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Anionic nylon 6 modified with poly(oxypropylene) up to 40% by weight and obtained by one-shot reaction injection molding ("one-shot" RIM) was characterized by wide-angle X-ray diffraction, transmission electron microscopy, differential scanning calorimetry, thermal gravimetric analysis, and Fourier transform infrared spectroscopy. Cross analysis by different techniques pointed out that the polymer contained only the a-form and the modifier had little, if any, influence on the crystallinity index, which was found to be about 40% when referred to the nylon 6 fraction only. Morphological changes at different modifier contents were ascribed to different block copolymer structures.

The interaction of hexachlorocyclophosphazene (HCCP) with the hydroxylated silicon-based surfaces is studied by a combination of XPS experimental analysis and theoretical ab initio simulations, including the estimate of the energy barriers via CI-NEB method to determine the minimum energy reaction paths. Several possible, stable chemisorbed configurations are found to exist, whose structural, energetic, and electronic properties have been analyzed in detail. The theoretical results are in good qualitative agreement with available experimental data. In particular, we get indications that water plays a crucial role in the surface functionalization with HCCP, although the presence of a suitable solvent (e.g. tetrahydrofuran, THF) seems to be essential