Journal
NEW MATERIALS AND PROCESSES, PTS 1-3
Volume 476-478, Issue -, Pages 2223-2226Publisher
TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/AMR.476-478.2223
Keywords
Polypropylene; Polyethylene-glycol; FTIR; crystallization
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The crystallization of isotactic polypropylene (iPP) and polypropylene/polyethylene-glycol (iPP/PEG) blends were investigated by in situ Fourier transform infrared spectroscopy (FTIR) and wide angle X-ray diffraction (WAXD). It was found that the existence of polyethylene-glycol (PEG) does not destroy the helical structure of iPP in the melt, but changes the crystal structure of iPP in the bends. Moreover, the variation tendency of ratios of intensity A998 cm(-1)/A1460 cm(-1) for iPP and iPP/PEG blends showed that the the onset crystallization temperature of iPP is improved by addition of PEG until the PEG content reaches to 5 wt%, and beyond this content, the crystallization point decreases.
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