Abstract
In order to investigate the crystallization behavior of post-consumer waste polypropylene (PCW-PP) in the presence of an aryl amide derivative β-nucleating agent (TMB-5), differential scanning calorimetry (DSC), wide-angle X-ray diffraction and polarized-light optical microscopy were used. The content of calcium carbonate (CaCO3) in four kinds of PCW-PP, as well as the relative β-content of PCW-PP nucleated by 0.3 mass% TMB-5, is estimated by thermogravimetric analysis and DSC. The results indicate that the commercial grade TMB-5 has strong β-nucleating effect on the crystallization of PCW-PP and increases the crystallization temperature of PCW-PP in the presence of different content of CaCO3 with α-nucleating effect. As a result, PCW-PP with β-phase content higher than 75% is prepared through the addition of 0.3 mass% TMB-5, which has significance for high-value added recycling of PCW-PP.
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The project was supported by National Natural Science Foundation of China (Grant No. 51703058) and Research Foundation of Education Department of Hunan Province (Grant No. 18B292).
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Ding, Q., Fu, H., Hua, C. et al. Crystallization of post-consumer polypropylene in the presence of β-nucleating agent. J Therm Anal Calorim 138, 379–385 (2019). https://doi.org/10.1007/s10973-019-08248-y
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DOI: https://doi.org/10.1007/s10973-019-08248-y