@phdthesis{Kade2023, author = {Kade, Juliane Carolin}, title = {Expanding the Processability of Polymers for a High-Resolution 3D Printing Technology}, doi = {10.25972/OPUS-27005}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-270057}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2023}, abstract = {This thesis identifies how the printing conditions for a high-resolution additive manufacturing technique, melt electrowriting (MEW), needs to be adjusted to process electroactive polymers (EAPs) into microfibers. Using EAPs based on poly(vinylidene difluoride) (PVDF), their ability to be MEW-processed is studied and expands the list of processable materials for this technology.}, subject = {Polymere}, language = {en} } @phdthesis{Loeblein2021, author = {L{\"o}blein, Jochen}, title = {Development of Dynamic Self-Initiated Photografting and Photopolymerization}, doi = {10.25972/OPUS-25182}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-251828}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2021}, abstract = {After examining suitable parameters for a newly designed system, dynamic SIPGP could be developed. For the first time, SIPGP was performed while applying a constant flow of monomer solution through the reaction system. This added a new parameter: the flow rate (rfl). Accordingly, this parameter was examined, comparing dynamic to static SIPGP. It could be shown, that by applying higher rfl to the system, the contact angle increases, which indicates a slower coating. The flow patterns inside the reactor were then modelled and calculated. These calculations indicated, that, due to higher flow velocities, the contact angle on the coated samples would be lower on the sides of the sample and higher in the middle. This finding was verified by contact angle measurements. The influence of dynamic SIPGP on the temperature inside the reaction chamber during the reaction was examined by temperature sensors inside the reactor. This showed, that the constant flow of monomer solution can be utilized to decrease the warming of the reaction solution during the reaction. Finally it was shown, that dynamic SIPGP can decrease the formation of bulk polymer on the sample, which is forming during the reaction. This enables SIPGP to fabricate more homogeneous coatings by applying a constant monomer flow.}, subject = {Hydrogel}, language = {en} }