Chelation and Metal-Ion Complex Formation of Chitosan Treated Cotton


  • Sudirman Habibie Pusat Teknologi Industri Proses - BPPT



Chitin dan chitosan adalah bahan “chelate†yang sangat kuat untuk ion transisi logam terutama tembaga, nikel dan merkuri, dan sifat-sifat ini yang akan intensif di bahas. Pada studi ini kain kapas (cotton) dikerjakan dengan larutan chitosan-asam polikarboksilat untuk memperoleh kain kapas-chitosan yang mengandung gugus group karboksilat (-COOH) dan gugus amina (-NH2) fungsional. Penggunaan asam polykarboksilat (asam sitrat dan maleik) pada pelarutan chitosan menghasilkan group karboksil 0,5 meqs/g pada kain yang dicelup dengan larutan chitosan asam karboksilat. Kemudian kain kapas yang telah mengandung gugus karboksilat dan gugus amina ini dicelupkan pada larutan garam logam (garam tembaga dan seng). Terbukti bahwa larutan garam tembaga (copper) memberikan warna biru pada kain, hal ini mengindikasikan telah terjadi reaksi kompleks atau “Chelateâ€. Implikasi dari hasil ini maka diperkirakan kandungan group karboksil dan amina ini akan mempengaruhi pada pencelupan kain, namun hal ini tidak diuji.

Kata kunci : Chitosan, Kain Kapas, Chelate, Asam asetat, Asam citrate, Asam maleik, Tembaga sulphate, Tembaga acetate.


Chitin and chitosan are powerfull chelating agents for transition metal ions, particularly copper, nickel and mercury, and these properties have been extensively reviewed. In this study, cotton fabric has been treated with chitosan- polycarboxylic acid solution to form chitosan treated cotton fabric containing carboxyl (-COOH) and amine (-NH2) functional groups. The use of polycarboxylic acids (citric and maleic acids) to dissolve chitosan has given carboxyl groups 0.5 meqs/g into chitosan treated cotton fabrics. Instead, the complexing of the treated cotton samples with copper and zinc salts was examined. The copper salt solutions gave blue fabrics confirming easily that complexing or chelation had occurred. There are implications for dyeing cotton making use of these groups but this was not investigated.

Keyword : Chitosan, Cotton fabric, Chelation, Acetic acid, Citric acid, Maleic acid, Copper (II) sulphate, Copper (II) acetate.


Muzzarelli, R.A.A., Natural Chelating Polymer, Pergamon Press, New York, 1973

Shanmugapriya, A., Ramya,R., Ramasubramaniam,S., and Sudha,P .N., Studies on removal of Cr (VI) and Cu (II) ions using chitosan grafted polyacrylonitrile, Applied Science

Research, 3 (3), 2011, p424-435.

Bamgbose,J.T., Adewuyi,S., Bamgbose,O., and Adetoye,A.A., Adsorption kinetics of cadmium and lead by chitosan, African Journal of Biotechnology, Vol.9(17), 2010, p2560-

Onsoyen, E. and Skangrud, O., J.

Chem. Tech. Biotechnology, 49 (1990),

Lasko, C.L., Pesic, B.M. and Oliver, D.J.,

J. Appl. Polym. Sci., 48, (1993), 1965.

Hadi,A.G., Study of heavy metal Mn2+ adsorption by sythesized chitosan, British Journal of Science, Vo.6(2),

, p127-130.

Shanmugapriya,A., Hemalatha,M.,

Scholastica, B. and Augustine Arul Prasad,T., Adsorption studies of Lead (II) and nickel (II) ions on chitosan-G- polyacrylonitrile, Der Pharma Chemica, 5(3), 2013, p141-155.

Muhaemin, M., Chelating ability of crab shell particles and extracted acetamido groups (chitin and chitosan) from Portunus sp to lead (Pb2+), Journal of Coastal Development, Vol 9, No. 1, Oct 2005, p1-7.

Shin Juang, R., Chin Wu, F., and Ling Tseng, R., Adsorption removal of copper (II) using chitosan from simulated rinse solutions containing chelating agents, Water Research, Vol 33, Issue 10, Jul 1999, p2403-2409

Laksono, E.W., Prodjosantoso, A.K. and Ikhsan, J., A complex surface formation model on chitosan adsorption to metals, FMIPA (Pendidikan Kimia), 2006.

Jiang, W., Tao, T., Liao, Z., Removal of heavy metal from contaminated soil with chelating agents, Open Journal of Soil Science, 1, 2011, p70-76.

Schlick, S., Macromolecules, 19 (1986), 192.

Domard, A., Int. J. Biol. Macromol., 9, 1987, 333

Muzzarelli, R.A.A. and Turbetini, O., Microchem. Acta, 5 (1970), 892.

Koshijima, T., Tanak, R., Muraki, E., Yamada, A. And Yaku, F., Cellulose Chem. Technol., 7, 1973, 197.

Hussein, M.H.M., El-Hady, M.F., Sayed, W.M., Hefni, H., Preparation of some chitosan heavy metal complexes and study of its properties, Polymer Science, Ser.A, Vol. 54, No.2, 2012, p113-124.

Roberts, G.A.F., Chitin Chemistry, Macmillan, London, 1992.

Uraki, Y. and Tokura, S., J. Macromol. Sci. Chem., A25 (1988), 1427.

Muzzarelli, R.A.A. Tamfani, F., Emanuelli, M. And Mariotti, A., Carbohydr. Res., 107, 1982, 199-214.

Nud’ga, L.A., Plisko, E.A. and Danilov, S.N., Zh. Obshsh. Khim., 43, 1973, 2752; Hirano, S., Matsuda, N., Miura, O. And Iwaki, H., Carbohydr. Res., 71, 1979, 339.

Hall, L.D. and Yalpani, M., Carbohydr. Res. 83, 1980, C5-C7.

Hovey, R.J., O’ Connell, J.J. and Martell, A.E., J.Am. Chem. Soc., 81 (1959), 3189.

Muzzarelli, R.A.A., Chitin, Pergamon: Oxford, 1977, Chapter 6.

Blair, H.S. and Ho, T.C., J. Chem. Tech. Biotechnol., 31 (1980), 6.

Eiden, C.A., Jewell, C.A. and Wightman, J.P ., J. Appl. Polym. Science, 25, (1980), 1587.

Qin, Y ., PhD Thesis, Department Textile Industries, The University Leeds, 1990

Habibie, S., PhD Thesis, Department of Textile Industries, The University of Leeds, 1996.

Lu, F., PhD Thesis, Department of

Textile Industries, The University of Leeds, April 1992.