1. Key Lab for Fine Processing of Resources and Advanced Materials of Hunan Province Hunan Normal University Changsha Hunan China
2. Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material Huaihua University Huaihua Hunan China
3. National and Local Joint Engineering Laboratory for New Petro‐chemical Materials and Fine Utilization of Resources Hunan Normal University Changsha Hunan China