1. Department of Chemical and Materials Engineering, University of Alberta Edmonton, Alberta, T6G 1H9, Canada
2. Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, P. R. China
3. Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
4. Hard X-Ray MicroAnalysis BL, Canadian Light Source, 44 Innovation Boulevard, Saskatoon, SK S7N 2V3, Canada