Optical and Electrical Properties of OPEFB Alkali Cellulose and PVA Composite

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Published Oct 29, 2024
https://doi.org/10.55043/jfpc.v3i2.211
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Vol. 3 No. 2 (2024): Journal of Fibers and Polymer Composites

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Rima Fitria Adiati
IPB University
https://orcid.org/0000-0002-6511-3159
Siti Nikmatin
IPB University
Irmansyah
IPB University
Nazwa Nuradilla Putri
IPB University
Siti Altirana Anandiwa
IPB University

Abstract

The Oil Palm Empty Fruit Bunch (OPEFB) is a byproduct of oil palm plantation and abundantly available in Indonesia. It is necessary to process the biomass waste into a more useful and higher value substances, such as semiconductor. This research aims to extract alpha-cellulose from OPEFB and process it into alkali cellulose - Polyvinyl Alcohol (PVA) composite for potential photodetector application. PVA acts as mechanical binding agent with 5%, 7.5%, and 10% concentration. Spectroscopy-based measurement is used to characterize the composite’s optical properties, while LCR meter is used to measure the electrical properties such as conductivity and capacitance.  Using UV-Vis spectroscopy with wavelength range of 400-900 nm, it is observed that alkali cellulose with 5% PVA has the highest optical absorbance. Using Kubelka-Munk equation and Tauc plot, the energy gap of the composite was calculated, with the lowest energy gap is 2,769 eV at 5% PVA. Using LCR meter between frequency of 5 Hz to 5 MHz, one can measure conductivity (specific conductance) of a material, where highest obtained electrical conductivity is 2,65×1004 S/cm, which satisfy typical value of semiconductor characteristic. Measurement of Impedance also shows that composite with 7.5% PVA has the highest impedance at lower frequencies, then decreases to almost zero at frequency higher than 5000 Hz. These results demonstrate the potential of alkali cellulose-PVA composite as semiconductor sensors. These findings suggest the potential for developing low-cost, sustainable electronic devices.

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Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Author Biographies

Siti Nikmatin, IPB University

Associate Professor

Department of Physics, IPB University

Bogor, Indonesia

Irmansyah, IPB University

Associate Professor

Department of Physics, IPB University

Bogor, Indonesia

Nazwa Nuradilla Putri, IPB University

Bachelor Student

Department of Physics, IPB University

Siti Altirana Anandiwa, IPB University

Bachelor Student

Department of Physics, IPB University

How to Cite
Adiati, R. F., Nikmatin, S., Irmansyah, Putri, N. N., & Anandiwa, S. A. (2024). Optical and Electrical Properties of OPEFB Alkali Cellulose and PVA Composite. Journal of Fibers and Polymer Composites, 3(2), 91–100. https://doi.org/10.55043/jfpc.v3i2.211

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