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      Sintesis dan Aplikasi Selulosa-g-poliakrilamida dari Serabut Ampas Sagu sebagai Fase Diam Kromatografi Kolom

      Synthesis and Application of Cellulose-g-Polyacrylamide from Sago Waste Fiber as Column Chromatography Stationary Phase.

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      Date
      2011
      Author
      Setyorini, Andria
      Irawadi,Tun Tedja
      Farid, Muhammad
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      Abstract
      Sago waste fiber is one of the lignocellulose-containing materials. Cellulose can be modified to improve its properties, through grafting-crosslinking technique. The modification products will have molecular structure that can be applied in separation technology. The study was conducted in 3 steps: cellulose isolation, cellulose-g-acrylamide synthesis, and application of the products as stationary phase in column chromatography, respectively. The isolated cellulose contain 0.37% lignin. Cellulose-g-polyacrylamide synthesis was carried out with 3 different crosslinker amounts 0.1, 0.5, and 1.0 g in 15 g of the isolated cellulose. Infrared spectrum proved that acrylamide had been succesfully grafted to the cellulose. Three compositions of cellulose-g-acrylamide product were then applied on the column chromatography to separate xanthorrizol from Curcuma xanthoriza extract. Based on thin layer chromatography profile, xanthorrizol was obtained in the first hexane fraction which is also evidence by high performance liquid chromatography. The best column for xanthorrizol separation was cellulose-g-polyacrylamide with 0.5 g of crosslinker.
       
      Serabut ampas sagu merupakan salah satu bahan yang mengandung lignoselulosa. Selulosa dapat dimodifikasi untuk memperbaiki sifat-sifatnya, salah satunya dengan teknik pencangkokan-taut-silang. Produk modifikasi akan memiliki struktur makromolekular yang dapat diaplikasikan untuk teknologi pemisahan. Tahapan penelitian yang dilakukan terdiri atas isolasi selulosa, sintesis selulosa-g-poliakrilamida, dan aplikasi produk sebagai fase diam dalam kromatografi kolom. Isolasi selulosa menghasilkan isolat dengan kadar lignin 0.37%. Sintesis fase diam selulosa-g-poliakrilamida diaplikasikan dengan ragam jumlah penaut-silang 0.1, 0.5, dan 1.0 g. Pencirian menggunakan FTIR membuktikan telah terjadi pencangkokan akrilamida ke selulosa. Ketiga diaplikasikan pada kromatografi kolom untuk memisahkan xantorizol dari ekstrak kasar temu lawak. Berdasarkan profil kromatografi lapis tipis, xantorizol berada pada fraksi heksana pertama dan dibuktikan pula dengan kromatografi cair kinerja tinggi. Kolom terbaik untuk pemisahan xantorizol ialah selulosa-g-poliakrilamida dengan penaut-silang sebanyak 0.5 g.
       
      URI
      http://repository.ipb.ac.id/handle/123456789/54151
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      • UT - Chemistry [2295]

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