1. Centre for Polymers from Renewable Resources, Collage of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
2. Sino-Singapore International Joint Research Institute, Knowledge City, Guangzhou, 510663, China
3. Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto M5S 3G8, Canada