天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

ChemicalBook >> journal list >> International Journal of Chemical Engineering and Applications >>article

Synthesis and Characterization of Carboxymethyl Cellulose (CMC) from Water Hyacinth Using Ethanol-Isobutyl Alcohol Mixture as the Solvents

Published:1 January 2014 DOI: 10.7763/IJCEA.2014.V5.347
A. H. Saputra,?Linnisa Qadhayna,?A. B. Pitaloka

Abstract

? Abstract—Water hyacinth, a free-floating aquatic weed originating from South America has become a major floating weed of tropical and subtropical regions of the world. The plant has the tendency to regenerate from seeds and fragment allowing rapid increase in plant population. Water hyacinth is however a fiber that is rich in its cellulosic compounds, which can be derivated into somewhat multifunctional properties. Carboxymethyl Cellulose (CMC) is a derivated cellulose that is used in food products as a thickener agent or non-food products such as detergents, paints, and others. The research has investigated further on how one would synthesize CMC from water hyacinth as well examining the characterization of the CMC samples that is originated from the plant. The production of CMC involves four main processes: the isolation of alpha-cellulose from the water hyacinth and the synthesis by the alkali-catalyzed reaction (alkalization) of cellulose with chloroacetic acid (carboxymethylation) and finally the purification of the CMC itself to remove undesirable compounds. In this research, the variations are comprised of the NaOH added (5 M - 35 M) during alkalization and the ratio of the solvent between isobutanol and ethanol (ratio 80:20, 50:50 and 20:80) thus fifteen samples are obtained. The characterization is based on two testing methods: FTIR and Degree of Substitution (DS). During FTIR test, it is proven that CMC is produced in the experiment. This is verified from the spectrum transmitting 1400 cm-1 1600 cm-1 indicating ether and carboxyl functional group consecutively. On the other hand, the highest DS is obtained in sample CMC-28-10 with a value of 1.76 with the highest purity of 93.24.

Substances (4)

Related products

Similar articles

IF:4.7

Recent Developments of Carboxymethyl Cellulose.

Neural Regeneration Research Md Saifur Rahman,?Md Saif Hasan,etc Published: 20 April 2021
IF:7.7

Preparation and properties of edible active films of gelatin/carboxymethyl cellulose loaded with resveratrol

Neural Regeneration Research Cong Sun, Yu-Sheng Wang,etc Published: 1 December 2024