Effect of Cure Conditions on the Generated Morphology and Viscoelastic Properties of a Poly(acrylonitrile鈥揵utadiene鈥搒tyrene) Modified Epoxy鈥揂mine System

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• 作者：Jyotishkumar Parameswaran Pillai ; J眉rgen Pionteck ; R眉diger H盲脽ler ; Christophe Sinturel ; Viju Susan Mathew ; Sabu Thomas
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：February 15, 2012
• 年：2012
• 卷：51
• 期：6
• 页码：2586-2595
• 全文大小：651K
• 年卷期：v.51,no.6(February 15, 2012)
• ISSN：1520-5045

文摘

The curing behavior, phase morphology, and dynamic mechanical characteristics of an epoxy system based on the diglycidyl ether of bisphenol A (DGEBA) and 4,4鈥?diaminodiphenylsulfone (DDS), modified with different amounts of poly(acrylonitrile鈥揵utadiene鈥搒tyrene) (ABS), were investigated by employing differential scanning calorimetry (DSC), field-emission scanning electron microscopy (FESEM), and dynamic mechanical thermal analysis (DMTA). The effects of different curing conditions on the generated morphologies and viscoelastic properties were evaluated. The amounts of ABS in the epoxy blends were 3.6, 6.9, 10, and 12.9 wt %. The rate of the curing reaction decreased with increasing thermoplastic content and with decreasing curing temperature. Morphological analysis revealed a phase-separated morphology for the blend systems. The storage modulus (E鈥?, loss modulus (E鈥?, and tan 未 values of the systems were measured as functions of temperature and are discussed based on the morphological behavior of the epoxy blends with different amount of ABS.