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Synthesis of nylon 6-clay hybrid

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Abstract

It was found that montmorillonite cation exchanged for 12-aminolauric acid (12-montmorillonite) was swollen by ∊-caprolactam to form a new intercalated compound. Caprolactam was polymerized in the interlayer of montmorillonite, a layer silicate, yielding a nylon 6-clay hybrid (NCH). The silicate layers of montmorillonite were uniformly dispersed in nylon 6. The carboxyl end groups of 12-aminolauric acid in 12-montmorillonite initiated polymerization of ∊-caprolactam, and as 12-montmorillonite content became larger, the molecular weight of nylon was reduced. From the result of end-group analysis, carboxyl end groups were more than amino end groups. The difference between the carboxyl and the amino end groups was attributed to ammonium cations (-NH3 +) of nylon molecules, because the difference agreed with the anion site concentration of the montmorillonite in NCH. It is suggested that the ammonium cations in nylon 6 interact with the anions in montmorillonite.

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References

  1. A. Blumstein, J. Polym. Sci. A3, 2653 (1965).

    Google Scholar 

  2. H. Z. Friendlander and C. R. Frick, J. Polym. Sci. B2, 475 (1964).

    Google Scholar 

  3. D.H. Solomon, J. Appl. Polym. Sci. 12, 1253 (1968).

    Article  CAS  Google Scholar 

  4. O.L. Glaveti and L.S. Polak, Neftekhim. 3, 905 (1963).

    Google Scholar 

  5. A. Usuki, M. Kawasumi, Y. Kojima, A. Okada, T. Kurauchi, and O. Kamigaito, J. Mater. Res. 8, 1174 (1993).

    Article  CAS  Google Scholar 

  6. A layer of montmorillonite has a thickness of 10 Å and a specific gravity of 2.5. The thickness of organic-parts-occupied 12-aminolauric acid is 7.2 Å, and its gravity is 1.0. Total specific gravity of 12-montmorillonite is calculated to 1.9 (2.5 X 10 + 1.0 x 7. 2/17.21)

  7. P. H. Hermans, D. Heikens, and P. F. van Velden, J. Polym. Sci. 30 81 (1958)

    Article  CAS  Google Scholar 

  8. G. M. Van der Want and Ch. A. Kruissink J. Polym. Sci. 35, 119 (1959).

    Article  Google Scholar 

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Usuki, A., Kojima, Y., Kawasumi, M. et al. Synthesis of nylon 6-clay hybrid. Journal of Materials Research 8, 1179–1184 (1993). https://doi.org/10.1557/JMR.1993.1179

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  • DOI: https://doi.org/10.1557/JMR.1993.1179

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