Strona Pracowni w budowie

Seminaria Samodzielnej Pracowni Polimerów i Biomateriałów

kolor czcionki + kolor tła = plan do 7 dni.

2019-06-17 11:30, Sala: S3 im. W. Fiszdona, piętro III
Johannes Ewald, M. Sc.
Johannes Gutenberg-Universität Mainz,
Institute of Organic Chemistry,
stażysta w SPPiB

Cleavable polyethylene glycol (PEG) for various biomedical applications

Despite its outstanding properties, the use of poly(ethylene glycol) (PEG) for biomedical applications is limited to molecular weights up to 30,000 g mol-1 to permit renal excretion. This major drawback can be overcome using cleavable PEG, which must be degradable under physiological conditions. This work focuses on the incorporation of vinyl ether moieties into the polyether backbone, to establish degradability at physiological relevant pH. Starting from allylic ether containing initiators or using 3,4 allyl epoxybutane as a comonomer for the classic anionic ring opening polymerization, allyl ether moieties can be introduced into the polyether backbone of PEG. Isomerization to vinyl ethers results in pH cleavable PEGs.
During the research stay in the Laboratory of Polymers and Biomaterials IPPT PAN, the preparation of crosslinked and pH cleavable PEG fibers obtained by electrospinning will be investigated, as well as the preparation of fibers from different poly(isoprene co styrene) copolymers of various architectures and topologies.

2019-05-20 12:00, Sala: S3 im. W. Fiszdona, piętro III
Seongpil An, PhD
Postdoctoral Research Associate
Multiscale Mechanics and Nanotechnology Laboratory (Advisor: Dr. Alexander L. Yarin)
Department of Mechanical and Industrial Engineering, University of Illinois at Chicago

Multidisciplinary applications of micro- and nanofibers for fourth industrial revolution technologies

Micro and nanoscale fiber technologies have changed the practices in various engineering fields. These technologies have merged with advanced materials to enable engineering constructs, which improve the thermal, electrical, and physicochemical features of resulting materials. Hitherto, various fiber forming technologies have enabled engineers and scientists to move to the next stage in their achievement with accompanying numerous theoretical and experimental studies on developed fibers. In the last decade, fiber-based techniques especially for transparent conducting films and extrinsic self-healing materials have emerged as promising platforms in multidisciplinary engineering related to fourth industrial revolution (4IR) technologies. During this presentation, I will highlight our research progresses on transparent conducting films and extrinsic self-healing materials, and also discuss our research in the area of soft actuators. The presented nano-textured fiber technologies will have broad applications in the engineering fields for 4IR technologies.

2018-07-09 13:00, Sala: S3 im. W. Fiszdona, piętro III
Dipl.-Chem. Kamil Maciol
Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz

Electrospinning and Crosslinking of Multifunctional Polyethylene Glycol Triblock Copolymers and Polystyrene Multiblock Copolymers

The lecture will be divided into three parts. First, short introduction of the polymer working group in Mainz (Prof. Frey Research Group) will be provided. The second part will be focused on doctoral thesis while the third one will deal with the activity during the research stay in the Lab. of Polymers and Biomaterials, IPPT PAN with emphasis on electrospinning of polyethylene glycol and polystyrene multiblock copolymers

2018-07-02 12:00, Sala: S3 im. W. Fiszdona, piętro III
Oliwia Jeznach, mgr inż.

Surface functionalization of polymer nanofibers for tissue engineering applications

Polycaprolactone (PCL) is one of the most commonly used polymers in tissue engineering applications. However, poor hydrophilicity and the lack of reactive functional groups on their surface limit their effective interactions with cells. To overcome this problem, the electrospun nanofibers of PCL were subjected to aminolysis reaction. This process improves surface wettability and provides free amino groups for further functionalization with bioactive molecules. In this presentation, results obtained for different conditions of aminolysis, as well as effectiveness of gelatin immobilization will be shown

2018-06-25 12:00, Sala: S3 im. W. Fiszdona, piętro III
mgr inż. Beata Niemczyk
doktorantka SPPiB IPPT PAN

Badania wpływu dodatku agarozy na kinetykę sieciowania metylocelulozy oraz właściwości mechaniczne termowrażliwych układów hydrożelowych

Układ hydrożelowy składa się metylocelulozy - polisacharydu sieciującego w temperaturze zbliżonej do fizjologicznej. Drugim składnikiem jest agaroza, wpływająca na kinetykę żelowania i właściwości mechaniczne hydrożelu. Wzajemne relacje ilościowe pomiędzy wodnymi roztworami składników hydrożelu poddano optymalizacji w celu osiągnięcia właściwości mechanicznych zbliżonych do właściwości tkanki nerwowej, przy zachowaniu czasu sieciowania, umożliwiającego injekcyjne podanie roztworu.

2018-06-18 12:00, Sala: S3 im. W. Fiszdona, piętro III
mgr inż.Asmaa Ahmed Arafa
Textile Research Division, National Research Centre,
Cairo, Egypt

Preparation and characterization of chitosan hydrogels for wound dressing applications