TY - JOUR A1 - Vukicevic, Radovan A1 - Hierzenberger, Peter A1 - Hild, Sabine A1 - Beuermann, Sabine T1 - Functionalization of carbon black nanoparticles with poly(vinylidene fluoride) N2 - The surface of carbon black (CB) nanoparticles was functionalized with poly(vinylidene fluoride) (PVDF) either by trapping of macroradicals or by cycloaddition. PVDF with two iodine end groups (I-PVDF-I) obtained from iodine transfer polymerization in supercritical CO2 was heated in the presence of CB and the C-I bond was cleaved resulting in a reaction between the macroradical and the CB surface. To allow for cycloaddition of PVDF to the CB surface for a number of polymers, the iodine end groups were replaced by azide end groups. In addition, microwave irradiation was applied to the functionalization. The influence of temperature, time, polymer concentration, and polymer molar mass on the functionalization reaction was examined. Y1 - 2010 UR - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291542-9369 U6 - https://doi.org/10.1002/Pola.24277 SN - 0887-624X ER - TY - JOUR A1 - Vukicevic, Radovan A1 - Vukovic, Ivana A1 - Stoyanov, Hristiyan A1 - Korwitz, Andreas A1 - Pospiech, Doris A1 - Kofod, Guggi A1 - Loos, Katja A1 - ten Brinke, Gerrit A1 - Beuermann, Sabine T1 - Poly(vinylidene fluoride)-functionalized single-walled carbon nanotubes for the preparation of composites with improved conductivity JF - Polymer Chemistry N2 - The surface of single-walled carbon nanotubes (SWCNTs) was functionalized with azide-terminated poly(vinylidene fluoride) (PVDF). Functionalization was confirmed by dispersibility, Raman spectroscopy, and thermogravimetric analyses. Raman spectra show disordering of the SWCNTs, thus, strongly suggesting that PVDF was covalently attached to SWCNTs. Functionalized SWCNTs were mixed with commercially available PVDF in a twin-screw extruder and thin films were obtained by melt-pressing. Films containing 0.5 and 1 wt% PVDF-functionalized SWCNTs exhibited significantly improved electrical conductivity compared to PVDF films containing pristine SWCNTs. Y1 - 2012 U6 - https://doi.org/10.1039/c2py20166f SN - 1759-9954 VL - 3 IS - 8 SP - 2261 EP - 2265 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Vukicevic, Radovan A1 - Beuermann, Sabine T1 - Fullerenes decorated with poly(vinylidene fluoride) JF - Macromolecules : a publication of the American Chemical Society N2 - Fullerenes decorated with poly(vinylidene fluoride) (PVDF) were synthesized in a three-step procedure: Iodine transfer polymerization of vinylidene fluoride with C(6)F(12)I(2) as the chain transfer agent was carried out in supercritical carbon dioxide to synthesize iodine-terminated PVDF, which was subsequently transformed to azide-terminated polymer. Finally, azide-terminated PVDF chains were attached to a fullerene core under microwave irradiation at 160 degrees C in 1.5 h. The materials were characterized by NMR, FT-IR, UV/vis, GPC, elemental analysis, and DSC. On average, 4-5 PVDF chains are attached to one C(60) moiety. FT-IR spectra and DSC measurements indicate that the polymer end groups strongly affect the crystallinity of the material. For PVDF with azide end groups and PVDF attached to fullerenes the fraction of the beta polymorph is dominant while alpha polymorphs are almost absent. Y1 - 2011 U6 - https://doi.org/10.1021/ma102754c SN - 0024-9297 VL - 44 IS - 8 SP - 2597 EP - 2603 PB - American Chemical Society CY - Washington ER - TY - CHAP A1 - Vukicevic, Radovan A1 - Schreiber, Ulrike A1 - Beuermann, Sabine T1 - Azide-terminated poly(vinylidene fluoride) as building block for nanocomposite materials and block copolymers T2 - Abstracts of papers : joint conference / The Chemical Institute of Cananda, CIC, American Chemical Society, ACS Y1 - 2011 SN - 0065-7727 VL - 242 IS - 16 PB - American Chemical Society CY - Washington ER - TY - CHAP A1 - Schreiber, Ulrike A1 - Vukicevic, Radovan A1 - Beuermann, Sabine T1 - Block copolymers of poly(vinylidene fluoride) obtained via 1,3 dipolar cycloaddition T2 - Abstracts of papers : joint conference / The Chemical Institute of Cananda, CIC, American Chemical Society, ACS Y1 - 2011 SN - 0065-7727 VL - 242 PB - American Chemical Society CY - Washington ER - TY - JOUR A1 - Vukicevic, Radovan A1 - Schwadtke, Ulrike A1 - Schmuecker, Simon A1 - Schaefer, Philipp A1 - Kuckling, Dirk A1 - Beuermann, Sabine T1 - Alkyne-azide coupling of tailored poly(vinylidene fluoride) and polystyrene for the synthesis of block copolymers JF - Polymer Chemistry N2 - The synthesis of block copolymers consisting of poly(vinylidene fluoride) (PVDF) and polystyrene (PS) is reported. Firstly, a propargyl-functionalized alkoxyamine initiator (PgOTIPNO) was prepared and subsequently used for the preparation of a propargyl-terminated PS homopolymer of different chain lengths with low dispersities via nitroxide-mediated radical polymerization. A tailored PVDF homopolymer with iodine end groups originating from iodine transfer polymerization was transformed to PVDF with azide end group. Then, alkyne-terminated PS with different molecular weights and azide-terminated PVDF were joined together via copper-catalyzed alkyne-azide coupling. The block copolymers were characterized using H-1-NMR, F-19-NMR, IR, SEC, and DSC. Y1 - 2012 U6 - https://doi.org/10.1039/c1py00427a SN - 1759-9954 VL - 3 IS - 2 SP - 409 EP - 414 PB - Royal Society of Chemistry CY - Cambridge ER -