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This Author published in this journals
All Journal Hayyan Journal Journal of Physics Education: Review and Research (JPERR)
Wahyuna Nur
Universitas Negeri Makassar
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Medicine & Pharmacology

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A Comparative Study of Nanocellulose Isolation Methods from Palm Fiber for Functional Material Applications Sukmawati Said; Ni Wayan Mega Savira Utami; Wahyuna Nur
Hayyan Journal Vol. 3 No. 1 (2026): February
Publisher : Education and Talent Development Center of Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/hayyan.v3i1.4818

Abstract

The high cellulose content and abundance of oil palm fiber make it an exceptionally promising sustainable source for nanocellulose production in advanced material science. This study executes a thorough comparative analysis of different isolation strategies covering chemical, mechanical, and enzymatic approaches to derive nanocellulose specifically for functional material development. We aim to clarify how each distinct isolation path dictates the final structural integrity, morphology, and thermal stability of the extracted nanocellulose. By synthesizing data through a systematic literature review, this research evaluates critical metrics such as the crystallinity index and fiber diameter, which directly influence the performance of functional composites. Our analysis reveals that while chemical techniques like acid hydrolysis are superior for achieving high crystallinity, mechanical processes like high-pressure homogenization provide enhanced aspect ratios despite their heavy energy demands. Additionally, enzymatic methods offer a greener pathway, though they often trade speed for environmental benefits. Ultimately, this comparative review serves as a strategic roadmap for researchers to select the most appropriate isolation method based on intended applications, ranging from high-strength bio-composites to flexible electronic components.
A Review of Coconut Shell-Based Activated Carbon as a Context for Teaching Material and Thermal Physics Wahyuna Nur
Journal of Physics Education : Review and Research Vol. 3 No. 1 (2026): Journal of Physics Education: Review and Research (JPERR)
Publisher : Physics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/r9jsga92

Abstract

The study of physics is often considered abstract because it is not sufficiently linked to real-world phenomena in everyday life. Therefore, contextual learning resources are needed that can connect physics concepts to the surrounding environment. One topic with potential for development in physics education is the production of biomass-based activated carbon through physical activation methods. This article aims to review various studies on the production of activated carbon using physical activation and to analyze its relationship with physics concepts. The research method employed was a literature review of national and international articles on carbonization, activation using steam, CO₂, and microwaves, as well as the characterization of activated carbon. The results of the study indicate that the activated carbon production process involves concepts of heat, thermodynamics, gas diffusion, material structure, and adsorption. Physical activation using steam or CO₂ at temperatures of 750–800°C results in better pore development and adsorption capacity. Additionally, characterization using SEM, BET, FTIR, and XRD can serve as an introduction to modern physics instrumentation. This study indicates that the production of biomass-based activated carbon has the potential to serve as a contextual learning resource in physics education through project-based learning and the STEM approach.
Co-Authors Ni Wayan Mega Savira Utami Sukmawati Said