IX International Conference on Small Angle Scattering

J. Phys. IV France 03 (1993) C8-67-C8-70
DOI: 10.1051/jp4:1993814

SAXS analysis of hyperstructure in carboxylato-telechelic poly(tert.butyl acrylate)'s

C. MAUS¹, F. FONTAINE², G. VAN DEN BOSSCHE³, R. SOBRY² and R. JÉRÔME<sup>4

1</sup>  Center for Education and Research on Macromolecules (CERM), Institute of Chemistry B6, University of Liège, Sart-Tilman, 4000 Liège, Belgium
²  Laboratory of Experimental Physics, Institute of Physics B5, University of Liège, Sart-Tilman, 4000 Liège, Belgium
³  Unité de Cristallographie, Institute of Physics B5, University of Liège, Sart-Tilman, 4000 Liège, Belgium
⁴  Center for Education and Research on Macromolecules (CERM), Institute of Chemistry B6, University of Liège, Sart- Tilman, 4000 Liège, Belgium

Abstract
A new class of Halato-Telechelic Polymers (HTP) has been prepared. Preleminary SAXS results on α, ω-carboxy poly (tert.butyl acrylate)s end-neutralized with Ba, Mg and Na alkoxides show that the "ionic peak" usually observed in ionomers goes undetected. In contrast, a series of peaks appear at very low angles corresponding to Bragg spacings from 70 to 14 nm. The successive peak positions are consistent with a hexagonal structure. In order to confirm this new experimental evidence, the effects of several parameters on the SAXS patterns have been investigated. Samples of various counterions and molecular weigths have been prepared under different conditions. Morphological changes have also been analyzed in the presence of a non-polar solvent (toluene).

© EDP Sciences 1993