Fourier Transform Rheology of Dilute Immiscible Polymer Blends: A Novel Procedure To Probe Blend Morphology

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• 作者：Claudia Carotenuto ; Massimiliano Grosso ; Pier Luca Maffettone
• 刊名：Macromolecules
• 出版年：2008
• 出版时间：June 24, 2008
• 年：2008
• 卷：41
• 期：12
• 页码：4492 - 4500
• 全文大小：179K
• 年卷期：v.41,no.12(June 24, 2008)
• ISSN：1520-5835

文摘

Morphological characterization of polymer blends is important for tailoring final properties of plastic products based on these systems. A novel technique to estimate the characteristic dimension and size distribution of a polymer blend is proposed and tested. The procedure is based on Fourier transform rheology (FTR) and large-amplitude oscillatory shear experiments and exploits their sensitivity to microstructural properties. The inference protocol requires that the experimental data are analyzed with a model capable of describing the blend dynamics. This novel technique is applicable to immiscible polymer blends of practical industrial interest. The procedure is successfully tested on a model system (an immiscible polymer blend of PDMS in PIB) by treating the polymer blends with the Maffettone–Minale model coupled with the Batchelor theory.