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      Synthesis and Saponification of Cellulose-g-Polyacrylamide from Cellulose of Sago Waste Fibers

      Sintesis dan Saponifikasi Selulosa-g-Poliakrilamida dari Selulosa Serabut Ampas Sagu

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      Date
      2012
      Author
      Irma, Ade
      Irawadi, Tun Tedja
      Farid, Muhammad
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      Abstract
      Sago waste fibers is wasted from starch extraction of sago and contain 42% of cellulose. The cellulose can be modified by grafting and crosslinking method by using acrylamide monomer to produce cellulose-g-polyacrylamide. Cellulose-g-polyacrylamide was synthesized with 50:50 cellulose and monomer ratio and 2 gram of crosslinker. Saponification could increase the polarity of the grafting and crosslinking product. Saponification were carried out in 3 different times, namely 1, 2, and 3 hours. Analysis of infrared spectrum and nitrogen content showed that some of the -CONH2 groups of the synthesis products were transformed into –COOH groups after saponification. This functional group conversion increased the water absorption capacity. Solvent resistance analysis between ethyl acetate solvent and cellulose-g-polyacrylamide was saponification 2 hours showed the best result with change in refractive index value of 0.00. These result showed that cellulose-g-polyacrylamide was saponification 2 hours has the potential to be used as the the stationary phase column chromatography.
       
      Serabut ampas sagu merupakan salah satu limbah yang dihasilkan dari ekstraksi pati sagu dan mengandung 42% selulosa. Selulosa ini dapat dimodifikasi dengan metode pencangkokan dan penautan-silang menggunakan monomer akrilamida dan penaut-silang metilena-bis-akrilamida menghasilkan produk selulosa-g-poliakrilamida. Selulosa-g-poliakrilamida disintesis dengan nisbah selulosa dan monomer 50:50 dan 2 gram penaut-silang. Saponifikasi dapat meningkatkan kepolaran produk pencangkokan dan penautan-silang. Saponifikasi dilakukan dengan 3 ragam waktu, yaitu 1, 2, dan 3 jam. Analisis spektrum inframerah dan kadar nitrogen menunjukkan bahwa sebagian gugus –CONH2 hasil sintesis berubah menjadi gugus –COOH setelah disaponifikasi. Perubahan gugus fungsi ini meningkatkan kapasitas absorpsi air. Uji daya tahan pelarut antara etil asetat dan selulosa-g-poliakrilamida tersaponifikasi 2 jam menunjukkan hasil terbaik dengan perubahan indeks biasnya 0.00. Hasil ini menunjukkan bahwa selulosa-g-poliakrilamida tersaponifikasi 2 jam memiliki potensi untuk dijadikan fase diam kromatografi kolom.
       
      URI
      http://repository.ipb.ac.id/handle/123456789/60526
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