Hostname: page-component-7f64f4797f-zzvtc Total loading time: 0 Render date: 2025-11-04T09:11:55.569Z Has data issue: false hasContentIssue false
  • English
  • Français

Evidence of ionic aggregates in some ampholytic polymers by transmission electron microscopy

Published online by Cambridge University Press:  31 January 2011

V. M. Castaño ,
A. E. González ,
J. Cardoso ,
O. Manero  and
V. M. Monroy
V. M. Castaño
Affiliation:
Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364, 01000 México, D. F.
A. E. González
Affiliation:
Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364, 01000 México, D. F.
J. Cardoso
Affiliation:
Instituto de Investigacions en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, 04510 México, D. F.
O. Manero
Affiliation:
Instituto de Investigacions en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, 04510 México, D. F.
V. M. Monroy
Affiliation:
Instituto de Investigacions en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, 04510 México, D. F.
Get access

Abstract

Transmission electron microscopy observations were conducted on some zwitterionic polymers. Our observations were concentrated on the morphology of the solid state of poly (4-vinyl pyridine-sulfopropyl bctaines), with different degrees of quaternization. Among the morphological features, a microstructure arising from aggregated regions in the range of 50 to 200 Å is observed. Quite striking is the fact that this structure is absent in the micrographs for the base polymer, indicating that the aggregates are due to the interactions of the ion pairs of the polyzwitterions, as in the ionomer case. It is also found that the density of the aggregates increases when we increase the zwitterionic content of the copolymers.

Information

Type
Articles
Information
Journal of Materials Research , Volume 5 , Issue 3 , March 1990 , pp. 654 - 657
Copyright
Copyright © Materials Research Society 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

1Salamone, J. C. and Rice, W. C., in Polyampholytes, Encyclopedia of Polymer Science and Engineering, 2nd ed., edited by Mark, H. F., Bikales, N. M., Overbergen, C. G., and Menges, G. (John Wiley & Sons, 1988), Vol. 11, pp. 514–530.Google Scholar
2Monroy Soto, V. M. and Galin, J. C., Polymer 25, 121 (1984).CrossRefGoogle Scholar
3Salamone, J. C., Volksen, W., Israel, S.C., Olsen, A. P., and Raia, D.C., Polymer 18, 1058 (1977).Google Scholar
4Salamone, J. C., Volksen, W., Olsen, A. P., and Israel, S. C., Polymer 19, 1157 (1978).Google Scholar
5Schulz, D. N., Kitano, K., Danik, J. A., and Kaladas, J. J., Proc. of the ACS Division of Polymeric Materials 57, 149 (1987).Google Scholar
6Itoh, Y., Abe, K., and Senoh, S., Makromol. Chem. 187, 1691 (1986).CrossRefGoogle Scholar
7Monroy Soto, V. M. and J. C. Galin, Polymer 25, 254 (1984).CrossRefGoogle Scholar
8Salamone, J. C., Volksen, W., Israel, S. C., and Raia, D. C., Polym. Prepr. Am. Chem. Soc. Div. Polym. Chem. 36 (2), 261 (1974).Google Scholar
9Mathis, A., Zheng, Y., and Galin, J. C., Makromol. Chem. 7, 333 (1986).CrossRefGoogle Scholar
10Marchal, E., Monroy Soto, V. M., and Galin, J. C., Proc. 5th Int. Symp. Electrets, Heidelberg 1985 (Arsil. from IEEE, NY), 247 (1985).Google Scholar
11Monroy Soto, V. M., Marchal, E., Mathis, A., Meurer, B., and Galin, J. C., ANTEC 84, 297 (1984).Google Scholar
12Davidson, N. S., Fetters, L. J., Funk, W. G., Graessley, W.W., and Hadjichristidis, N., Macromolecules 21, 112 (1988).CrossRefGoogle Scholar
13Fetters, L. J., Graessley, W.W., Hadjichristidis, N., Kiss, A. D., Pearson, D. S., and Younghouse, L. B., Macromolecules 21, 1644 (1988).CrossRefGoogle Scholar
14Bredas, J. L., Chance, R. R., and Silbey, R., Macromolecules 21, 1633 (1988).CrossRefGoogle Scholar
15Cardoso, J., Soria, O., Manero, O., and Monroy, V. M., Proc. Int. Symp. Polym. Mat., San Sebastian, Spain, 187 (1987).Google Scholar
16Sawyer, L. C. and Grubb, D.T., Polymer Microscopy (Chapman and Hall, New York, 1987).Google Scholar
17Castaño, V. M. and Lagos, F., Mater. Lett, (in press).Google Scholar
18MacKnight, W. J. and Earnest, T. R., J. of Polym. Sci. Macrom. Rev. 16, 41 (1981).CrossRefGoogle Scholar