| Determining the degree of grafting for poly（vinylidene fluoride） graft-copolymers using fluorine elemental analysis |
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| 作者姓名： | YU Yang ZHANG Bowu YANG Xuanxuan DENG Bo LI Linfan YU Ming LI Jingye |
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| 作者单位： | YU Yang,ZHANG Bowu,YANG Xuanxuan(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China ;Graduate University of Chinese Academy of Sciences,Beijing 100049,China);DENG Bo,LI Linfan,YU Ming,LI Jingye(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China) |
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| 基金项目： | Supported by National Natural Science Foundation of China （10875164 10805070）;; the Knowledge Innovation Project of Chinese Academy of Sciences Shanghai Municipal Commission for Science and Technology （10ZR1436700） and SRF for ROCS of the Ministry of Education |
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| 摘 要： | Acrylic acid (AAc) and styrene (St) were grafted onto poly(vinylidene fluoride) (PVDF) powder or membrane samples by pre-irradiation graft copolymerization.The grafted chains were proved by FT-IR spectroscopy analysis.The degree of grafting (DG) of the grafted PVDF was determined by fluorine elemental analysis (FEA) method,and was compared with the DGs determined by weighing method,acid-base back titration method and quantitative FT-IR method.The results show that the FEA method is accurate,convenient and universal,especially for the grafted polymer powders.
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| 关 键 词： | Fluorine elemental analysis Degree of grafting Poly(vinylidene fluoride) Pre-irradiation graft copolymerization |
Determining the degree of grafting for poly(Vinylidene fluoride) graft-copolymers using fluorine elemental analysis |
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| YU Yang,ZHANG Bowu,YANG Xuanxuan,DENG Bo,LI Linfan,YU Ming,LI Jingye.Determining the degree of grafting for poly(Vinylidene fluoride) graft-copolymers using fluorine elemental analysis[J].Nuclear Science and Techniques,2011,22(1):25-29. |
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| Authors: | YU Yang ZHANG Bowu YANG Xuanxuan DENG Bo LI Linfan YU Ming LI Jingye |
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| Affiliation: | YU Yang1,2 ZHANG Bowu1,2 YANG Xuanxuan1,2 DENG Bo1 LI Linfan1 YU Ming1 LI Jingye1, 1Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China 2Graduate University of Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | Acrylic acid(AAc)and styrene(St)were grafted onto poly(vinylidene fluoride)(PVDF)powder or membrane samples by pre-irradiation graft copolymerization.The grafted chains were proved by FT-IR spectroscopy analysis.The degree of grafting (DG)of the grafted PVDF was determined by fluorine elemental analysis(FEA)method,and was compared with the DGs determined by weighing method,acid-base back titration method and quantitative FT-IR method.The results show that the FEA method is accurate,convenient and universal,especially for the grafted polymer powders. |
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| Keywords: | Fluorine elemental analysis Degree of grafting Poly(vinylidene fluoride) Pre-irradiation graft copolymerization |
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