1. Institute of Textiles and Clothing; The Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong
2. The Hong Kong Polytechnic University Shenzhen Base; Shenzhen China
3. Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
4. Department of Polymer Science & Engineering; University of Science & Technology of China; Hefei 230026 China