Abstract
Poly(trimethylene terephthalate) (PTT) nanocomposites with two different clays were fabricated via a novel two-step process. Structure, morphology, and cold crystallization of these nanocomposites were studied using differential scanning calorimetry (DSC), Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). XRD results reveals that PTT-15A nanocomposites were fully exfoliated, whereas PTT-30B nanocomposites were partially exfoliated. Non-isothermal cold crystallization temperature and the crystallinity of non-isothermally cold-crystallized PTT-15A nanocomposites increased with increasing 15A content. The crystallinity of isothermally cold-crystallized PTT-15A nanocomposites was shown to increase with crystallization temperature and the clay content, but no clear trend in crystallinity was observed for PTT-30B nanocomposites. The combination of FTIR and DSC has been used to determine the conformational changes during isothermal cold crystallization. The results show that the crysta...
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