title: Synthesis, characterization and non-isothermal decomposition kinetic of a new galactochloralose based polymer.
abstract: A glycopolymer, poly(3-O-methacroyl-5,6-O-isopropylidene-1,2-O-(S)-trichloroethylidene-α-d-galactofuranose) (PMIPTEG) was synthesized from the sugar-carrying methacrylate monomer, 3-O-methacroyl-5,6-O-isopropylidene-1,2-O-(S)-trichloroethylidene-α-d-galactofuranose (MIPTEG) via conventional free radical polymerization with AIBN in 1,4-dioxane. The structures of glycomonomer and their polymers were confirmed by UV-vis, FT-IR, (1)H NMR, (13)C NMR, GPC, TG/DTG-DTA, DSC, and SEM techniques. SEM images showed that PMIPTEG had a straight-chain length structure. On the other hand, the thermal decomposition kinetics of polymer were investigated by means of thermogravimetric analysis in dynamic nitrogen atmosphere at different heating rates. The apparent activation energies for thermal decomposition of the PMIPTEG were calculated using the Kissinger, Kim-Park, Tang, Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS) and Friedman methods and were found to be 100.15, 104.40, 102.0, 102.2, 103.2 and 99.6 kJ/mol, respectively. The most likely process mechanism related to the thermal decomposition stage of PMIPTEG was determined to be a Dn deceleration type in terms of master plots results.
authors.affiliation: Department of Chemistry, Faculty Sciences, Ege University, 35100 İzmir, Turkey.
authors.forename: Gökhan
authors.initials: G
authors.lastname: Kök
authors.forename: Kadir
authors.initials: K
authors.lastname: Ay
authors.forename: Emriye
authors.initials: E
authors.lastname: Ay
authors.forename: Fatih
authors.initials: F
authors.lastname: Doğan
authors.forename: Ismet
authors.initials: I
authors.lastname: Kaya
mesh_terms: D060326:Chemistry Techniques, Synthetic; D002697:Chloral Hydrate / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D005697:Galactosides / Q000138:chemical synthesis* / Q000737:chemistry*; D007700:Kinetics; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000138:chemical synthesis* / Q000737:chemistry*; D013696:Temperature
chemical_list: D005697:Galactosides; D011108:Polymers; D011109:Polymethacrylic Acids; D002697:Chloral Hydrate
keywords: Carbohydrate based polymer; Chloralose; Decomposition kinetic; Methacrylate; Thermal analysis