Determination of gelation dose of a vinylidene chloride/acrylonitrile copolymer irradiated with gamma-rays by a spectrophotometric technique |
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| Institution: | 1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;2. Fundamental Industry Training Center, Tsinghua University, Beijing 100084, China;3. Key Laboratory of Materials Processing and Mold, Ministry of Education, Zhengzhou University, Zhengzhou 450002, China;4. Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing 100081, China;1. School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia;2. Center for Future Materials, University of Southern Queensland, Toowoomba 4350, Australia;3. Department of Chemistry, Tsinghua University, Beijing 100084, China;1. School of Materials Science and Engineering, Tianjin Municipal Key Lab of Advanced Fiber and Energy Storage Technology, Tiangong University, Tianjin, 300387, China;2. School of Textiles Science and Engineering, Tiangong University, Tianjin, 300387, China;3. School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China |
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| Abstract: | The gelation dose of a vinylidene chloride (VDC)/acrylonitrile (AN) random copolymer irradiated with γ-rays in vacuum is first determined by conventional techniques, such as viscometry and solubility. The onset of gelation was determined to be 5.8 Mrad for this copolymer of composition 20% AN/80% VDC. The same gelation dose is also determined by a spectrophotometric method which is based on the recording of u.v.-vis spectra of solutions of this copolymer in THF. The advantages of this new technique for determination of gelation dose over the conventional methods are discussed. |
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