Pengaruh Konsentrasi H₂SO₄ pada Metode Hidrolisis Asam Sintesis Nanopartikel Selulosa Berbasis Limbah Kertas Konvensional

Abstrak

Basically, paper waste has the potential to be used as a source of cellulose with a fairly high content of 64.84%. The synthesis of cellulose nanoparticles can be carried out using an acid hydrolysis process by adding H2SO4 solution to produce nanocellulose measuring 150-200×10-20 nm. This research aims to determine the characteristics of paper waste cellulose nanoparticles on the effect of varying H2SO4 concentration treatments. The best variety of cellulose nanoparticle samples promises many benefits in the development of material technology as an environmentally friendly material. Cellulose is extracted using the delignification method which is then carried out by an acid hydrolysis process with varying H2SO4 concentrations of 1 M, 3 M, 5 M, and 7 M to reduce the size of the cellulose particles into cellulose nanoparticles. Sample variations were tested using FTIR, PSA and SEM to determine the particle content and size including the morphology of the cellulose nanoparticle samples. Based on the results of this research, cellulose extraction based on paper waste using the delignification method achieved cellulose purity of up to 96.5%. Nanocellulose is synthesized using sulfuric acid (H2SO4) with a trend showing that the higher the acid concentration, the smaller the fiber particle size will be. The best paper waste nanocellulose samples were shown at varying 5M acid concentrations with nanocellulose particle sizes reaching 223.43 nm.