SINTESIS KOPOLIMER CANGKOK KITOSAN-g-POLI(ASAM AKRILAT) SEBAGAI ADSORBEN KATION Cu2+, Pb2+, DAN Cr3+

  • James Sibarani Program Magister Kimia Terapan, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana, Bali-Indonesia
  • Arisma Damayanti Program Studi Kimia, Fakultas MIPA Universitas Udayana, Bali-Indonesia
  • Irdhawati Irdhawati Program Studi Kimia, Fakultas MIPA Universitas Udayana, Bali-Indonesia
  • Manuntun Manurung Program Studi Kimia, Fakultas MIPA Universitas Udayana, Bali-Indonesia
  • Ni Made Puspawati Program Studi Kimia, Fakultas MIPA Universitas Udayana, Bali-Indonesia

Abstract

ABSTRAK. Sintesis dan karakterisasi kopolimer cangkok poli(asam akrilat) (PAA) pada kitosan (CS) {CS-g-PAA} sebagai penukar kation sudah dilakukan melalui kopolimerisasi redoks menggunakan cerium (IV)-sulfat sebagai inisiator. Konsentrasi dari monomer asam akrilat divariasikan pada konsentrasi 10%(v/v) dan 20% (v/v) dan juga variasi berat inisiator sebesar 0,1; 0,5; dan 1,0 gram. Data spektroskopi FTIR mengkonfirmasi keberhasilan proses grafting. Berdasarkan data spektroskopi FTIR, munculnya puncak serapan baru pada bilangan gelombang 1759,06 cm-1 (C=O).Persen grafting optimum diperoleh dan kopolimer yang disintesis menggunakan 0,5 gram cerium (IV) sulfat diperoleh sebesar 1066,18% (b/b) dan 2434,11% (b/b) berturut-turut untuk konsentrasi monomer 10% (v/v) dan 20% (v/v). pH optimum untuk adsorpsi Pb2+ dan Cr3+ adalah 6 sedangkan untuk yang diperoleh terhadap ion Cu2+ adalah pada pH 8. Kapasitas adsorpsi tertinggi yang diperoleh terhadap ion Cu2+ adalah 52,6 mg/g dan memungkinkan untuk meningkat. Tingginya kapasitas adsorpsi CS-g-PAA terhadap Cu2+ menunjukkan bahwa kopolimer ini merupakan penukar kation yang sangat baik


Kata kunci: hidrogel, kopolimerisasi grafting, kitosan-g-poli(asam akrilat), penukar kation, redoks


ABSTRACT. The synthesis and characterization of graft copolymer poly (acrylic acid) (PAA) in chitosan (CS) {CS-g-PAA) as cation exchanger were carried out  by redox copolymerization using cerium (IV)-sulfate as an initiator. Concentrations of acrylic acid monomers were varied at concentrations of 10% (v/v) and 20%(v/v) as well as the variation of the initiator of 0.1; 0.5; and 1.0 gram. Analysis of the PAA was conducted using FTIR spectroscopy to confirm the process of grafting which revealed the existence of new absorption peak at 1759.06 cm-1 assigned to C = O. The optimum percentage of grafting and the synthesized of copolymer used 0.5  gram cerium (IV) sulfate were 1066,18%(b/b) and 2434,11%(b/b) respectively for the concentration of monomer in 10%(v/v) and 20%(v/v). The optimum pH for adsorption of Pb2+ and Cr3+ at 6, whereas for Cu2+ ion at pH 8. The highest adsorption capacity obtained on Cu2+ ions is 52.6 mg/g and that’s possible to increase. The higher capacity of CS-g-PAA adsorption to Cu2+ indicates that CS-g-PAA is an excellent cation exchanger.


 

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Published
2018-12-24
How to Cite
SIBARANI, James et al. SINTESIS KOPOLIMER CANGKOK KITOSAN-g-POLI(ASAM AKRILAT) SEBAGAI ADSORBEN KATION Cu2+, Pb2+, DAN Cr3+. CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry), [S.l.], v. 6, n. 2, p. 98-105, dec. 2018. ISSN 2302-7274. Available at: <https://ojs.unud.ac.id/index.php/cakra/article/view/46699>. Date accessed: 07 oct. 2022.

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