@article{EckertAbbasiMangetal.2020, author = {Eckert, Alexander and Abbasi, Mozhdeh and Mang, Thomas and Saalw{\"a}chter, Kay and Walther, Andreas}, title = {Structure, Mechanical Properties, and Dynamics of Polyethylenoxide/Nanoclay Nacre-Mimetic Nanocomposites}, series = {Macromolecules}, volume = {53}, journal = {Macromolecules}, number = {5}, publisher = {ACS Publications}, address = {Washington, DC}, issn = {1520-5835}, doi = {10.1021/acs.macromol.9b01931}, pages = {1716 -- 1725}, year = {2020}, abstract = {Nacre-mimetic nanocomposites based on high fractions of synthetic high-aspect-ratio nanoclays in combination with polymers are continuously pushing boundaries for advanced material properties, such as high barrier against oxygen, extraordinary mechanical behavior, fire shielding, and glass-like transparency. Additionally, they provide interesting model systems to study polymers under nanoconfinement due to the well-defined layered nanocomposite arrangement. Although the general behavior in terms of forming such layered nanocomposite materials using evaporative self-assembly and controlling the nanoclay gallery spacing by the nanoclay/polymer ratio is understood, some combinations of polymer matrices and nanoclay reinforcement do not comply with the established models. Here, we demonstrate a thorough characterization and analysis of such an unusual polymer/nanoclay pair that falls outside of the general behavior. Poly(ethylene oxide) (PEO) and sodium fluorohectorite form nacre-mimetic, lamellar nanocomposites that are completely transparent and show high mechanical stiffness and high gas barrier, but there is only limited expansion of the nanoclay gallery spacing when adding increasing amounts of polymer. This behavior is maintained for molecular weights of PEO varied over four orders of magnitude and can be traced back to depletion forces. By careful investigation via X-ray diffraction and proton low-resolution solid-state NMR, we are able to quantify the amount of mobile and immobilized polymer species in between the nanoclay galleries and around proposed tactoid stacks embedded in a PEO matrix. We further elucidate the unusual confined polymer dynamics, indicating a relevant role of specific surface interactions.}, language = {en} } @article{HeinzeMangPeteretal.2014, author = {Heinze, Daniel and Mang, Thomas and Peter, Karin and M{\"o}ller, Martin and Weichold, Oliver}, title = {Synthesis of low molecular weight poly(vinyl acetate) and its application as plasticizer}, series = {Journal of applied polymer science}, volume = {131}, journal = {Journal of applied polymer science}, number = {9}, publisher = {Wiley}, address = {New York}, issn = {1097-4628 (E-Journal); 0021-8995 (Print)}, doi = {10.1002/app.40226}, pages = {Article No. 40226}, year = {2014}, abstract = {Poly(vinyl acetate), PVAc, with a degree of polymerization Xn = 10 was prepared by chain-transfer radical polymerization using carbon tetrachloride and used as oligomeric plasticizer for commercial PVAc. However, the chlorinated chain ends cause a low thermal stability requiring mild Cl/H substitution. The product exhibits high thermal stability and excellent melt-compounding properties. Blends of oligomeric and commercial PVAc show single glass transition temperatures which decrease with higher oligomer content and exhibit small negative deviations from Fox' linear additivity rule. This indicates plasticization and miscibility being mainly due to entropic effects. Injection-moulded thick specimens show ductile behaviour at oligomer contents >10 wt \%, while sheets with a thickness of 0.2-0.5 mm appear flexible already at 7.5 wt \%. The oxygen permeability coefficients are an order of magnitude lower than those of low-density polyethylene. Due to the sum of their properties, the plasticized sheets present a promising alternative in the preparation of barrier materials.}, language = {en} } @article{Mang2004, author = {Mang, Thomas}, title = {Thermosensitive Magnetic Nanoparticles for Bioanalytical and Therapeutical Applications}, series = {Biomedizinische Technik = Biomedical Engineering. 49 (2004), H. 2}, journal = {Biomedizinische Technik = Biomedical Engineering. 49 (2004), H. 2}, isbn = {0013-5585}, pages = {1006 -- 1007}, year = {2004}, language = {en} } @article{MangHaulenaRose1994, author = {Mang, Thomas and Haulena, Friedhelm and Rose, Gerd}, title = {Trennung und werkstoffliche Verwertung von Aluminium-Kunststoff-Verbundmaterial}, series = {Aluminium. 70 (1994), H. 5/6}, journal = {Aluminium. 70 (1994), H. 5/6}, isbn = {0002-6689}, pages = {333 -- 339}, year = {1994}, language = {de} } @article{MangHaulena1995, author = {Mang, Thomas and Haulena, Friedhelm}, title = {Veranstaltung des 15. Kolloquiums Chemie und Technologie makromolekularer Stoffe: w{\"a}ssrige Kunststoffdispersionen, FH Aachen (1994)}, series = {Farbe und Lack. 101 (1995), H. 1}, journal = {Farbe und Lack. 101 (1995), H. 1}, isbn = {0014-7699}, pages = {72 -- 72}, year = {1995}, language = {de} } @book{GartzenHeilMang1992, author = {Gartzen, Johannes and Heil, G{\"u}nter and Mang, Thomas}, title = {Verfahren und Vorrichtung zur Isolierung von polymeren Werkstoffen und Metallen aus Verbundwerkstoffen / Offenlegungsschrift DE 4037523 A1 ; Offenlegungstag 27.05.1992}, publisher = {Deutsches Patentamt}, address = {M{\"u}nchen}, pages = {4 S.}, year = {1992}, language = {de} } @book{GartzenHeilMang1993, author = {Gartzen, Johannes and Heil, G{\"u}nter and Mang, Thomas}, title = {Verfahren zum Behandeln von miteinander mittels Haftvermittler verbundene Materialien / Offenlegungsschrift DE 4127705 A1 ; Offenlegungstag 25.02.1993 / Anmelder: Schering AG}, publisher = {Deutsches Patentamt}, address = {M{\"u}nchen}, pages = {4 S.}, year = {1993}, language = {de} } @book{Mang1994, author = {Mang, Thomas}, title = {Verfahren zum Trennen eines Kunststoffes von einem Tr{\"a}germaterial / Offenlegungsschrift DE 4313007 A1 ; Offenlegungstag 27.10.1994/ Anmelder und Erfinder : Mang, Thomas}, publisher = {Deutsches Patentamt}, address = {M{\"u}nchen}, pages = {4 S.}, year = {1994}, language = {de} } @book{GartzenHeilMang1998, author = {Gartzen, Johannes and Heil, G{\"u}nter and Mang, Thomas}, title = {Verfahren zur Aufbereitung eines Gemisches aus Zellulose und granuliertem Polymer / Patentschrift DE 4133699 C2}, publisher = {Deutsches Patentamt}, address = {M{\"u}nchen}, pages = {4 S.}, year = {1998}, language = {de} } @book{MangHeilGartzen1992, author = {Mang, Thomas and Heil, G{\"u}nter and Gartzen, Johannes}, title = {Verfahren zur Behandlung von Fotopapier / Patentschrift DE 4105368 C1}, publisher = {Deutsches Patentamt}, address = {M{\"u}nchen}, pages = {4 S.}, year = {1992}, language = {de} }