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Annealing effect in porous cellulose acetate membranes
Institution:1. Condensed Matter Science and Technology Institute & School of Science, Harbin Institute of Technology, Harbin 150080, China;2. State Key Laboratory of New Ceramic and Fine Processing & School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;3. National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, China;4. Department of Mathematics & Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA;1. Shaanxi Key Laboratory of Industrial Automation, School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723001, China;2. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic and Information Engineering, Xi''an Jiaotong University, Xi''an 710049, China;3. Henan Key Laboratory of Photovoltaic Materials, College of Physics and Materials Science, Henan Normal University, Xinxiang 453000, China
Abstract:On the basis of separation curves the pore size and pore dize distribution of cellulose acetate ultrafiltration membranes are determined. The change of these parameters by annealing is discussed and from the correlation between pore size and annealing temperature up to 75°C conclusions are drawn as to the structure of salt rejecting membranes annealed at 90°C.
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