supported by the National Natural Science Foundation of China(21776236,21676225);Natural Science Foundation of Hunan Province(2018JJ2384);the Scientific Research Foundation of Huaihua University(HHUY2017-08);Collaborative Innovation Centre of New Chemical Technologies for Environmental Benignity and Efficient Resource Utilization
supported by the National Natural Science Foundation of China(21776236);Natural Science Foundation of Hunan Province(2018JJ2384);Scientific Research Foundation of Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol(PVA)Fiber Material of Huaihua University(HGY201709);the Key Laboratory of Rare Earth Optoelectronic Materials and Devices(HX150302)