1. The Key Laboratory of Leather Chemistry and Engineering Ministry of Education Sichuan University Chengdu 610065 China
2. Institute for Biomass and Function Materials & National Demonstration Centre for Experimental Light Chemistry Engineering Education Shaanxi University of Science and Technology Xi'an 710021 China
3. Department of Chemical & Materials Engineering The University of Auckland Auckland 1010 New Zealand
4. Department of Leather & Fiber Technology University of Veterinary & Animal Sciences Lahore 54000 Pakistan