Crystallinity And Function Group of Nanocomposite BC/CuO With Various Graphene Jibril Maulana(a), Heru Suryanto(b*), Aminnudin(b)
a) Master Program of Mechanical Engineering, Graduate School, Universitas Negeri Malang, Jl. Semarang 5, Malang, East Java, Indonesia
b) Center of Excellence for Cellulose Composite (CECCom), Department of Mechanical Engineering, Universitas Negeri Malang, Jl. Semarang 5, Malang 65145, East Java, Indonesia
*heru.suryanto.ft[at]um.ac.id
Abstract
Bacterial cellulose (BC) is composed of straight-chain glucose polymers that bonded at the β--1,4 position. Bacterial cellulose has three-dimensional structural matrix formed by hydrogen bonds. Graphene can increase the ability of CuO and stability of BC/CuO. Graphene has large specific surface area and also can affect crystallinity and molecular bonding of BC. Objective of this research is investigate effect of addition various graphene (10, 30, and 50%wt CuO) on the BC/CuO nanocomposites properties. Methods synthesis BC was using pineapple peel extraxt in fermentation for 10 days. BC was homogenized by High-Pressure Homogenizer (HPH). An ultrasonic homogenizer was used to mix BC/CuO/Graphene composite solution, then dried using freeze dry to make porous membrane. Membrane were analyzed using XRD and FTIR to determine effect of graphene addition on the crystallinity and functional groups of BC/CuO. Results show that addition of CuO and graphene decreasing crystallinity of BC/CuO/ Graphene, which is adding more graphene make lower peak from control (88.85%) until BC/CuO with addition graphene 50% (79.78%) of Cr. The FTIR results indicated the addition of graphene can affect on O-H bonds and increasing C-C bond have been see changing number of transmittances in the range of 3400 cm-1 and 1172 cm-1.
