Synthesis and characterization of the poly(methyl methacrylate-styrene) copolymer obtained by suspension polymerization

Authors

  • Carlos Cordoví Instituto Superior Politécnico "José Antonio Echeverría"
  • Lizette Morejón Universidad de la Habana
  • Dionisio Zaldívar Universidad de la Habana
  • Lissette Agüero Universidad de la Habana
  • Mabel Alvarez Universidad de la Habana
  • Natalia Davidenko Universidad de la Habana
  • Cira Hernández Universidad de la Habana

Abstract

The influence of the methyl methacrylate (MMA)-styrene (STY) copolymer composition on the molecular weight and the wettability of the polymer used for bone cements was studied. The suspension polymerization was used to obtain the polymeric beads. The mole fraction of MMA (f..) of the comonomer feed was modified between 0,96 and 0,60. The composition of the copolymer was analysed by NMR-H'. It was found that the composition of the copolymer changed between 0,98 and 0,76. It was also detected that the increase of STY concentration in the comonomer feed decreased the molecular weight of copolymer. The initial copolymer composition of 0,80 MMA and 0,20 STY was appropriated for the production of beads for bone cement. The influence of stirring rate on the particle size distribution was studied in the interval 400-700 r/min. It was found that the increase of stirring rate produces a reduction of particle size, being possible to relate the final average particle size to the stirring rate by the Hopff equation. The polymers obtained with MMA/ST 0,8/0,2 of composition and stirring rate between 600-700 r/min have good properties of average molecular weight and particles size distribution to be used as solid part of bone cements.

Published

2022-05-27

How to Cite

Cordoví, C. ., Morejón, L. ., Zaldívar, D. ., Agüero, L. ., Alvarez, M. ., Davidenko, N. ., & Hernández, C. . (2022). Synthesis and characterization of the poly(methyl methacrylate-styrene) copolymer obtained by suspension polymerization. NATIONAL CENTER FOR SCIENTIFIC RESEARCH (CENIC) CHEMICAL SCIENCES JOURNAL, 32(2), 093-097. Retrieved from https://revista.cnic.cu/index.php/RevQuim/article/view/1636

Issue

Section

Research articles