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All Journal Sainteknol : Jurnal Sains dan Teknologi Journal of Fibers and Polymer Composites
Novriadi, Dwi
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Computer Science & IT Materials Science & Nanotechnology

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Surface Modification of Abaca Fibers with Glutaraldehyde for Improved Mechanical Properties of Injection Molded PLA Biocomposites Harsanti, Dini; Novriadi, Dwi; Pratama, Ade
Journal of Fibers and Polymer Composites Vol. 3 No. 1 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i1.129

Abstract

This research is based on the importance of finding crosslinking agents that are environmentally friendly and able to improve the performance of the interfacial area between natural fibers and their polymer matrix. Poly(lactic acid) PLA composites containing 20 wt.% abaca (Musa Textilis) fibers were manufactured by injection molding. The composite specimens contained surface-modified abaca fibers with 5 wt.% glutaraldehyde (GA) as a cross-linking agent were examined in this experiment. The SEM was applied to assess the morphological surface of the abaca fibers, while FTIR analysis was performed to investigate the chemical components of abaca fibers. The mechanical characteristics of the PLA/Abaca fiber biocomposites were examined using flexural, tensile, and Izod impact tests. The results confirmed that the modulus of elasticity and Young’s modulus were observed to increase by 40% and 37% respectively. Meanwhile the tensile strength and the flexural strength increased by 26% and 15% respectively. PLA/Abaca fiber biocomposite that had been treated with glutaraldehyde had better mechanical qualities than pure PLA biocomposite.
Analysis of Voids and Porosity and Its Influence on The Quality of Syntactic Foam Composites Munawar, Maulana Dzaki; Hakim, Moh Luqman; Wijaya, Ade Mundari; Novriadi, Dwi
Sainteknol : Jurnal Sains dan Teknologi Vol 21, No 2 (2023): December 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sainteknol.v21i2.49530

Abstract

The syntactic foam composite possesses both light and strong qualities. Syntactic foam composite is commonly employed as a buoyant lighting material in amphibious aircraft due to its excellent foaming capability. Composite syntactic foam is utilized because of its ability to efficiently support material drying while maintaining excellent structural strength (mechanical characteristics). In order to ascertain the syntactic compound density, one can determine the composite density based on the ASTM D790 standard. This involves evaluating the porosity calculation and doing a literature review to establish the characteristics of the void. The density of a syntactic foam composite is determined by the density of the filling matrix (microballoon k15), the percentage of porosity, and the identification of voids. The use of the K15 microballoon material will reduce the overall density of the composite because of its substantial structure. The number of small cavities within the composite syntactic foam is indicated by the porosity ratio.Nevertheless, not all apertures present in syntactic foam composites can be classified as k15 microballoon structures, as the composite manufacturing process may result in the formation of air bubbles that become trapped within the composite. The function has no return value. The excessive presence of voids can significantly reduce the density and mechanical strength, leading to a drop in the overall quality of the syntactic foam composite. Porosity analysis is crucial for assessing the quality of drying in syntactic foam composites. The study involved assessing the composite density of syntactic foam with varying concentrations of 0-50% w/w of the k15 microballoon material, following the ASTM D790 standard. The porosity value of the foam was subsequently determined and studied. The findings of this study can serve as a robust point of reference for analyzing the correlation between the density of the reference material and the composite syntactical foam's relative density in different variations.
Co-Authors Ade Pratama Dini Harsanti, Dini Hakim, Moh Luqman Munawar, Maulana Dzaki Wijaya, Ade Mundari