Influence of Polymerization Conditions on the Microindentation Properties of Poly(allyl(p-allylcarbonate)benzoate)

Galina Zamfirova, Valentin Gaydarov and Delia Lopez-Velazquez

Flat plates of poly(allyl(p-allylcarbonate) benzoate) obtained via photopolymerization and thermal polymerization have been studied by means of microindentation. The plates were about 3 mm thick. The values of microhardness (MHV)/total microhardness (MHT) have been determined. Accordingly, structural changes in the plate bulk due to the polymerization method were detected. The plates obtained by photopolymerization possess a superficial layer harder than the inner layers and its thickness is not uniform. Also, microindentention shows that the increase in the polymerization time during thermopolymerization leads to improved elasticity and resistance against plastic deformation. Microindentation data of the plates here studied shows that poor mechanical properties correspond to an unfinished network, while good mechanical properties correspond to a better crosslinked network.

[1] Lopez-V. D., Herrera-G. A. and Castillo-Rojas S.: Radiation Physics and Chem., 2011, 80, 481.
[2] Bulichev S. and Alehin V.: Ispytanie Materialov Neprerivnim Vdalivaniem. Mashinostroenie, Moskwa 1990.
[3] Balta-Calleja F. and Fakirov S.: Microhardness of Polymers. Cambridge Univ. Press, Cambrige, UK 2000.
[4] Fischer-Cripps A.: Nanoindentation, 2nd edn. Springer-Verlag, New York 2004.
[5] Gilman J.:Chemistry and Physics of Mechanical Hardness. Wiley, NY 2009.
[6] Belfadhel H. et al.: Pat. US 2008/0287640 A1, Publ. Nov. 20, 2008.
[7] Jansen B. et al.: Pat. US 2008/0004418 A1, Publ. Jan. 03, 2008.
[8] Salamone J. (Ed.): Polymeric Materials Encyclopedia, 4th edn. CRC Press, New York 1996.
[9] Zhang X., Zhang S., Zhang Y. et al.: J. Macrom. Sci. B, 2011, 50, 1890.
[10] Tjong S. and Meng Y.: Mat. Res. Bulletin, 2004, 39, 1791.
[11] Chau J., Hsu S., Chen Y. et al.: Adv. Powder Techn., 2010, 21, 341.
[12] Bermudez M., Brostow W., Carrion-Vilches F. and Sanes J.: J. Nanosci. Nanotechnol., 2010, 10, 6683.
[13] Arribas A., Bermudez M., Brostow W. et al.: EXPRESS Pol. Lett., 2009, 3, 621.
[14] Brunelle D. and Korn M.: Advances in Polycarbonates ACS Symp., 2005, 898.
[15] Yu T., Zhou Y. et al.: Polymer Degrad. and Stability, 2009, 94, 253.
[16] Qureshi A., Shah S., Pelagade S. et al.: J. Phys., 2010, Conf. Ser., 208.
[17] Katajisto J., Linnolahti M. and Pakkanen T.: Chem. Phys. Lett., 2004, 385, 25.
[18] Rodriguez R., Garcia J., Sanchez R. et al.: Surface and Coatings Techn., 2002, 158-159, 636.
[19] Bajpai R., Keller J. and Datt S.: Makromolekulare Chemie. Macrom. Symposia, 1988, 20-21, 461.
[20] Bajpai R., Sharma S., Vastal V. and Chandra B.: Bull. Mater. Sci., 2003, 26, 537.
[21] Fang T., Chang W. and Tsai S.: Microelectronics J., 2005, 36, 55.
[22] Tabor D.: The Hardness of Metals. Oxford University, London 1951.
[23] Lorenzo V. and Pereña J.: Current Trends Polym. Sci., 1999, 4, 65.
[24] Lorenzo V., Pereña J. and Fatou J.: Macromol. Chem. and Eng., 1989, 172, 25.
[25] Benavente R., Pérez E. and Quijada R.: J. Polym. Sci., Polym. Phys., 2001, 39, 277.
[26] Sacristán J., Benavente R., Pereña J. et al.: J. Therm. Anal. Cal., 1999, 58, 559.
[27] Zamfirova G., Lorenzo V., Benavente R. and Pereña J.: J. Appl. Polym. Sci., 2003, 88, 1794.
[28] Zamfirova G. and Dimitrova A.: Polym. Test, 2000, 19, 533.
[29] Zamfirova G., Gaydarov V., Zaharescu T. and Silva L.: Chemicke Listy S, 2010, 104, 283.
[30] Baleva M., Darakchieva V., Goranova E. and Trifonova E.: Mat. Sci. and Eng., 2000, B78, 131.
[31] Privalko V., Sukhorukov D., Karger-Kocsis J. and Balta Calleja F.: J. Macromol. Sci. B, 1999, 38, 27.