Determining the degree of grafting for poly(vinylidene fluoride) graft-copolymers using fluorine elemental analysis

Yang YU; Bowu ZHANG; Xuanxuan YANG; Bo DENG; Linfan LI; Ming YU; Jingye LI

doi:10.13538/j.1001-8042/nst.22.25-29

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Determining the degree of grafting for poly(vinylidene fluoride) graft-copolymers using fluorine elemental analysis

RADIOCHEMISTRY, RADIOPHARMACEUTICALS AND NUCLEAR MEDICINE | Updated：2021-01-29

- Determining the degree of grafting for poly(vinylidene fluoride) graft-copolymers using fluorine elemental analysis
- Nuclear Science and Techniques Vol. 22, Issue 1, (2011)
- Affiliations：
  
  1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China
- Author bio：
  
  Corresponding author. E-mail address: jingyeli@sinap.ac.cn
- Funds：
- DOI：10.13538/j.1001-8042/nst.22.25-29
  CLC：
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Yang YU, Bowu ZHANG, Xuanxuan YANG, et al. Determining the degree of grafting for poly(vinylidene fluoride) graft-copolymers using fluorine elemental analysis. [J]. Nuclear Science and Techniques 22(1):25-29(2011)
DOI：

Yang YU, Bowu ZHANG, Xuanxuan YANG, et al. Determining the degree of grafting for poly(vinylidene fluoride) graft-copolymers using fluorine elemental analysis. [J]. Nuclear Science and Techniques 22(1):25-29(2011) DOI： 10.13538/j.1001-8042/nst.22.25-29.

摘要

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 ,DG,s 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.

关键词

Keywords

Fluorine elemental analysisDegree of graftingPoly(vinylidene fluoride)Pre-irradiation graft copolymerization

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