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An effective method to identify the type and content of α‐olefin in polyolefine copolymer by Fourier Transform Infrared–Differential Scanning Calorimetry
Author(s) -
Zhang Qing,
Chen Ping,
Xie Xiaoli,
Cao Xianwu
Publication year - 2009
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.30249
Subject(s) - differential scanning calorimetry , fourier transform infrared spectroscopy , copolymer , olefin fiber , polyethylene , materials science , ethylene , polymer chemistry , fourier transform , analytical chemistry (journal) , chemical engineering , chemistry , composite material , organic chemistry , polymer , catalysis , mathematics , thermodynamics , physics , mathematical analysis , engineering
A new method for identification of ethylene/α‐olefin copolymer was established by Fourier Transform Infared (FTIR)–Differential Scanning Calorimetery (DSC) in this article. DSC and FTIR spectroscopy techniques were used to analysis the type and content of α‐olefin in polyolefine copolymer. FTIR was available to identify the structures of polyethylene and copolymers of ethylene with different α‐olefins. The type of polyethylene can be determined by the peak position of 1378 and 1369 cm −1 . According to the peak location of 770, 784, and 895 cm −1 , the type of α‐olefin can also be determined. DSC method was used to decide the position of melting peaks. The quantitative investigation of the content of α‐olefin in polyethylene was calculated by the formula: −ln(CH 2 mol fraction) = −0.331+135.5/ T m . © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009