Engineering Seminar Series 20_2010: Influence of concentration and crystallization temperature on the mechanical properties of chitosan-hydroxyapatite microfibres

Dr Goh Kheng Lim, senior lecturer from School of Engineering, MUSC

Date: 2010-10-28
Time: 12:00 to 13:00
Venue: 9-5-04


Hydroxyapatite possesses appropriate osteoconductivity and biocompatibility for hard-tissue replacement implants but suffers from brittleness. One approach to overcome this problem is to incorporate hydroxyapatite (HA) crystallites into a polymer matrix, such as chitosan, to yield a hydroxyapatite-chitosan (HC) composite. Here, this talk will discuss the synthesis of a novel HC composite and an investigation of the sensitivity of the elastic properties of the fibre to (1) HA concentration and (2) crystallization temperature (which is known to influence the morphology of the crystals).

About the Speaker

Dr Kheng-Lim Goh is a Chartered Physicist and Scientist. His PhD degree (University of Aberdeen) was in the area of Bioengineering. He has worked as a research assistant for Prof. Malcolm Pope to study the biomechanics of occupational low back pain at the Liberty Work Safe Centre (Aberdeen, 2001-2) and as a post-doc to investigate the mechanisms of ageing in extracellular matrix (ECM) of connective tissues (Stirling & Cardiff University, 2002-4). In 2005, he moved to Singapore to take up a faculty position as an Assistant Professor at the School of Chemical & Biomedical Engineering, Nanyang Technological University. In 2009, he was appointed as a Senior Lecturer in Mechanical Engineering at Monash University Malaysia. His current research interests include basic and applied studies on fibre composites, particularly on the development of biocomposites for biomedical applications. Dr Goh is a member of the editorial boards of the Journal of Mechanics in Medicine and Biology and the Journal of Medical Imaging and Health Informatics.