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Nucleation ability of nonmetallic organophosphate derivatives in isotactic polypropylene

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Abstract

Nonmetallic organophosphate derivatives of ammonium (An), triethylammonium (CAn), and quaternary phosphonium (SP) salts of 2,2′-methylene-bis-(4,6-di-tert-butylphenyl) phosphate were synthesized and characterized. Their nucleation effects on isotactic poly(propylene) (iPP) were investigated in detail. The melting temperature of An, CAn, and SP was 262, 208, and 271 °C, respectively, which was near to the processing temperature of iPP (220 °C). Their particle morphologies revealed a great difference. An with a glossy rod-like structure can be uniformly dispersed in iPP matrix, while the bulk-like and layer structures of CAn and SP cannot play the same role. Moreover, with the incorporation of these derivatives at the same mass (0.15 mass%), iPP/An possesses an increased crystallization peak temperature of 15 °C and significant enhanced optical property as compared to neat iPP, but iPP/CAn and iPP/SP do not showed an overall enhanced property. Furthermore, nucleation effects of the compound nucleating agent consisting of these derivatives and sodium laurate (SNa) (a conventional compounded composition) on iPP were examined to clarify the role of particle morphology on the dispersibility in iPP. The results demonstrated that SP-SNa presented the most uniform dispersion in iPP, and the haze value of iPP/SP-SNa (concentration of 0.15 mass% of SP-SNa) was decreased to 11.8 %, showing the best synergistic effect of layer shape of SP with SNa.

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Acknowledgements

The work was financially supported the Science and Technological project of Guizhou Province [2015]3008, National Natural Science Foundation of China (51263003, 51463006), Science and Technology Innovation Talent Team Project in Guizhou Province ([2015]4006), High-level Innovative Talent-training Program in Guizhou Province ([2015]4037), and Guizhou Province Science and Engineering Project ([2013]4005).

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Authors and Affiliations

  1. National Engineering Research Center for Compounding and Modification of Polymer Materials, Guiyang, 550014, People’s Republic of China

    Lijuan Long, Wentao He, Juan Li, Shuhao Qin & Jie Yu

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  1. Lijuan Long
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  2. Wentao He
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  3. Juan Li
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  4. Shuhao Qin
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  5. Jie Yu
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Correspondence to Jie Yu.

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Long, L., He, W., Li, J. et al. Nucleation ability of nonmetallic organophosphate derivatives in isotactic polypropylene. J Therm Anal Calorim 127, 2283–2291 (2017). https://doi.org/10.1007/s10973-016-5790-2

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  • DOI: https://doi.org/10.1007/s10973-016-5790-2

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