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Assessment of provoked compatibility of NBR/SBR polymer blend with montmorillonite amphiphiles from the thermal degradation kinetics Vrije Universiteit Brussel
Chemical modification of montmorillonite (MMT-Na or mont-0) was achieved using different doses of cetyltrimethylammonium bromide to produce montmorillonite amphiphiles until reaching the ultimate hydrophobic form (mont-100). The order of hydrophobicity increases in the direction mont-0 < mont-25 < mont-50 < mont-100. 20 phr of each amphiphilic montmorillonite was utilized independently as compatibilizing filler for NBR/SBR (50/50) ...
PES/Quaternized-PES blend anion exchange membranes : investigation of polymer compatibility and properties of the blend Universiteit Gent
A ground breaking polymer blend for CO2/N2 separation KU Leuven
© 2018 Elsevier Ltd. All rights reserved. The commercial polyetherimide sulfone polymer Extem was blended with polyethersulfone (PES) to achieve a new, highly selective membrane for CO2/N2 separation in order to allow for a breakthrough in carbon capture applications. The miscibility and molecular interaction between PES and Extem for blend compositions 80/20, 50/50 and 20/80 w/w were evaluated. Differential Scanning Calorimetry showed that of ...
Electrospinning and morphology characterization of polymer blend nanofibers Universiteit Gent
This PhD explores the potential of blend electrospinning for the production of nanofibers containing a synthetic component, a natural component and/or well-immobilized pH-sensitive dye molecules for biomedical and colorimetric sensor applications. Within this investigation, focus is given to process stability and scalability using a solvent system with limited toxicity, namely acetic acid/formic acid, and subsequent analysis of the obtained ...
Hybrid polymer electrolytes based on a poly(vinyl alcohol)/poly(acrylic acid) blend and a pyrrolidinium-based ionic liquid for lithium-ion batteries KU Leuven
Copyright © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Polymer blends of poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAA) were prepared with different molar ratios by a solvent-casting technique. The XRD patterns of the blends show that the degree of crystallinity of the PVA membranes decreases with the addition of PAA owing to the formation of interpenetrating polymer chains. The vibrational spectra of the blend membranes reveal ...
Tuning of PCDTBT:PC71BM blend nanoparticles for eco-friendly processing of polymer solar cells Universiteit Hasselt KU Leuven Universiteit Antwerpen
We report the controlled preparation of water processable nanoparticles (NPs) employing the push-pull polymer PCDTBT and the fullerene acceptor PC71BM in order to enable solar cell processing using eco-friendly solvent (i.e. water). The presented method provides the possibility to separate the formation of the active layer blend and the deposition of the active layer into two different processes. For the first time, the benefits of aqueous ...
Electrochemical performance of polymer electrolytes based on Poly (vinyl alcohol)/Poly(acrylic acid) blend and Pyrrolidinium ionic liquid for lithium rechargeable batteries KU Leuven
Polymer electrolytes offer the most promising solution to address the all-solid-state battery requirements such as flexibility, leak-proof packing and easy processing. In this study, a polymer blend of 25 mol% poly(acrylic acid) (PAA) and 75 mol% poly(vinyl alcohol) (PVA) was optimized based on its thermal, mechanical and structural properties. The ionic liquid (IL) electrolyte, 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide ...
Spatially and Temporally Resolved Heterogeneities in a Miscible Polymer Blend KU Leuven
Mapping the spatial and temporal heterogeneities in miscible polymer blends is critical for understanding and further improving their material properties. However, a complete picture on the heterogeneous dynamics is often obscured in ensemble measurements. Herein, the spatial and temporal heterogeneities in fully miscible polystyrene/oligostyrene blend films are investigated by monitoring the rotational diffusion of embedded individual probe ...