Skripsi

STUDI FABRIKASI DAN ANALISIS PENGARUH SUHU TERHADAP PROSES SINTERING DINGIN KOMPOSIT HA-HDPE

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Bovine bone waste offers significant potential as a source of hydroxyapatite (HA), a biomaterial with chemical characteristics similar to human bone. This study aims to fabricate HA-HDPE composites through the cold sintering process while examining the effect of temperature variations on densification and microstructural characteristics. The cold sintering method was selected due to its ability to significantly reduce processing temperatures compared to conventional sintering, ensuring the preservation of HA crystal stability. In this work, HA calcined at 900°C was mixed with HDPE in three compositions, then compacted at 350 MPa with temperature variations of 140°C, 145°C, and 150°C. Characterization included Archimedes density testing, SEM morphological observation, and XRD phase identification. The results indicate that increasing the sintering temperature does not always improve densification. The 90%HA-10%HDPE composition at 140°C exhibited the best performance, achieving a density of 2.30 g/cm³ and the lowest porosity of 21.6%, indicating the most compact and homogeneous structure. In contrast, increasing the HDPE fraction to 15% led to higher porosity up to 41.3% and the formation of micro-cracks due to poorer particle distribution. XRD analysis confirmed that no phase degradation occurred across all temperature variations, while SEM revealed improved particle bonding in compositions with higher HA content. Overall, the cold sintering method proved effective in producing HA-HDPE composites with stable crystal phases, good densification, and suitable microstructure for spinal implant applications. This study also highlights the potential of transforming organic waste into high-value biomaterials through environmentally friendly processing

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Detail Information

Series Title

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Call Number

T1895322025

Publisher

Indralaya : Prodi Teknik Mesin, Fakultas Teknik Universitas Sriwijaya., 2025

Collation

xxxi, 75 hlm.; ilus.; 29 cm

Language

Indonesia

ISBN/ISSN

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Classification

620.118 07

Content Type

Text

Media Type

unmediated

Carrier Type

-

Edition

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Subject(s)

Prodi Teknik Mesin
Material Komposit — Fabrikasi

Specific Detail Info

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Statement of Responsibility

KA

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