Associate Professor CHAN Lai Wah

BSc (Pharm)(Hons), PhD, National University of Singapore

Department of Pharmacy, National University of Singapore
18 Science Drive 4, Singapore 117543
Tel: +65 6516 3506
Fax: +65 6779 1554
Research Group

Teaching Activities in NUS

  • Dosage Form Design II
    Dosage Form Design II discusses the properties, formulation, manufacture and performance of liquid, semisolid and percutaneous drug delivery systems.
  • Pharmaceutical Microbiology and Industrial Pharmacy
    Pharmaceutical Microbiology and Industrial Pharmacy give an insight of the nature of microorganisms and their significance in pharmacy.

These two modules also discuss factors affecting microbiological quality of products and methods of controlling microbial growth.

Research Interests

The primary goal of my research interests is to develop quality drug delivery systems.


This is achieved through my pursuit in two closely connected research areas. One of them is concerned with the study of different techniques of microencapsulation using various types of synthetic and natural polymers. The core materials studied include drug substances, oils and microorganisms. This technology, which can be employed to protect and to control the release of the encapsulated material, has tremendous application in the pharmaceutical and allied industries. My research team developed an emulsification technique for microencapsulation using the natural polysaccharide, sodium alginate. This technique has been successfully applied to microencapsulation using other types of natural colloids.


Ongoing research is directed at understanding the effects of different modes of crosslinking using various types of agents. The other research area focuses on microbiological quality of pharmaceutical systems. The studies focus on the influence of formulation and physical factors on the antimicrobial activity of preservatives and the efficacy of different modes of sterilization.