An effective method to identify the type and content of α‐olefin in polyolefine copolymer by Fourier Transform Infrared–Differential Scanning Calorimetry

作者：Qing, Zhang; Ping, Chen; Xiaoli, Xie; Xianwu, Cao

来源：Journal of Applied Polymer Science, 2009, 113(5): 3027-3032.

DOI：10.1002/app.30249

<jats:title>Abstract</jats:title><jats:p>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<jats:sup>−1</jats:sup>. According to the peak location of 770, 784, and 895 cm<jats:sup>−1</jats:sup>, 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<jats:sub>2</jats:sub> mol fraction) = −0.331+135.5/<jats:italic>T</jats:italic><jats:sub><jats:italic>m</jats:italic></jats:sub>.

• 出版日期2009-9-5
• 单位华南理工大学