THE USE OF CITRIC ACID MODIFIED BACTERIAL CELULLOSE AS AN ENVIROMENTALLY FRIENDLY ADSORBENT

Diah Mardiana, Ani Mulya Suryani, Budi Kamulyan, Nur Lailatul Rahma

Abstract


Abstract

The use of nata de coco as an ester cellulose raw material through esterification using  various of carboxylic acids has been widely conducted. In this study, it was used citric acid with three carboxyl groups.  This aim research were to determine the optimum reactant composition and to compare the  cellulose citrate properties toward bacterial cellulose and commercial ester cellulose. Esterification at mass ratio of nata : citric acid were 1 : 1 up to 1 : 9 were conducting at temperature of 150oC. The optimum ester cellulose produced, were then characterized based on the FTIR spectrophotometry, hydrophobicity and degree of crystallinity. Furthermore, the surface area has been determined in order to find out its potency as an adsorbent .The result revealed that reaction using citric acid has affect on chemical structure and hydrophobicity. The increase of hydrophobicity and degree of crystallinity was influenced by citric acid added. On the other hand, it was obtained that cellulose citrate could be develop as an adsorbent.

Keyword: cellulose, esterification, citric acid, adsorbent 


Full Text:

PDF

References


Budi Kamulyan, 2014, Modifikasi Bacterial Selulosa menggunakan Asam Sitrat dengan Katalis Dibutil timah oksida, Laporan Penelitian, FMIPA-UB

Feng-Yuan Huang, 2012, Thermal properties dan Thermal degradation of Cellulose Tri-Stearat, Polymer, 40:1012-1014

Halib, N., Iqbal., M.C., Amin,M., dan Ahmad, I., 2012, Physicochemical Properties and Characterization of Nata de Coco from Local Food Industries as a Source of Cellulose, Sains Malaysiana 41(2): 205–211

Krystynowics, 2005, Molecular Basis of Cellulose Biosynthesis Dissapearance in Submerged Culture of Acetobacter Xylinium. Jurnal Acta Biochimica Polonica, 52 (3) : 691-698.

Nagel, M.C.V dan Heinze,T., 2012, Study about the Efficiency of Esterification of Cellulose under Homogenous Conditions: Dependence on the Chain Length and Solvent, Lenzinger Berichte, 90 : 85-9

Reddy, N., and Yang, Y., 2010, Citric Acid Cross-Linking of Starch Films, Food Chemistry, 118, 702–711.

Thanh, D.H and Nhung, H.L., 2009, Cellulose Modified with Citric Acid and Its absorption of Pb2+ and Cd 2+ ion, ECSOC-13.

Van de Burg, Y. E., Bergsma, M., J., Bleeker, I. P., Mijland, P. J. H. C., Kamerling, J. P. and Vliegenthart, J. F. G., 2000, Structural Studies on Methylated Starch Granules. Reviews. Starch/Starke, 52:40-43




DOI: http://dx.doi.org/10.21776/10.21776/ub.jeest.2018.005.01.2

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.