C11.

Project title: Degradation Behaviour of Polymeric Materials

Recently there has been an increasing interest in the development of biodegradable polymers owing to the growing problem of the waste disposal of plastics. Most synthetic plastics do not decompose naturally, which has caused serious problems of the pollution environment by waste polymers. Biodegradable polymers and their blends are thus developed for applications related to food packaging and agriculture. Aliphatic polyesters such as polycaprolactone (PCL) and poly(lactic acid) degrade through hydrolysis, and such hydrolytic degradation occurs mostly in the amorphous region of the polymers. In addition, PCL can be mis cible with many polymers such as polyamides, poly(vinyl chloride) and polycarbonate. In the project, binary and ternary blends PCL/PA and PCL/PC/PA will be prepared by the compression moulding. The morphology, thermal property, degradation, static tensile and dynamic mechanical behaviour of the blends will be determined using the scanning electron microscopy, differential scanning calorimetry, immersion test, tensile measurement and dynamic mechanical analysis.

Supervisor: Prof S C Tjong (aptjong@cityu.edu.hk)

Suitable for: M.Phil. and Ph.D.