GRAFTING STUDIES OF CHITIN

In this study, some new chitin materials by the grafting of chitin with the monomers such as 1-vinylimidazole (VIM), methacrylamide (MAm) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) were synthesized. Firstly, chitin methacrylate was prepared by esterification of primary -OH group with methacryloyl chloride with a 29.24% yield by mole. Secondly, the monomer that VIM, MAm, and AMPS were grafted into a chitin methacrylate via free radical polymerization using 2, 2’-Azobisisobutyronitrile as an initiator in N, N-dimethylformamide. The graft copolymers were characterized by FT-IR spectra and elemental and thermal analysis. The substitution degree is compatible with the literature. Thus, semi-synthetic natural polymers were successfully synthesized.

Keywords:

Chitin, chitin methacrylate, graft copolymer, characterization thermal stability.,

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[1] Akkaya G., Uzun İ., Güzel F. (2009) Adsorption of some highly toxic dyestuffs from aqueous solution by chitin and its synthesized derivatives. Desalination. 249, 1115–1123.
[2] Kittur F. S., Harish Prashanth K. V., Udaya Sankar K., Tharanathan R.N. (2002) Characterization of chitin, chitosan and their carboxymethyl derivatives by differential scanning calorimetry. Carbohydr. Polym. 49, 185–193.
[3] Murray S. B., Neville A. C. (1997) The role of the electrostatic coat in the formation of cholesteric liquid crystal spherulites from α-chitin. Int. J. Biol. Macromol., 20, 123–130.
[4] Sugimoto M., Morimoto M., Sashiwa H., Saimoto H., Shigemasa Y. (1998) Preparation and characterization of water-soluble chitin and chitosan derivatives. Carbohydr. Polym. 36, 49–59.
[5] Liua M., Zhanga Y., Li J., Zhoua C. (2013) Chitin-natural clay nanotubes hybrid hydrogel. International Journal of Biological Macromolecules. 58, 23–30.
[6] Saravana D., Gomathi T., Sudha P. N. (2011) Synthesis, Characterization and Thermal Behavior of Natural Polymer Blend. International Journal of Chemical and Analytical Science. 2 (12), 1265-1269.
[7] Saravanan D., Sudha P. N. (2012) Enhancement of thermal stability in the presence of crosslinking using natural biopolymer. Elixir Appl. Chem. 44, 7374-7377.
[8] Chang C., Chen S., Zhang L. (2011) Novel hydrogels prepared via direct dissolution of chitin at low temperature: structure and biocompatibility. Journal of Materials Chemistry. 21, 3865–3871.
[9] Çankaya N., Temüz M. M. (2015) Grafting of Some Monomers onto Cellulose and Determination of Metal and Water Uptake Properties. Cellulose Chemistry and Technology. 49 (2), 135-141.
[10] Çankaya N. (2016) Synthesis of Graft Copolymers onto Starch and its Semiconducting Properties. Results in Physics. 6, 538–542.
[11] Çankaya N., Temüz M. M. (2012) Characterization and Monomer Ratios of Grafted Cellulose with N-(4-nitrophenyl)acrylamide and Methyl Methacrylate by Atom Transfer Radical Polymerization. Cellulose Chemistry and Technology. 46 (9-10), 551-558.
[12] Çankaya N., Temüz M. M. (2014) Monomer Reactivity Ratios of Grafted Cellulose with N-cyclohexylacrylamide and Methyl Methacrylate by Atom Transfer Radical Polymerization. Cellulose Chemistry and Technology. 48 (3-4), 209-215.
[13] Çankaya N., Temüz M. M., Yakuphanoglu F. (2018) Grafting of some monomers onto cellulose by atom transfer radical polymerization. Electrical conductivity and thermal properties of resulting copolymers. Cellulose Chemistry and Technology. 52 (1-2), 19-26.
[14] Ifuku S. Nomura R., Morimoto M., Saimoto H. (2011) Preparation of Chitin Nanofibers from Mushrooms. Materials. 4, 1417-1425.