Yaşar, Alper ÖmerKaya, İsmet2025-01-272025-01-2720191060-13251520-5738https://doi.org/10.1080/10601325.2019.1617038https://hdl.handle.net/20.500.12428/22644The synthesis of conductive and eco-friendly new chitosan composite biopolymer with a novel aldehyde functionalized ionic liquids (AFILs) was investigated in this work. The AFILs, 1,1 '-(pentane-1,5-diyl) bis(4-formylpyridin-1-ium) dibromide (C5PyBr), 1,1 '-(octane-1,8-diyl) bis(4-formylpyridin-1-ium) dibromide (C8PyBr) and 1,1 '-(decane-1,10-diyl) bis(4-formylpyridin-1-ium) dibromide (C10PyBr) have been synthesized and they were characterized by FT-IR, UV-vis and H-1-NMR and (13) C-NMR, TG, and DSC analyses. The synthesized AFILs, C5PyBr C8PyBr and C10PyBr were used as cross-linker for chitosan biopolymers and the cross-linked chitosan composites, chitosan/1,1 '-(pentane-1,5-diyl)bis(4-formylpyridin-1-ium)dibromide (Ch/C5PyBr), chitosan/1,1 '-(octane-1,8-diyl)bis(4-formylpyridin-1-ium)dibromide (Ch/C8PyBr) and chitosan/1,1 '-(decane-1,10-diyl)bis(4-formylpyridin-1-ium)dibromide (Ch/C10PyBr) were prepared. Herein, the synthesized AFILs have not only cross-linked chitosan, but also provide them the desired novel, functional groups. The prepared chitosan composites were characterized by FT-IR for the analysis of structural, TG and DSC for the thermal behavior, and an electrometer for the electrical conductivity. The electrical conductivity of the prepared Ch/C5PyBr composite was measured as 1.69 x 10(-5) +/- 2.37 x 10(-5) S cm(-1) by the four-point probe at room temperature and this value is higher about 4500-fold than the electrical conductivity of the chitosan.eninfo:eu-repo/semantics/closedAccessChitosan4-pyridinecarboxaldehydeionic liquidaldehyde functionalized ionic liquidpolymeric ionic liquidsconductive chitosancrosslinking of chitosanArticle56986087010.1080/10601325.2019.1617038Q3WOS:0004697049000012-s2.0-85066881517Q2