Assessment of the Doi-Ohta theory for co-continuous blends under oscillatory flow

作者: I. Vinckier , H. M. Laun

DOI: 10.1122/1.1410373

关键词: Materials scienceDynamic mechanical analysisOscillatory flowMorphology (linguistics)Polymer blendLarge strainElastic modulusRheologyAmplitudeThermodynamics

摘要: Predictions of the semiphenomenological Doi–Ohta theory for rheology and morphology immiscible blends are compared to experimental data a 40/60 blend PMMA/PαMSAN with co-continuous structure. Since actually was developed blends, published comparisons on droplet–matrix not considered as adequate. It is verified how polymeric constituents contribute response it shown phenomenological parameters can be determined. Subsequently, these used predict evolution rheological under oscillatory flow. The storage modulus clearly reflects changes in over time strain amplitude agreement theoretical predictions. Below critical structure will coarsen until generated but large amplitudes effective enough stop domain growth.

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