition layer thickness, of polypropylene/polyamide-6 (PP/PA) blends. The transition layer thickness has been obtained by means of two methods elaborated by Koberstein and co-workers and by Ruland, respectively. Both these methods assume that changes of the electron density in the transition region can be described by a Gaussian function with a standard deviation (sigma) . The parameter (sigma) have been determined graphically from the appropriate plots. Then, the thickness of the phase boundary E was estimated as (root)12(sigma) . The investigated PP/PA blends are multiphase systems and the problem of determination of the boundary width is more complicated because the meaning of Porod's law must be considered with caution. This problem is discussed based on wide range of the investigated samples prepared over various pressure and crystallization temperature conditions.

Citation Download Citation

Jaroslaw Janicki, Andrzej Wlochowicz, and Czeslaw Slusarczyk "Structure investigations of PP-PA blends", Proc. SPIE 3095, X-Ray Investigations of Polymer Structures, (18 February 1997); https://doi.org/10.1117/12.267201

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