TY - JOUR A1 - Eckert, Alexander A1 - Abbasi, Mozhdeh A1 - Mang, Thomas A1 - Saalwächter, Kay A1 - Walther, Andreas T1 - Structure, Mechanical Properties, and Dynamics of Polyethylenoxide/Nanoclay Nacre-Mimetic Nanocomposites JF - Macromolecules N2 - 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. Y1 - 2020 U6 - http://dx.doi.org/10.1021/acs.macromol.9b01931 SN - 1520-5835 VL - 53 IS - 5 SP - 1716 EP - 1725 PB - ACS Publications CY - Washington, DC ER - TY - JOUR A1 - Mang, Thomas A1 - Kricheldorf, Hans R. T1 - Stereospecificity of peptide synthesis by means of phosphorus derivatives: a model of peptide synthesis in molecular evolution / Kricheldorf, Hans R. ; Mang, Thomas JF - International Journal of Biological Macromolecules. 5 (1983), H. 5 Y1 - 1983 SN - 0141-8130 SP - 258 EP - 266 ER - TY - JOUR A1 - Mang, Thomas A1 - Kolz, J. A1 - Goga, N. A1 - Casanova, F. T1 - Spatial localization with single-sided NMR sensors / Kolz, J. ; Goga, N. ; Casanova, F. ; Mang, T. ; Blümich, B. JF - Applied Magnetic Resonance. 32 (2007), H. 1-2 Y1 - 2007 SN - 0937-9347 SP - 171 EP - 184 ER - TY - JOUR A1 - Mang, Thomas T1 - Recycling von Getränkekartons aus Verbundmaterial JF - Kunststoffrecycling in Sachsen ; 1. ; Dresden, 26. - 27. Februar 1992 Y1 - 1992 SP - 34 EP - 43 PB - Techn. Univ. CY - Dresden ER - TY - JOUR A1 - Mang, Thomas A1 - Haulena, Friedhelm T1 - Recycling of Polymeric Composites JF - Invited and contributing lectures presented at the 38th Microsymposium on Recycling of Polymers : held in Prague, Czech Republic, July 14 - 17, 1997 / International Union of Pure and Applied Chemistry, Macromolecular Division. Symposium ed. J. Kahovec. Y1 - 1998 N1 - Macromolecular symposia ; 135 ; Microsymposium on Recycling of Polymers <38, 1997, Praha> SP - 147 EP - 156 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Mang, Thomas T1 - Polymer Magnetic Particles for Isolating Biomolecules, Especially Nucleic Acids JF - Biomedizinische Technik = Biomedical Engineering. 49 (2004), H. 2 Y1 - 2004 SN - 0013-5585 SP - 1008 EP - 1009 ER - TY - JOUR A1 - Mang, Thomas A1 - Kricheldorf, Hans R. A1 - Jonté, J. Michael T1 - Polylactones. 1. Copolymerizations of glycolide and &beta-caprolactone / Kricheldorf, Hans R. ; Mang, Thomas ; Jonté, J. Michael JF - Macromolecules. 17 (1984), H. 10 Y1 - 1984 SN - 0024-9297 SP - 2173 EP - 2181 ER - TY - JOUR A1 - Mang, Thomas A1 - Kricheldorf, Hans R. A1 - Jonté, J. Michael T1 - Polylactones, 2. Copolymerization of glycolide with β-propiolactone, χ-butyrolactone or δ-valerolactone / Kricheldorf, Hans R. ; Mang, Thomas ; Jonté, J. Michael JF - Die makromolekulare Chemie. 186 (1985), H. 5 Y1 - 1985 SN - 1022-1352 SP - 955 EP - 976 ER - TY - JOUR A1 - Mang, Thomas A1 - Haulena, Friedhelm T1 - Monodisperse latex particles with functional groups JF - Modification of polymers : 4th Dresden Polymer Discussion ; September 22 to 25, 1992 at Gaussig / Dresden University of Technology, Department of Macromolecular Chemistry and Textile Chemistry; Institute of Polymer Technology Dresden. [Organizers: Claudia Kummerlöwe ...] Y1 - 1992 N1 - Dresdner Polymer Discussion <4, 1992, Gaußig> SP - 68 EP - 88 PB - Univ. CY - Dresden ER - TY - JOUR A1 - Mang, Thomas A1 - Kricheldorf, Hans R. A1 - Au, M. T1 - Models of molecular evolution. 2. Stereospecificity of dipeptide syntheses by means of cyanamides and carbodiimides / Kricheldorf, Hans R. ; Au, M. ; Mang, Thomas JF - International journal of peptide and protein research. 26 (1985), H. 2 Y1 - 1985 SN - 0300-9769 SP - 149 EP - 157 ER -