Paper number 684
|FT-IR STUDIES ON IMIDIZATION AND END GROUP REACTION BEHAVIORS OF A PHENYLETHYNYL TERMINATED IMIDE OLIGOMER|
Donghwan Cho1 and Lawrence T. Drzal2
1Department of Polymer Science and Engineering, Kumoh National University of Technology, Kumi, Kyungbuk 730-701 Korea
2Composite Materials and Structures Center, Michigan State University
East Lansing, MI 48824-1226 U.S.A.
|Summary||Most characteristic FT-IR absorption bands including the phenylethynyl end group occurring via imidization and cure during dynamic and isothermal heat treatments of LaRC PETI-5 were clearly resolved and assigned in the present study. The imidization and phenylethynyl end group reaction behavior of phenylethynyl terminated imide oligomers (LaRC PETI-5) with a number average molecular weight of 2500 g/mol has been extensively interpreted in terms of the disappearance and appearance of several characteristic absorption peaks. This study also measures the extent of imidization and the activation energy of cure reaction of this material. The results give some information on temperature- and time-dependency of the cure of LaRC PETI-5, which may be useful for determining the processing conditions necessary for use as a high temperature fiber sizing material.
||Keywords|| phenylethynyl terminated imide oligomer, LaRC PETI-5, imidization, end group reaction, activation energy, FT-IR.
Theme : Matrices ; Polymer Matrices
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