| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Pelto, Jani
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2023Compatibilized PC/ABS blends from solvent recycled PC and ABS polymers from electronic equipment wastecitations
- 2021Micromechanical performance of high-density polyethylene:experimental and modeling approaches for HDPE and its alumina-nanocompositescitations
- 2021Micromechanical performance of high-density polyethylenecitations
- 2020Tribological performance of high density polyethylene (HDPE) composites with low nanofiller loadingcitations
- 2020Feasibility of Mini-Scale Injection Molding for Resource-Efficient Screening of PP-Based Cable Insulation Nanocompositescitations
- 2020Feasibility of Mini-Scale Injection Molding for Resource-Efficient Screening of PP-Based Cable Insulation Nanocompositescitations
- 2020Feasibility of Mini-Scale Injection Molding for Resource-Efficient Screening of PP-Based Cable Insulation Nanocompositescitations
- 2019Matrix morphology and the particle dispersion in HDPE nanocomposites with enhanced wear resistancecitations
- 2019Durable and light weight polymer composites for extreme wear conditions - Abrasive wear and scratch resistance of polymer composites
- 2017Application of encapsulated superabsorbent polymers in cementitious materials for stimulated autogenous healingcitations
- 2017Application of encapsulated superabsorbent polymers in cementitious materials for stimulated autogenous healingcitations
- 2017Hydrophobization and smoothing of cellulose nanofibril films by cellulose ester coatingscitations
- 2016Uniform and electrically conductive biopolymer-doped polypyrrole coating for fibrous PLAcitations
- 2016Dielectric breakdown properties of mechanically recycled SiO2-BOPP nanocompositescitations
- 2015Influence of processing on the conductive properties of PANI-EB-filled polyethylenecitations
- 2015Application of Biopolymer Doped Polypyrroles in Biomedical Implants and Electrical Stimulation Devices
- 2014Structure and dielectric breakdown strength of nano calcium carbonate/polypropylene compositescitations
- 2014Encapsulation of 3-iodo-2-propynyl N-butylcarbamate (IPBC) in polystyrene-polycaprolactone (PS/PCL) blendscitations
- 2013Novel polypyrrole-coated polylactide scaffolds enhance adipose stem cell proliferation and early osteogenic differentiationcitations
- 2013Surface properties and interaction forces of biopolymer-doped conductive polypyrrole surfaces by atomic force microscopycitations
- 2012Surface modification of nanosilica for PP composites
- 2011Surface modification of nanosilica for PP composites
- 2011Investigation of the optimal processing parameters for picosecond laser-induced microfabrication of a polymer-ceramic hybrid materialcitations
- 2010Effect of low amount of nanosilica on dielectric properties of polypropylenecitations
- 2010Dielectric properties and partial discharge endurance of polypropylene-silica nanocompositecitations
- 2008Thermal, mechanical and dielectric properties of nanostructured epoxy-polyhedral oligomeric silsesquioxane compositescitations
- 2008Surface degradation of nanostructured polypropylene compounds caused by partial dischargescitations
- 2005Development of polyester and polyamide conductive fibrecitations
- 2004Electrical properties of polypropylene and polyaniline compoundscitations
- 2004Nonlinear DC voltage-current characteristics of new polymeric composite materials based on semiconductive polyaniline emeraldine base fillercitations
Places of action
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article
Uniform and electrically conductive biopolymer-doped polypyrrole coating for fibrous PLA
Abstract
Three-dimensional, fibrous scaffolds can be easily fabricated from polylactide (PLA) using melt spinning and textile techniques. However, the surface properties of PLA scaffolds are not ideal for tissue engineering purposes. Furthermore, electrically conducting scaffolds are required to deliver electrical stimulation to cells. In this study, uniform, electrically conducting polypyrrole (PPy) coatings were fabricated on biodegradable PLA fibers. Biopolymer dopants—hyaluronic acid (HA) and chondroitin sulfate (CS)—were compared, and a PPy/CS composition was analyzed further. The effect of the oxidative polymerization conditions on the PLA fibers and CS counterion was studied. Furthermore, the initial molecular weight of CS and its degree of polymerization were determined. Our experiments showed that the molecular weight of CS decreases under oxidizing conditions but that the decay is not significant with the short polymerization process we used. The coating process was transferred to nonwoven PLA fabrics, and the stability of PPy/CS coating was studied during in vitro incubation in phosphate buffer solution at physiological temperature. The conductivity and surface roughness of the coating decayed during the 20-day incubation. The mechanical strength, however, remained at the initial level. Thus, the fabricated structures are suitable for short-term electrical stimulation adequate to promote cell functions in specific cases.