| Autor: |
Yoshitomo Furushima, Nobuhiro Hirota, Masaru Nakada, Akihiro Masuda, Kazuma Okada, Masatoshi Ohkura, Schick, Christoph |
| Předmět: |
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| Zdroj: |
Journal of Applied Polymer Science; 11/10/2023, Vol. 140 Issue 42, p1-9, 9p |
| Abstrakt: |
Fast scanning calorimetry (FSC) enables rapid sample cooling from the melt at rates of several thousand Kelvin per second. A perfect amorphous state for polypropylene (PP) can be achieved by fast cooling at rates of 5000 K s-1. In comparison, polyethylene (PE) crystallizes during cooling, even at cooling rates accessible with FSC. Thus, in this study, a novel method was proposed for determining the PP/PE mixing ratio with a standard deviation of 1.4 mass% that combines FSC and differential scanning calorimetry. The proposed method considers the above thermal behavior of the components of polyolefin blends. In addition, the proposed method is expected to provide a convenient way to analyze the composition of recycled polyolefins from the market or industrial processes without the need for high-temperature solvents that are typically used in nuclear magnetic resonance or for calibration curves in Fourier transform infrared spectrophotometry. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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