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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains CHEMPUBLISH JOURNAL Unri Conference Series: Community Engagement Journal of Bioprocess Chemical and Environmental Engineering Science Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) JOURNAL OF COMMUNITY SERVICES PUBLIC AFFAIRS Jurnal Masyarakat Mengabdi Nusantara
Sri Helianty
Universitas Riau
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Journal : CHEMPUBLISH JOURNAL

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PELAPISAN HIDROKSIAPATIT- POLYCAPROLACTONE PADA PERMUKAAN STAINLESS STEEL 316L DENGAN METODE DIP COATING Fadli, Ahmad; Hariz, Abdul; Helianty, Sri; Rifaldi, Muhammad
Chempublish Journal Vol. 8 No. 2 (2024): Chempublish Journal
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v8i2.30842

Abstract

Stainless steel 316L is a metal that can be used for bone implants but exhibits low biocompatibility. The low biocompatibility can lead to inflammation, infection, or rejection within the body's tissue system. It is coated with hydroxyapatite-polycaprolactone to enhance the biocompatibility of stainless steel 316L. This study aims to examine the effects of stirring time, stirring speed, and the appropriate hydroxyapatite-polycaprolactone ratio on the shear strength of hydroxyapatite-polycaprolactone using the dip coating method and to determine the empirical model for the resulting shear strength of the hydroxyapatite-polycaprolactone layer. Hydroxyapatite and polycaprolactone were mixed using acetone and stirred at a speed of 150 rpm for 20 hours. Then, the stainless steel 316L substrate was immersed in the suspension and dried at 56°C for 1 hour. The process conditions optimization in this study employed a 2k modeling approach. The empirical shear strength model in this research is represented as y = -216.9 + 36.42A + 1.426B + 14.43C - 0.2345AB - 2.380AC - 0.08943BC + 0.01468AB*C, with an R2 value of 0.99. The variables with the most significant influence on shear strength, ranked from largest to smallest, are the HA-PCl ratio (A), followed by the two-way interaction between the HA-PCl ratio (A) and stirring speed (B), the three-way interaction between the HA-PCl ratio (A), stirring speed (B), and stirring time (C), followed by the two-way interaction between the HA-PCl ratio (A) and stirring time (C), stirring time (C), stirring speed (B), and the two-way interaction between stirring speed (B) and stirring time (C). The highest shear strength of the hydroxyapatite layer was achieved at a HA-PCl ratio of 5:1.5, stirring speed of 150 rpm, and stirring time of 20 hours, with a value of 5.71 MPa
Behaviour of SS-316L Hydroxyapatite Coated in Simulated Body Fluids Helianty, Sri; Fadli, Ahmad; Silalahi, Yunita Magdalena; Barus, Yohana Dwi Nita
Chempublish Journal Vol. 9 No. 2 (2025): Chempublish Journal (July - December)
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v9i2.44633

Abstract

Hydroxyapatite (HA) is a calcium phosphate mineral that closely resembles the inorganic component of natural bone. The incorporation of polycaprolactone (PCL) into HA enhances its mechanical strength, flexibility, and bioresorbability, producing composites with excellent biocompatibility and bioactivity in simulated body fluid (SBF). This study investigates the bioactivity and degradation behaviour of HA/PCL coatings on SS 316L stainless steel substrates. The relationships among coating thickness, shear strength, crystallinity, and pH variation in SBF were systematically examined. HA/PCL coatings were prepared using the dip-coating method and immersed in SBF at 37 °C for 7, 14, 21, and 28 days. Crystallinity and degradation characteristics were analysed using X-ray diffraction (XRD) and weight loss measurements. The results showed that HA/PCL-coated SS 316L exhibited noticeable weight loss after seven days of immersion due to Ca²⁺ ion release from the composite. Extended immersion led to increased HA crystallinity, indicating continued apatite formation and confirming the coating’s bioactive and biocompatible nature. Overall, the HA/PCL composite coating effectively enhances the bioactivity and provides controlled degradation of metallic implants, demonstrating strong potential for orthopaedic and dental biomedical applications
Co-Authors Adrianto Ahmad Ahmad Fadli Andi Dahliaty Andi Dahliaty Andi Muhammad s, Andi Muhammad Anisa Fitri Bahruddin Barus, Yohana Dwi Nita Desadria, Renny Eko Karmiza Fajril Akbar Halida Sophia Hari Rionaldo Hariz, Abdul Intan Fitra Martin, Intan Fitra Irwanda, Juni Iwara, Bangkit Swadi Khafid Ali Mahdi, Khafid Ali Khairat Lita Darmayanti Luthfi, Alif Maria Peratenta Mhd Taufik Kurniawan Muhamad Fajri Muhammad Rivai Mukhlisoh Arifah Nini Reflinda R Nirwana Nirwana Nurliati, Ivanna Nurul Khumaida Revika Wulandari Rifaldi, Muhammad Riko Naldo Saputra Rio Nanda Novendra Rispiandi, Fadli Saputra, Noris Selsa Idillah Silalahi, Yunita Magdalena Sri Rezeki Muria Syaktia Aryuda Titania Tjandrawati Nugroho Wijaya, Deni Yuana Nurulita Yuana Nurulita Yulva Gemy Yusnimar Sahan Z Zulfansyah Zuchra Helwani Zulfansyah Zulfansyah Zultiniar Zultiniar Zuqni Meldha