Liquid crystalline epoxy thermoset with azomethine mesogen

A. Mija; C. N. Cascaval

Published : 2022-08-18

Vol. 54 No. 11-12 (2009)

Liquid crystalline epoxy thermoset with azomethine mesogen

A. Mija C. N. Cascaval

Abstract

This work is a continuation of our earlier investigations on the liquid crystalline epoxy resins containing azomethine as mesogen group. The present study concerns the curing reaction of an azomethine epoxy monomer, namely, N,N'-(1,4-phenylenedimethylidyne)-di-4-(2,3-epoxypropoxy) aniline (AZ-2) in the presence of 2-amino-biphenyl (2-ABPh), used as a curing agent. The crosslinking reaction, the phase transitions and the thermal properties of the synthesized thermoset were monitored by differential scanning calorimetry (DSC), polarized optical microscopy and wide-angle X-ray scattering (WAXS). The main thermal transitions observed by DSC in dynamic conditions are due to both melting of the mixture components and the crosslinking reaction. The reaction of AZ-2 monomer with 2-ABPh takes place in the temperature range from 184 to 278°C, and the process is accompanied with homopolymerization of the epoxy groups. The microscopic technique revealed the appearance of a smectic type mesophase, the result being confirmed by WAXS measurements.

Keywords

żywice epoksydowe ; ugrupowanie azometynowe mezogeniczne ; sieciowanie ; struktura ciekłokrystaliczna ; mezofaza smektyczna epoxy resins ; azomethine mesogen ; curing ; liquid crystal ; smectic mesophase

Details

References

Statistics

Authors

Download files

PDF

Zasady cytowania

Mija, A., & Cascaval, C. N. (2022). Liquid crystalline epoxy thermoset with azomethine mesogen. Polimery, 54(11-12), 786–789. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/1257

References

Broer D. J., van Haaren J. A. M. M., Bastinasen C. W. M.: e-Polymers 2001, No 023.

2. Mossety-Leszczak B., Galina H., Wlodarska M.: Polimery 2003,48,511.

3. Ribera D., Montecon A., Serra A.: J. Polym. Scl, Part A: Polym. Chem. 2002,40, 3916.

4. Cho S. H., Lee J. Y., Douglas E. P.: High Perform. Polym. 2006,18, 83.

5. Mititelu-Mija A., Cascaval C. N., Navard P.: Design. Monom. Polym. 2005, 8,487.

6. May C. A.: "Epoxy Resins: Chemistry and Technology", 2nd edition, Marcel Dekker, New York 1988.

7. Rosu L., Ciobanu C., Rosu D., Cascaval C. N.: Poli-mery 2008, 53, 644.

8. Shiota A., Ober C. K.: Prog. Polym. Sci. 1997,22, 975.

9. Oleksy M., Heneczkowski M., Galina H.: Polimery 2006, 51, 799.

10. Mazela W., Czub P., Pielichowski J.: Polimery 2005, 50,100.

11. Castell P., Serra A., Galia M.: J. Polym. Sci., Part A: Polym. Chem. 2003,41,1536.

12. Amendola E., Carfagna C., Ganberini M., Pisanielloi G.: Macromol. Chem. Phys. 1995,196,1577.

13. Mormann W., Brocher M.: Macromol. Chem. Phys. 2001, 202, 223.

14. Oritz C., Kim R., Rodighiero E., Ober C. K., Krammer E. J.: Macromolecules 1998, 31,4074.

15. Rosu D., Mititelu A., Cascaval C. N.: Polym. Testing 2004,23, 209.

16. Cascaval C. N., Mititelu A.: Mat. Plast. 2005,42,120.

17. Mallon J. J., Adams F. M.: J. Polym. Set, Part A: Polym. Chem. 1991,31,2249.

18. Carfagna C., Amendola E., Giamberini M.: Macromol. Chem. Phys. 1994,195,2397.

19. Mititelu-Mija A., Cascaval C. N.: High Perform. Polym. 2007,19,135.

20. Mititelu A.: Thesis "Mesomorphe Epoxyde Resins", Ecole de Mines de Paris, Sophia, Antipolys, France 2001.

21. Mija A., Cascaval C. N., Stoica G., Rosu D., Simio-nescu B. C.: Eur. Polym. J. 1996, 32, 7769.

22. Mititelu-Mija A., Cascaval C. N., Navard P.: J. Opto. Adv. Mater. 2007, 9, 3628.

Google Scholar

Altmetric indicators

Citing articles via

Statistics

Total abstract views : 0

PDF Downloads : 0