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All Journal Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society
Subyakto Subyakto
Research and Development Unit for Biomaterials Indonesian Institute of Sciences (LIPI) Jl. Raya Bogor km. 46 Cibinong, Bogor 16911
Agriculture, Biological Sciences & Forestry

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Effects of Temperature and Time of Carbonization on the Properties of Bamboo (Dendrocalamus asper) Carbon Subyakto Subyakto; Ismail Budiman; Gustan Pari
Wood Research Journal Vol 3, No 2 (2012): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2012.3.2.68-73

Abstract

Lignocellulosic materials such as wood and bamboo have special characteristics when carbonized at high temperature. For example the electrical conductivity of wood and bamboo increases when carbonized at temperature of 800°C or higher. This property can be used for developing smart materials such as fiber reinforced concrete which has function as sensors for load, damage or temperature. In this experiment, betung bamboo (Dendrocalamus asper) was carbonized at different temperatures and times of carbonization. The purpose of this experiment was to observe the effect of temperature and time of carbonization on the properties of bamboo carbon. Bamboo in the form of particles were carbonized at temperature of 400°C for 300 min and continued at temperatures of 700, 800, or 900°C for 45, 60, or 90 min. Carbon properties such as yield, fixed carbon, volatile matters, and ash content were determined. Structure properties were studied by X Ray Diffraction (XRD), morphological properties were observed by Scanning Electron Microscope (SEM), and electrical conductivity was measured using LCR meter. Result shows that increasing temperature and time of carbonization have significant effects on the structure and other properties of bamboo carbon. Carbonization at temperature of 800°C for 60 min was considered as an optimum condition.
Development of Cement-Coir Carbon Fiber Composites with Damage Self Detection Capability Ismail Budiman; Subyakto Subyakto; Akhiruddin Maddu; Gustan Pari
Wood Research Journal Vol 3, No 2 (2012): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2012.3.2.74-80

Abstract

Research on the manufacture of cement-carbon composite materials using carbon fiber from coconut coir fiber has been performed. Carbonization was carried out at two phases. First, it was carbonized at a temperature of 400°C for 300 min and continued by the second phase at a temperature of 800°C for 60 min. The structures of carbon fiber was measured using X-Ray Diffraction (XRD) while the sample surface analysis was carried out using Scanning Electron Microscope (SEM) and the electrical conductivity of samples was measured using LCR (Inductance Capasitance and Resistance) meter. Three carbon types (carbon without treatment, carbon soaked in 10% and 20% solution of potassium hydroxide (KOH)) were used to manufacture cement-carbon composites. Three levels of carbon content of 0.5, 0.75 and 1.0% by weight of cement were used. Results showed that the cement-carbon composite added with soaked carbon in 20% solution of KOH at 1.0% carbon content has the best properties of compressive strength (24.94 ± 1.24 MPa), modulus of rupture (MOR) (5.23 ± 0.47 MPa) and damage self-detection (load at the first crack = 21.04 N).
Effects of Temperature and Time of Carbonization on the Properties of Bamboo (Dendrocalamus asper) Carbon Subyakto Subyakto; Ismail Budiman; Gustan Pari
Wood Research Journal Vol 3, No 2 (2012): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2012.3.2.68-73

Abstract

Lignocellulosic materials such as wood and bamboo have special characteristics when carbonized at high temperature. For example the electrical conductivity of wood and bamboo increases when carbonized at temperature of 800°C or higher. This property can be used for developing smart materials such as fiber reinforced concrete which has function as sensors for load, damage or temperature. In this experiment, betung bamboo (Dendrocalamus asper) was carbonized at different temperatures and times of carbonization. The purpose of this experiment was to observe the effect of temperature and time of carbonization on the properties of bamboo carbon. Bamboo in the form of particles were carbonized at temperature of 400°C for 300 min and continued at temperatures of 700, 800, or 900°C for 45, 60, or 90 min. Carbon properties such as yield, fixed carbon, volatile matters, and ash content were determined. Structure properties were studied by X Ray Diffraction (XRD), morphological properties were observed by Scanning Electron Microscope (SEM), and electrical conductivity was measured using LCR meter. Result shows that increasing temperature and time of carbonization have significant effects on the structure and other properties of bamboo carbon. Carbonization at temperature of 800°C for 60 min was considered as an optimum condition.
Development of Cement-Coir Carbon Fiber Composites with Damage Self Detection Capability Ismail Budiman; Subyakto Subyakto; Akhiruddin Maddu; Gustan Pari
Wood Research Journal Vol 3, No 2 (2012): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2012.3.2.74-80

Abstract

Research on the manufacture of cement-carbon composite materials using carbon fiber from coconut coir fiber has been performed. Carbonization was carried out at two phases. First, it was carbonized at a temperature of 400°C for 300 min and continued by the second phase at a temperature of 800°C for 60 min. The structures of carbon fiber was measured using X-Ray Diffraction (XRD) while the sample surface analysis was carried out using Scanning Electron Microscope (SEM) and the electrical conductivity of samples was measured using LCR (Inductance Capasitance and Resistance) meter. Three carbon types (carbon without treatment, carbon soaked in 10% and 20% solution of potassium hydroxide (KOH)) were used to manufacture cement-carbon composites. Three levels of carbon content of 0.5, 0.75 and 1.0% by weight of cement were used. Results showed that the cement-carbon composite added with soaked carbon in 20% solution of KOH at 1.0% carbon content has the best properties of compressive strength (24.94 ± 1.24 MPa), modulus of rupture (MOR) (5.23 ± 0.47 MPa) and damage self-detection (load at the first crack = 21.04 N).
Co-Authors Akhiruddin Maddu Gustan Pari Ismail Budiman