| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1398218 | European Polymer Journal | 2013 | 9 Pages |
In this paper the formation of a partially ordered amorphous phase in PET/precipitated calcium carbonate (PCC) nanocomposites is highlighted and its effects on physical properties are discussed. PET/PCC nanocomposites are prepared by melt mixing, using an anhydride-modified PET (TPET) coupling agent synthesized on purpose. The effect of TPET/PCC interactions on PET amorphous phase conformation is revealed by solid state NMR and further investigated realizing a model of polymer/filler interface, by adsorbing TPET onto PCC. As a consequence of the interactions with the inorganic surface, the adsorbed polymer forms a trans-rich amorphous phase unable to crystallize.Addition of TPET also leads to an increase in the glass transition temperature and a reduction in the oxygen permeability of the nanocomposites.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A coupling agent for PET/calcium carbonate nanocomposites was synthesized. ► A change in the arrangement of PET amorphous phase was evidenced. ► A model for the interphase was realized confirming the formation of a partially ordered amorphous. ► Glass transition and oxygen barrier of nanocomposites were increased.
