eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-01-08 2 2 79 84 3444 article M. Alamgir Kabir 1 M. Monimul Huque 2 M. Rabiul Islam 1 Department of Chemistry, Jahangirnagar University, Savar, Dhaka (Bangladesh) Department of Chemistry, Bangladesh University of Engineering and Technology,Dhaka - 1000 (Bangladesh) Jute Fibre was treated with bifunctional diazonium salts under the influence of some mordants (copper sulphate, nickel sulphate, potassium dichromate and potassium permanganate) in acidic and basic media. The formation of complex in the polymer system (complexed fibre) has been observed by the infrared spectra and nitrogen content estimation. The physico-mechanical properties, viz. tensile strength, tenacity, elongation at break, moisture regain, shrinkage and loss in weight of jute fibre has been studied. The tensile strength, tenacity, elongation at break and moisture regain properties of the treated (dyed) fibre are found lower in comparison with those of raw (control) fibre. However, higher tensile strength and tenacity of the complexation fibre in comparison to diazonium salts treated fibre are observed. The dyed fibre in basic media shows higher fibre strength as compared to the fibre which dyed in acidic media. The nature of the shades developed on jute fibre is also reported. https://www.biotech-asia.org/vol2no2/modification-of-jute-fibre-by-bifunctional-diazonium-salts-in-the-presence-of-various-mordants/ Jute fibre; bifunctional benzenediazonium salts; mordants