1. College of Chemistry and Chemical Engineering; Southwest Petroleum University; Chengdu 610500 People's Republic of China
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University; Chengdu 610500 People's Republic of China
3. Polymers Research Group, Institute for Frontier Materials; Deakin University, Locked Bag 2000; Geelong Victoria 3220 Australia