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Synthesis of nylon 6-clay hybrid

Published online by Cambridge University Press:  31 January 2011

Arimitsu Usuki ,
Yoshitsugu Kojima ,
Masaya Kawasumi ,
Akane Okada ,
Yoshiaki Fukushima ,
Toshio Kurauchi  and
Osami Kamigaito
Arimitsu Usuki
Affiliation:
Toyota Central Research & Development Labs. Inc., Nagakute-cho, Aichi-gun, Aichi 480-11, Japan
Yoshitsugu Kojima
Affiliation:
Toyota Central Research & Development Labs. Inc., Nagakute-cho, Aichi-gun, Aichi 480-11, Japan
Masaya Kawasumi
Affiliation:
Toyota Central Research & Development Labs. Inc., Nagakute-cho, Aichi-gun, Aichi 480-11, Japan
Akane Okada
Affiliation:
Toyota Central Research & Development Labs. Inc., Nagakute-cho, Aichi-gun, Aichi 480-11, Japan
Yoshiaki Fukushima
Affiliation:
Toyota Central Research & Development Labs. Inc., Nagakute-cho, Aichi-gun, Aichi 480-11, Japan
Toshio Kurauchi
Affiliation:
Toyota Central Research & Development Labs. Inc., Nagakute-cho, Aichi-gun, Aichi 480-11, Japan
Osami Kamigaito
Affiliation:
Toyota Central Research & Development Labs. Inc., Nagakute-cho, Aichi-gun, Aichi 480-11, Japan
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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.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 5 , May 1993 , pp. 1179 - 1184
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

1Blumstein, A., J. Polym. Sci. A3, 2653 (1965).Google Scholar
2Friendlander, H. Z. and Frick, C. R., J. Polym. Sci. B2, 475 (1964).Google Scholar
3Solomon, D.H., J. Appl. Polym. Sci. 12, 1253 (1968).Google Scholar
4Glaveti, O.L. and Polak, L.S., Neftekhim. 3, 905 (1963).Google Scholar
5Usuki, A., Kawasumi, M., Kojima, Y., Okada, A., Kurauchi, T., and Kamigaito, O., J. Mater. Res. 8, 1174 (1993).Google Scholar
6A 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)Google Scholar
7Hermans, P. H., Heikens, D., and Velden, P. F. van, J. Polym. Sci. 30 81 (1958)CrossRefGoogle Scholar
8Want, G. M. Van der and Kruissink, Ch. A.J. Polym. Sci. 35, 119 (1959).Google Scholar