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Methods

Common Methods

  • polymer synthesis
  • polymer characterization

Special Techniques

Technique of reaction

MethodsEquipment / Model 
UV Excimer Curing ModuleHeraeus Noblelight, BlueLight UV-emitter length of emitter: 60 cm, wavelength: 308 nm 
Hg - Steam pressure lamp with HBO 50W/3 lamp, liquid-filter system and optical filterL.O.T. Oriel GmbH 
Thin layer evaporator for concentration of polymer solutions / purification from monomers, solvent reclaiming, and purification of temperature sensitive substances in vacuumILUDEST Destillationsanlagen GmbH 
Spray dryerMini Spray Dryer B-290, Büchi Labortechnik GmbH 
Stirrer tank reactorBüchi Laborrührautoklav bep 280 Büchi AG Uster 
Freeze drying system for organic solvents and for aqueous systemsZIRBUS technology
Christ
 
Lyophilization systemChrist Alpha 2-4 LDplus 
Modular System for synthesis, precipitation and work up of different polymersEquipment combinations for polymer preparation up to 1 kg material 
Explosion-proof Synthesis ChamberEnclosure approx. 12 m2 (useable height approx. 4,50 m) for work with higher amounts of volatile solvents 
   

Characterization

MethodsEquipment / Model 
FTIR-Spektroskopy (Recording of IR-spectra from solid bodies and liquids)Magna 550 , Nicolet (Transmission, attenuated total reflexion (ATR), reflection absorption spectra (RAS), time resolved spectra) 
Water determination of liquids and determination of bromine number of unsaturated bondsKarl-Fischer-Coulometer AQUA 40.00, analytikjenaAG (ECH) 
Determination of functional groups in polymers (-COOH, -OH, -SO3H, -NH2, Cl-, anhydride and epoxy) using potentiometric titrationTitrino 716 DMS, Metrohm 
Gel permeation chromatography (GPC, SEC) determination of molecular weight (MW) and MW distribution (Mw, Mn, Mz) as well as radii of gyration, GPC/FTIR-coupling for high boiling eluents e.g. DMFFour facilities with different components (detectors, eluents, and columns) for chloroform, THF and DMF, Jasco, PL, PSS, Wyatt, Lab Connections, Viscotek and Bures 
Vapour pressure osmometry, determination of molecular weight (Mn) in different solvents, Mn up to10 kDKnauer vapour pressure osmometer 
Membrane osmometrie, determination of molecular weight (Mn) in different solvents, Mn >10 kDGonotec membrane osmometer Osmomat 070 
Viscosimetry of polymer solutions, determination of intrinsic viscosity and MH-parametersProcess viscosimeter, Lauda and Vistec 
Rheology Rotation viskosimeter with cylinder and disc/disc geometrie for gels and polymer solutionsRheoviskosimeter (Rheotec), Haake MARS (Thermo Fischer) with Peltier- element und 20 / 60 mm disc/disc geometrie, RheoWin Software 
Thermally controlled polarisation microscopyAxio Imager A1M, Zeiss, transmitted and incident light, 4 different magnifications 5x,10x,20x,50x, Bertrand lenses system, CCD-Camera, hot stage LTS350 
Materials testing: tensile and compression (F = 20 N - 5 kN, with thermostat - 60°C to 150°C F = 20 N to 100 kN)Z 005 (Zwick), Z 2.5, (Zwick), Z 1,0 (Zwick)