期刊
EUROPEAN POLYMER JOURNAL
卷 49, 期 2, 页码 419-427出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2012.10.008
关键词
Nanocomposite; Poly(ethylene terephthalate); Calcium carbonate; lnterphase; Solid state NMR
资金
- FIRB Rete Nazionale di Ricerca sulle Nanoscienze ItalNanoNet [RBPR05JH2P]
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 anhydridemodified 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. (c) 2012 Elsevier Ltd. All rights reserved.
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