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- Title
Effect of blending way on β-crystallization tendency of compatibilized β-nucleated isotactic polypropylene/poly(ethylene terephthalate) blends.
- Authors
Wang, Chunguang; Dai, Wei; Zhang, Zishou; Mai, Kancheng
- Abstract
The main purpose of this study is to investigate the β-crystallization tendency in the β-nucleated iPP blends. The β-nucleated iPP/compatibilizers blends, β-nucleated iPP/PET blends and its compatibilized versions with four kinds of compatibilizers (PP- g-MA, PP -g-GMA, POE -g-MA, and EVA -g-MA) were prepared by different blending ways. The effect of compatibilizers and blending ways on the non-isothermal crystallization and melting characteristics and the β-crystallization tendency of β-nucleated iPP blends were studied by differential scanning calorimetry. The relative content of the β-phase were characterised by the k values determined on the basis of the wide angle X-ray diffractogram. The results indicated that the β-crystallization tendency of β-nucleated iPP blends depends on the kinds of compatibilizer. Addition of PP -g-MA significantly reduced the β-crystallization tendency of β-nucleated iPP, while PP -g-GMA, POE -g-MA, and EVA -g-MA have little effect on it. In the compatibilized β-nucleated iPP/PET blends, the blending ways, which controlled the dispersion of β-nucleating agent, influences the β-crystallization tendency intensively. The high β-crystallization tendency and β-crystal content were obtained for compatibilized β-nucleated iPP/PET blends prepared firstly at high temperature and β-nucleating agent added into blends at low temperature; however, the type of compatibilizers has little effect on β-crystallization tendency and melting behavior of blends.
- Subjects
CRYSTALLIZATION; POLYPROPYLENE; POLYETHYLENE terephthalate; MIXTURES; COMPATIBILIZERS; DIFFERENTIAL scanning calorimetry; HIGH temperatures
- Publication
Journal of Thermal Analysis & Calorimetry, 2013, Vol 111, Issue 2, p1585
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-012-2425-0