PENENTUAN DERAJAT ESTERIFIKASI DENGAN METODE BASE LINE PADA SINTESIS ALDIMIN KITOSAN ASETAT MELALUI REAKSI ESTERIFIKASI DARI ALDIMIN KITOSAN DENGAN ASETAT ANHIDRIDA

  • Mifta Churohma
  • Daniel Tarigan
  • Erwin Akkas

Abstract

Determination degree of esterification with the baseline on the synthesis method aldimine chitosan acetate by esterification of aldimine chitosan with acetic anhydride has done. In this research, chitosan modified by chemical being aldimine chitosan acetate. Synthesis aldimine chitosan acetate produced by the esterification reaction between aldimine chitosan with acetic anhydride. The result of FT-IR analysis of aldimine chitosan acetate showed in wavenumbers 3448.72 cm-1, which indicated stretching vibration hydroxyl group -OH. Vibration absorption wave numbers  1735.93 cm-1 indicated carbonyl group C = O, ester and backed group C-O-C with wavenumbers 1033.85 cm-1. vibration absorption in wavenumbers 1651.07 cm-1 indicated the presence of C = N. Degree of esterification or degree of acetylation (DA) in aldimine chitosan acetate assign value 82.85%.

References

[1] Bastman, S. 1989. Studies on Degradation and Extraction of Chitinand Chitosan From Prawn Shells. England : The Queen’s University of Belfast.
[2] Taranathan dan Kittur. 2003. Chitin The Unduspitud Biomolecule of Great Potential. Critical Reviews in Food Science and Nutrition, 43,1 : ProQuestMedical Library.
[3] Nurmariana, O.D.S. 2010. Pembuatan Bahan Surfaktan Kosmetika Melalui Modifikasi Kimia Dari Kitosan Menjadi Kitosan Palmitat. Tesis. Medan : Universitas Sumatera Utara.
[4] Febrianti, N. S. 2013. Sintesis N-Maleoil Kitosan Melalui Reaksi Amidasi Antara Kitosan Dengan Anhidrida Maleat. Skripsi. FMIPA Kimia. Medan : Universitas Sumatera Utara.
[5] Guinesi, L.S dan Edar Tadeu Gomes Cavalheiro. 2006. The Use Of DSC Curves To Determine The Acetylation Degree Of Chitin/Chitosan Samples. Thermochimica Acta 444 (2006) 128-133.
[6] Sastrohamidjojo, H. 1990. Spektroskopi. Yogyakata : Liberty.
[7] Baxter, A, M. Dillon, K.D.A Taylor, G.A.F. Roberts. 1992. Macromol. Int.J.Biol. 14. 166.
Published
2017-03-01
How to Cite
CHUROHMA, Mifta; TARIGAN, Daniel; AKKAS, Erwin. PENENTUAN DERAJAT ESTERIFIKASI DENGAN METODE BASE LINE PADA SINTESIS ALDIMIN KITOSAN ASETAT MELALUI REAKSI ESTERIFIKASI DARI ALDIMIN KITOSAN DENGAN ASETAT ANHIDRIDA. JURNAL ATOMIK, [S.l.], v. 2, n. 1, p. 151-155, mar. 2017. ISSN 2549-0052. Available at: <http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JA/article/view/358>. Date accessed: 24 sep. 2017.
Section
Artikel