Gamma Radiation Dose Variation of Hydroxyapatite/Ultra High Molecular Weight Polyethylene (UHMWPE) Nano Composite as Orthopedic Implant Material

Abstract:

A study was conducted on gamma-ray modified nanoHydroxyapatite (HAp)/Ultra High Molecular Weight Polyethylene (UHMWPE) composite as orthopedic implant material. This study aims to characterize the effect of gamma radiation on the physical, chemical, and mechanical properties of UHMWPE/HAp composites so that they can be used as orthopedic implant materials. The composite film was irradiated with gamma rays at a dose variation of 0 kGy, 15 kGy, and 30 kGy and a dose rate of 8 kGy/hour. Composites before and after radiation were tested for physical, chemical and mechanical properties. Physical properties test includes surface microstructure analysis; chemical properties test includes phase and functional group analysis; mechanical properties test, including hardness, tensile strength, and elongation at break. The results obtained are gamma radiation from IRKA changes the chemical properties of composites in terms of crosslinking and the number of radicals, as well as mechanical properties in terms of hardness, tensile strength, and elongation at break with different changes from the initial state before radiation. The best mechanical properties were obtained at 25% HAp composition in a dose of 30 kGy with a hardness (shore A) of 97.17; tensile strength of 18.15 MPa; and elongation at break of 17.85%, so that the UHWMPE/HAp composite has potential as an orthopedic implant material following the Ultimate Tensile Strength (UTS) of cancellous bone ranging from 10-20 MPa.

• Periodical: Key Engineering Materials (Volume 1025)
• Pages: 65-72
• DOI: https://doi.org/10.4028/p-dr7zEq
• Online since: October 2025
• Authors: Fitriyatul Qulub*, Hendita Nur Maulida
• Keywords: Gamma Radiation, HAp, Mechanical Properties, Orthopedic Implant, UHMWPE

References

[1] Zhang M., Matinlinna JP. 2011. The Effect of Resin Matrix Composition on Mechanical Properties of e-Glass Fiber-Reinforced Composite for Dental Use. Hong Kong: University of Hong Kong. Publisher: VSP.

[2] Pruitt La, Simis KS, Bistolfi A, Bellare A. 2005. The Role of Microstructure On The Fatigue and Fracture Properties of Medical Grade Ultra High Molecular Weight Polyethylene. International Congress on Fracture, ICF

[3] Wang S, Ge S. 2007. The Mechanical Property and Tribological Behaviour of UHMWPE: Effect of Molding Pressure. Wear. 263(7-12):949-956.

DOI: 10.1016/j.wear.2006.12.070

[4] Dirasutisna DT. 2010. Effect of Radiation on Tensile Strength of Polyethylene. In: Samian, YY Yhosep Gita, editor. The Role of Physics and its Applications as Capital for the Development of National Independence in the Fields of Industry and Medicine. National Seminar on Physics II; 2010 Jul 17; Surabaya, Indonesia. Surabaya: Department of Physics Universitas Airlangga. pp C21-C27.

[5] Crowley J, Chalivendra VB, Rice J. A2008. Dynamic Constitute Behavior of UHMWPE-HAP Nanocomposites. Proceedings of the XIth International Congress and Exposition on Experimental and Applied Mechanics

[6] Arifin NL. 2012. Pengaruh Radiasi Gamma Terhadap Sifat Mekanik UHMWPE Untuk Tibial Tray. Yogyakarta: Sekolah Tinggi Teknologi Nuklir BATAN.

DOI: 10.24817/jkk.v34i2.1863

[7] Purnamasari. 2013. Sintesis dan Karakterisasi Komposit HDPE-HAp Termodifikasi Sinar Gamma [Skripsi]. Sukabumi: Program Studi Kimia Fakultas Sains dan Teknologi Universitas Muhammadiyah Sukabumi.

DOI: 10.29408/porkes.v6i1.14060

[8] Kusumawati DR. 2012. Pengaruh Radiasi Gamma Terhadap Sifat HDPE Untuk Tibial Tray [skripsi]. Yogyakarta: Sekolah Tinggi Teknologi Nuklir BATAN.

[9] Retno W. 2011. Modifikasi Permukaan Polimer UHMWPE dan HDPE Dengan Iradiasi Gamma Untuk Meningkatkan Kekuatan Mekanik Tibial Tray [skripsi]. Bogor): Departemen Fisika Institut Pertanian Bogor

DOI: 10.6066/jtip.2015.26.2.171

[10] Ilie & Setnescu. 2009. Radiation Induced Aging Effects in Polymeric Cable Insulators at CERN. Compilation of the DSC and ATR-FTIR data on irradiated Cern Cables. European Organization for Nuclear Research Organisation Européenne Pour La Recherche Nucléaire. CERN TE –VSC

DOI: 10.1163/1570-6664_iyb_sim_org_39285

[11] Muntamah. 2011. Sintesis dan Karakterisasi Hidroksiapatit dari Cangkang Kerang Darah (Anadara granosa, sp) [Tesis]. Bogor: Sekolah Pascasarjana, Institut Pertanian Bogor.

DOI: 10.24252/teknosains.v13i1.7832