Publicaties
Induction of Maize Starch Gelatinization and Dissolution at Low Temperature by the Hydrotrope Sodium Salicylate KU Leuven
Complete aqueous dissolution of starch requires the use of temperatures exceeding 100 °C. During and after cooling of the resultant aqueous solutions, starch polymers precipitate by aggregation and crystallization. Low-temperature gelatinization and dissolution of maize starch (MS) is induced, and the stability of the resultant solutions is enhanced when they contain the hydrotrope sodium salicylate (NaSal). Differential scanning calorimetry and ...
Crystallinity of Bitumen via WAXD and DSC and Its Effect on the Surface Microstructure KU Leuven Universiteit Antwerpen
The Extent of Interlayer Bond Strength during Fused Filament Fabrication of Nylon Copolymers: An Interplay between Thermal History and Crystalline Morphology KU Leuven
One of the main drawbacks of Fused Filament Fabrication is the often-inadequate mechanical performance of printed parts due to a lack of sufficient interlayer bonding between successively deposited layers. The phenomenon of interlayer bonding becomes especially complex for semi-crystalline polymers, as, besides the extremely non-isothermal temperature history experienced by the extruded layers, the ongoing crystallization process will greatly ...
Phase Behavior and Polymorphism of Saturated and Unsaturated Phytosterol Esters KU Leuven
This study investigated how the physicochemical characteristics of phytosterol esters are influenced by the chain length and degree of unsaturation of the fatty acid ester moiety. Saturated and unsaturated phytosterol esters (PEs) were synthesized by the esterification of different types of fatty acids (stearic, palmitic, lauric, oleic, and linoleic acid) to β-sitosterol. The non-isothermal crystallization and melting behavior of the pure PEs ...
Rheological modifiers based on supramolecular block copolymers: From weak associations to interconnected micelles KU Leuven
© 2019 Elsevier B.V. The rheological spectra of poly(n-butyl acrylate) in the presence of a series of P(nBA-b-HEMA) rheology modifiers show a two-step relaxation process originating from the PnBA matrix and the self-assemblies. The HEMA segments are further grafted with strong, hydrogen bonding UPy groups, which both magnifies and slows down the relaxation of the assemblies. The extents of associations are enlightened by studying thermal ...
Quantification of isothermal crystallization of polyamide 12: Modelling of crystallization kinetics and phase composition KU Leuven
© 2018 Elsevier Ltd The crystallization of Polyamide 12 (PA12) has been investigated using a new experimental setup which allows in-situ synchrotron Wide Angle X-ray Diffraction (WAXD) during Flash-DSC measurements. The experimental results are used to parameterize and validate a new numerical model to quantify the quiescent crystallization kinetics, under isothermal conditions, of the three important crystal structures of PA12, i.e. the, γ− α′− ...