Sintesis Fase Diam Selulosa-g-AAm dengan Berbagai Kadar Penaut-silang sebagai Media Separator Xantorizol dari Ekstrak Temu Lawak

Abstract

Rice straw in Indonesia is abundant and its cellulose can be modified to alter its characteristic. One of modification is by grafting-cross-linking method. The products will have a molecular structure that can be applied in separation technology. This research consists of three stages. The first stage was cellulose isolation, followed by cellulose-g-acrylamide synthesis at various amount of cross-linker (0.1, 0.5, and 1.0 g), and the last stage was application of the products as stationary phase. The success of isolation process was indicated by 0.81% residual lignin and increasing of alpha cellulose to 31.22%. Grafting-cross-linking process was indicated by increase of N and decreases of water absorption capacity in line with the increase of cross-linker amount. Functional group analysis showed some the characteristic bands, especially in wave number of 1674 cm-1, showing C═O of amide. All products were then applied on the column chromatography as stationary phase for separating xanthorrhizol. Based on thin layer chromatography profile, xanthorrhizol was always found in hexane fraction. However, all of copolymer tend to show similar performances. All samples can be reused twice for separation process.