Different Oxidation Treatments on Polystyrene (PS) Microspheres by using an Ultraviolet/Ozone (UVO3) System

Mohd Azmir Arifin; Maizirwan Mel; Nurhusna Samsudin; Yumi Zuhanis Has-Yun Hashim; Hamzah Mohd. Salleh; Iis Sopyan

Mohd Azmir Arifin Department of Biotechnology Engineering, Faculty of Engineering, International Islamic University Malaysia,Jalan Gombak, 50728, Kuala Lumpur,Malaysia; Faculty of Engineering Technology,Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300, Gambang, Kuantan, Pahang,Malaysia

Maizirwan Mel Department of Biotechnology Engineering, Faculty of Engineering, International Islamic University Malaysia,Jalan Gombak, Kuala Lumpur,Malaysia

Nurhusna Samsudin Department of Biotechnology Engineering, Faculty of Engineering, International Islamic University Malaysia,Jalan Gombak, Kuala Lumpur,Malaysia

Yumi Zuhanis Has-Yun Hashim DepartmentofBiotechnologyEngineering,FacultyofEngineering,InternationalIslamicUniversityMalaysia, Jalan Gombak, Kuala Lumpur, Malaysia; International Institute for Halal Research and Training, International Islamic University Malaysia, Jalan Gombak, Kuala Lumpur, Malaysia

Hamzah Mohd. Salleh DepartmentofBiotechnologyEngineering,FacultyofEngineering,InternationalIslamicUniversityMalaysia, ; International Institute for Halal Research and Training, International Islamic University Malaysia, Jalan Gombak, Kuala Lumpur, Malaysia

Iis Sopyan Department of Manufacturing and Materials Engineering, Faculty of Engineering, International Islamic University Malaysia,Jalan Gombak, 50728, Kuala Lumpur,Malaysia

Oxidation is a common physical treatment used to render the surface of polystyrene suitable for cell adhesion and spreading. In this work, the effects of oxidation of polystyrene (PS) microspheres by three different treatments; oxidation by ozone aeration only, UV irradiation only or by the combination of both (UVO3), by using a self-fabricated UVO3 system were investigated. Results expressed in carboxylic acid (COOH) concentrations on the surface of microspheres revealed that, the treatment by UVO3 yielded the highest concentration. Presence of atomic oxygen species in UVO3 treatment has contributed to higher COOH concentration.