The Role of Interfacial Elasticity on the Rheological Behavior of Polymer Blends

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Polymer blends are commonly used to generate materials with a desired combination of performance properties and cost. Most polymer blends are compatibilized to promote stability of the otherwise immiscible components. Compatibilizers also modify the rheology of the blend in complex and important ways. We must integrate extensional rheology, shear rheology, and other techniques to develop a complete understanding of this rich behavior. This webinar will use case studies of two compatibilized blends to elucidate the effect that compatibilizers have on the elasticity of polymer blends and the mechanism behind that behavior.
Presented by Professor João Maia, Ph.D. - Department of Macro-molecular Science and Engineering - Case Western Reserve University
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CHAPTERS
0:00 Intro
2:40 Relevance of Extensional Flow
4:38 Why Polymer Blends?
8:15 Compatibilization Strategies
12:04 Morphology
13:08 Blends of Newtonian Components
15:45 Compatibilized Blends
16:35 PA-6/EPM/EPM-g-MA
17:56 Materials and Methods
19:24 Morphological Analysis on Extrudates
20:58 SAOS
24:39 Stress Relaxation After Steady Shear
27:39 Morphology
29:25 Stress Relaxation After a Step Elongation
30:59 PMMA/PS/PSOX
32:23 Chemical Composition/FTIR
32:39 Interfacial Tension
34:27 Blend Morphology (SEM)
35:02 Viscosity Ratios
36:03 SAOS
37:30 Stress Relaxation After Steady Shear
41:40 Effect of PSOX Concentration
42:50 Stress Relaxation After a Step Elongation
44:52 SALS
47:56 PP/EVOH/Na+
49:48 Blend Morphology (SEM)
50:32 Stress Relaxation After Steady Shear
52:28 Conclusions
53:56 Q&A

[@maxk.6230]

VERY well put together! Thanks for uploading