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Crystallization and thermal behavior of recycled polypropylene composites containing nonmetallic printed circuit board powder and β-nucleating agents

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Abstract

A recycled packaging material was found to be a PP copolymer after examinations with DSC, FTIR, and TG techniques. It produced 4.39% residue when heated to 800 °C. In addition, SEM microscopic observations revealed some particles dispersed in the recycled PP (recPP) matrix, resulting in a great source for promotion of recPP crystallization temperature. In the present work, NPG, TMB-5, and CaPA were used as β-nucleating agents to modify PP and recPP crystallization behaviors. The results imply that these three nucleating agents are effective for PP to form β crystal in which TMB-5 revealed the best induction and heterogeneous nucleation effects. However, the nucleating effect for NPG decreased when it was added to recPP. The effect of CaPA also weakened, whereas TMB-5 performed well with the optimum content of 0.1%. When CaPA was added together with PCB powder, the β-nucleating effect of CaPA was enhanced, making β crystal as the main form when using only 0.01% CaPA.

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Acknowledgements

This project was supported by Science and Technology Projects of Guangdong Province, China (Grant No. 2013B021300019).

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Authors and Affiliations

  1. College of Chemistry and Materials, Jinan University, Guangzhou, 510632, People’s Republic of China

    Mingqing Li

  2. Institute of Advanced Wear and Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, People’s Republic of China

    Jiaming Xian, Zhidan Lin & Shuling Deng

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  1. Jiaming Xian
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  2. Mingqing Li
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  3. Zhidan Lin
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  4. Shuling Deng
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Correspondence to Zhidan Lin.

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Xian, J., Li, M., Lin, Z. et al. Crystallization and thermal behavior of recycled polypropylene composites containing nonmetallic printed circuit board powder and β-nucleating agents. J Therm Anal Calorim 130, 869–878 (2017). https://doi.org/10.1007/s10973-017-6445-7

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  • DOI: https://doi.org/10.1007/s10973-017-6445-7

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