A5004560876- biodegradable polymer synthesis and properties
- Material Properties and Processing
- Polymer crystallization and properties
- Energetic Materials and Combustion
- Nanocomposite Films for Food Packaging
- Advanced Sensor and Energy Harvesting Materials
- Polymer Nanocomposites and Properties
- High-Velocity Impact and Material Behavior
- Microplastics and Plastic Pollution
- Carbon dioxide utilization in catalysis
- Synthesis and properties of polymers
- Electrospun Nanofibers in Biomedical Applications
- Membrane Separation and Gas Transport
- ZnO doping and properties
- Rocket and propulsion systems research
- Polymer Nanocomposite Synthesis and Irradiation
- Recycling and Waste Management Techniques
- Additive Manufacturing and 3D Printing Technologies
- Gas Sensing Nanomaterials and Sensors
- Advanced Cellulose Research Studies
- Conducting polymers and applications
- Textile materials and evaluations
- Copper-based nanomaterials and applications
- Polymer Science and Applications
- Nanomaterials and Printing Technologies
Hasselt University
2014-2025
IMEC
2020-2021
Artesis Plantijn Hogeschool Antwerpen
2009
Kodak (France)
1982
Xerox (France)
1981
Los Alamos National Laboratory
1978
Edwards (United Kingdom)
1974
Abstract Poly(lactic acid) is at present the most promising and commercially available bio‐based biocompostable (bio)plastic. The properties of PLA, however, are rather poor, notably its low glass transition temperature T g ∼55 °C, intrinsic crystallization rate limited barrier with respect to water, oxygen carbon dioxide in comparison oil‐based counterparts, polyesters (PET). In this manuscript we address question what could ultimately be achieved terms when PLA crystallized fully. fact,...
Abstract In this work, the effect of zinc oxide (ZnO) concentration and shape on processing properties new biaxially oriented polypropylene (BOPP)‐ZnO nanocomposites was studied. The use spherical nanoparticles nanorods expected to differently influence final material. Films isotactic prepared with different ZnO incorporation were under conditions temperature strain rate that similar those encountered in a commercial film process. Scanning electron microscopy analysis performed visualize...
Centrifugal fiber spinning has recently emerged as a highly promising alternative technique for the production of nonwoven, ultrafine mats. Due to its high rate, it could provide more technologically relevant than electrospinning. In this contribution, we examine influence polymer concentration and nozzle material on centrifugal process morphology. We find that increasing transforms from beaded-fiber regime continuous-fiber regime. Furthermore, not only diameter is strongly...
During thermoforming, plastic sheets are heated and subsequently deformed through the application of mechanical stretching and/or pressure. This process directly impacts sheet properties such as material thickness in walls, corners, bottom, crystallinity constituent layers, particularly oxygen gas permeability. The aim this study was to quantify impact thermoforming on transmission rate (OTR) selected packaging materials (polypropylene (PP); PP/ethylene-vinyl alcohol co-polymer/PP...
Biobased and biodegradable polyhydroxyalkanoates (PHAs) are currently gaining momentum. Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) polymer has a useful processing window for extrusion injection molding of packaging, agricultural fishery applications with required flexibility. Processing PHBHHx into fibers using electrospinning or centrifugal fiber spinning (CFS) can further broaden the application area, although CFS remains rather unexplored. In this study, centrifugally spun...
Two dynamic covalent networks based on the Diels–Alder reaction were blended to exploit properties of dissimilar polymer backbones. Furan-functionalized polyether amines poly(propylene oxide) (PPO) FD4000 and polydimethylsiloxane (PDMS) FS5000 mixed in a common solvent reversibly cross-linked with same bismaleimide DPBM. The morphology phase-separated blends is primarily controlled by concentration Increasing PDMS content results dilute droplet at 25 wt %, growing size droplets formation two...
Intelligent packaging is an emerging technology, aiming to improve the standard communication function of packaging. Radio frequency identification (RFID) assisted smart high interest, but uptake limited as market needs cost-efficient and sustainable applications. The integration screen printed antennas RFID chips labels in reusable cardboard could offer a solution. Although paper interesting recyclable material, printing on this substrate challenging ink conductivity highly influenced by...
Bio-based and biodegradable polyhydroxyalkanoates (PHAs) have great potential as sustainable packaging materials. The incorporation of zinc oxide nanoparticles (ZnO NPs) could further improve their functional properties by providing enhanced barrier antimicrobial properties, although current literature lacks details on how the characteristics ZnO influence structure–property relationships in PHA/ZnO nanocomposites. Therefore, commercial NPs with different morphologies (rod-like, spherical)...
In this paper a 28−4 fractional factorial design of experiments is applied to identify the important parameters that affect average diameter ZnO rods, synthesized by means hydrothermal procedure. A water-based Zn2+ precursor used for formation one-dimensional particles, without presence an organic additive. Results indicate that, at investigated levels, four have significant effect on mean diameter. These are temperature, heating rate, stirring and ultrasonic pre-treatment solution....
In an organic circular economy, biodegradable materials can be used as food packaging, and at end-of-life their carbon atoms recovered for soil enrichment after composting, so that new or produced. Packaging functionality, such mechanical, gas barrier, heat-seal performance, of emerging with a laminated, coated, monomaterial, and/or blended structure, is not yet well known in the industry. This lack knowledge, addition to concerns, high cost, production limits one main bottlenecks broad...
The properties of nanocomposites biodegradable polycaprolactone containing zinc oxide (ZnO) nanoparticles with diverse morphologies, that is, ZnO nanospheres, nanorods, and nanodisks are investigated. It is demonstrated for the first time dual action reduces gas permeability via two mechanisms: by creation a tortuous path second adsorption. Depending on morphology particles, oxygen can be reduced more than 60%. Tensile tests show remain very ductile. nominal strain all higher 500% before...
Biobased and biodegradable polyhydroxyalkanoates (PHAs) have great potential as sustainable packaging materials. However, improvements in their processing mechanical properties are necessary. In this work, the influence of melt conditions on microstructure poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) is examined using a full factorial design experiments (DoE) approach. We found that strict control over temperature, mold screw speed, cooling time leads to highly increased elongation...
Due to a dominant one-dimensional growth rate, nanoparticles of zinc oxide often show rodlike morphology. As result, the synthesis small spherical undoped ZnO remains challenging. This paper presents two procedures that successfully produce powder consisting equiaxed nanoparticles: one using polyethylene glycol- (PEG-) assisted solvothermal method and other by calcination oxalate obtained from microemulsion-mediated method. In latter, zinc-substituted aerosol OT (AOT) is used as surfactant....