pH- and thermoresponsive properties of hybrid systems based on gelatin and organomodified SiO2 obtained by the sol-gel method

1Bey, IM, 1Tolstov, AL, 1Lebedev, EV
1Institute of Macromolecular Chemistry of the NAS of Ukraine, Kyiv
Dopov. Nac. akad. nauk Ukr. 2016, 11:70-77
Section: Chemistry
Language: Russian

We have studied the pH- and thermoresponsive characteristics of the composites based on biopolymer gelatin and 3-gly cidyloxypropyltrimethoxysilane obtained by the sol-gel method. Sorption capacity of the systems reaches 2700 % at pH 12, whereas at pH 2—9 this parameter is at most 50—90 % depending on the composition. pH-sensitivity of the composites could be controlled by the transformation of the matrix into a basic form and introducing the silver nanoparticles into the structure . Thermoresponsive activity of the hybrid composites is suppressed by their structurization under the action of hydrogen and hydrophobic interactions of different strengths and crosslinks of different nature.

Keywords: biocomposite, gelatin, hybrid structure, lyophilic properties, polysiloxane, sensors, silver
  1. Encyclopedia of Polymer Science and Technology, London: John Wiley & Sons, Inc., 2004.
  2. Martin R.A., Yue S., Hanna J.V., Lee P.D., Newport R.J., Smith M.E., Jones J.R. Phil. Trans. R. Soc. A., 2012, 370: 1422—1443. doi:, PMid:22349249
  3. Kirk-Othmer Encyclopedia of Chemical Technology, In 27 vol., New York: John Wiley & Sons, 1998.
  4. Caló E., Khutoryanskiy V.V. Eur. Polym. J., 2015, 65: 252—267. doi:
  5. Dowling M.B., Lee J.H., Raghavan S.R. Langmuir, 2009, 25, No 15: 8519—8525. doi:, PMid:19317424
  6. Pourjavadi A., Sadeghi M., Hashemi M.M., Hosseinzadeh H. e-Polymers, 2006, 6, No 1: 728—742.
  7. Curcio M., Altimari I., Spizzirri U.G., Cirillo G., Vittorio O., Puoci F., Picci N., Iemma F. J. Nanopart. Res., 2013, 15: 1581. doi:
  8. Zhang Y., Wang Z., Wang Y., Zhao J., Wu C. Polymer, 2007, 48, No 19: 5639—5645. doi:
  9. Pietras P., Przekop R., Maciejewski H. Ceramics-Silikáty, 2013, 5, No 1: 58—65.
  10. Ren L., Tsuru K., Hayakawa S., Osaka A. J. Sol-Gel Sci. Technol., 2001, 21: 115—121. doi:
  11. Tominaga T., Tirumala V.R., Lee S., Lin E.K., Gong J.P., Wu W.-L. J. Phys. Chem. B., 2008, 112, No 13: 3903-3909. doi:, PMid:18331022
  12. Wong R.S.H., Ashton M., Dodou K. Pharmaceutics, 2015, 7: 305—319. doi:, PMid:26371031 PMCid:PMC4588202
  13. Gong J.P. Soft Matter., 2010, 6: 2583—2590. doi:
  14. Kirsh Yu.E. Poly-N-vinylpyrrolidone and other poly-N-vinylamides: Synthesis and physico-chemical properties, Moscow: Nauka, 1998 (in Russian).
  15. Tolstov A.L., Sorochynska L.A., Lebedev E.V. Reports of the National Academy of Sciences of Ukraine, 2014, 12: 134—141 (in Russian). doi: