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Polymer film formation in cement mortars modified with water-soluble polymers Universiteit Hasselt KU Leuven
The modification of cement mortars with small amounts of water-soluble polymers (polyvinyl alcohol-acetate, methylcellulose and hydroxyethylcellulose) is studied. During hardening, two processes can take place, i.e. cement hydration and polymer film or bridge formation. Due to the very low polymer contents, the formation of polymer films is generally not considered. In this paper, evidence is given of the presence of polymer films or bridges in ...
Clickable initiators, monomers and polymers in controlled radical polymerizations: a prospective combination in polymer science Universiteit Gent
Preparation of multifunctional and well-defined macromolecules requires a smart selection of the most suitable controlled polymerization technique in combination with appropriate click reactions. In this review, we provide an overview on the use of various U+2018U+2018clickableU+2019U+2019 initiators and monomers as well as on the postpolymerization modifications that have been widely used to construct clickable macromolecules. As such, this ...
Solidification of emulsified polymer solutions via phase inversion (SEPPI): A generic way to prepare polymers with controlled porosity KU Leuven
Porous polymeric structures with controlled porosity were prepared using a new approach involving solidification of emulsified polymer solutions via phase inversion (SEPPI). The new method starts from a polymeric emulsion for which the presence of nanosized particles or surfactants is crucial. Subsequent solidification of such emulsion is realized by simple contact with a polymer nonsolvent. The resulting solids exhibit spherical pores for which ...
Development of Photoinitiated Polymer Conjugation Reactions based on [2+2] Cycloadditions of Functionalized Polymers Universiteit Hasselt
Modern synthetic photochemistry was developed in the middle of the last century. Mainly academics show interest in the field, particularly in the preparation of organic compounds.170,171 Photochemistry has many advantages like spatial control. Reactions often require no further reagents than the compounds themselves and the solvents. In downstream processes, the product can be purified if necessary by conventional means. Up to now, only few ...
From polymers to clay polymer nanocomposites KU Leuven
© 2018 Elsevier Ltd Synthesis of clay mineral polymer nanocomposites (CPN) requires a match between the properties of the clay mineral surface and those of the adsorbed polymer. Once this match is achieved, CPN can be prepared with numerous applications in industry. The structural and physicochemical properties of 2:1 clay minerals used in CPN are briefly described first. The clay minerals provide a physicochemical barrier, a backbone for the ...
A stability study of polymer solar cells using conjugated polymers with different donor or acceptor side chain patterns KU Leuven Universiteit Hasselt Vrije Universiteit Brussel
Linear assembly of lead bromide-based nanoparticles inside lead(ii) polymers prepared by mixing the precursors of both the nanoparticle and the polymer KU Leuven
Mixing precursors of lead(ii) polymers with those of lead bromide-based nanoparticles (CH3NH3PbBr3 perovskites or PbBr2), at room temperature and in the presence of cyclohexanemethylammonium bromide, generated colloidal nanocomposites which, when deposited on a hydrophobic surface led to long, one-dimensional, ordered and well-defined architectures.