Lestari, Fitra Ayu
(2021)
Ekstraksi Selulosa Dari Daun Kapas Untuk Kegunaan Sebagai Bahan Pengental Pada Injeksi Air.
Other thesis, Universitas Islam Riau.
Abstract
polymer can increase the viscosity of water so that it can increase the area of sweep efficiency and is a method that is quite promising. Biopolymers are polymers whose main parts are derived from living organisms. The main constituents of biopolymers are polysaccharides. Cellulose is a polydacaride derivative and is an organic compound found in almost all plants. Cotton leaf has about 21.69% fiber, of which 1 leaf fiber contains up to 70% cellulose. The purpose of this study was to determine the feasibility of polymers formed from cotton leaves by comparison with commercial xanthan gum biopolymers. processing cotton leaves into raw materials for polymers has several procedures such as cotton leaf starch formulation, extraction of ascorbic acid, manufacture of nanocellulose, characterization tests such as SEM and FTIR, compatibility tests, rheological tests, salinity tests and thermal tests. FTIR test showed cellulose formed after extraction. However, the cellulose formed was not nano-sized because the SEM test results showed that the smallest cellulose size was 28.9 m. Impurity particles precipitate obtained during compatibility testing. In this study, rheological tests were carried out on samples of KLC, KL and Xantan Gum. When the concentration of biopolymer is added, the viscosity of the sample will increase. The increase in the average viscosity of KLS, Kl and Xantan Gum samples, respectively, was 0.28 cp, 0.5 cp and 11.12 cp. in other tests there was a decrease in viscosity along with the higher shear rate, salinity and temperature. The decrease in viscosity is caused by the destruction of cellulose particles due to physical and chemical processes.
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