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The preparation and analysis of chlorinated ethylene vinyl acetate copolymer as coating film in gas‐solid phase
Author(s) -
Jing Zhao,
Liu Lijuan,
Zhang Shukai,
Zhao Jiruo,
Feng Ying
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.41093
Subject(s) - chlorine , vinyl chloride , crystallinity , vinyl acetate , ethylene vinyl acetate , copolymer , materials science , differential scanning calorimetry , crystallization , coating , ethylene , gel permeation chromatography , polymer chemistry , gas chromatography , infrared spectroscopy , chemical engineering , chemistry , organic chemistry , polymer , catalysis , chromatography , composite material , physics , engineering , thermodynamics
In this article, the feasibility of preparing chlorinated ethylene vinyl acetate copolymer (CEVA) in gas–solid phase is investigated. Furthermore, the structure of the chlorination product and its performance as a coating material are also analyzed. Both the molecular structure and crystallinity of the product are well studied with various characterization methods, including 1 H‐NMR, Fourier transform infrared, gel permeation chromatography, differential scanning calorimeter, and so forth. The results show that the chlorination of EVA in gas–solid phase is feasible and the chlorine content of CEVA can be made over 60%. It is also found that when the chlorine content is low, chlorination can easily occur in ethylene section but rarely happens in vinyl acetate section. Nevertheless, when the chlorine content of CEVA rises over 35%, CH in the vinyl acetate section is also found chlorinated. The removal of hydrogen chloride is induced during chlorination, producing double bonds in the main chain. Besides, the trace of CCl 2 structure can also be found in the chain of CEVA. After chlorination, the crystallization will change and is negatively correlated with chlorine content. As the film forming material for coating, CEVA has its best performance with 50% chlorine content. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 41093.