Johannes Krämer

ORCID: 0009-0000-3488-4973
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Research Areas
  • Engineering and Materials Science Studies
  • Flame retardant materials and properties
  • Fire dynamics and safety research
  • Crystallization and Solubility Studies
  • Additive Manufacturing and 3D Printing Technologies
  • Manufacturing Process and Optimization
  • Polymer crystallization and properties
  • Natural Fiber Reinforced Composites
  • Solar Thermal and Photovoltaic Systems
  • Radiative Heat Transfer Studies
  • Advanced Condensed Matter Physics
  • Photopolymerization techniques and applications
  • Physics of Superconductivity and Magnetism
  • Electromagnetic wave absorption materials
  • Physics and Engineering Research Articles
  • Epoxy Resin Curing Processes
  • Analytical Chemistry and Chromatography
  • Polymer Nanocomposites and Properties
  • Phase Change Materials Research
  • Drug Solubulity and Delivery Systems
  • Magnetic and transport properties of perovskites and related materials
  • Mechanical Engineering and Vibrations Research

Montanuniversität Leoben
2024

Austrian Institute of Technology
2020

PHV Dialysezentrum
2016

University of Bayreuth
2009-2015

Condensed-phase mechanisms play a major role in fire-retardant polymers. Generations of development have followed the concept charring to improve fire properties. Whereas principal reactions are believed be known, specific description for multicomponent systems is lacking, as picture across different systems. A two-step approach proposed general, and also presented greater detail. The second step covers controlling charring, whereas actual reactants provided preceding step. This model...

10.1002/mame.201500250 article EN Macromolecular Materials and Engineering 2015-10-09

Abstract The pyrolysis and fire behavior of halogen‐free flame‐retarded DGEBA/DMC, RTM6 their corresponding 60 vol.‐% carbon fibers (CF) composites were investigated. A novel phosphorous compound (DOPI) was used. Its action is dependent on the epoxy matrix. DGEBA/DMC DOPI decompose independently each other. Only flame inhibition occurs in gas phase. shows a condensed phase interaction increasing charring. Both mechanisms decrease with irradiance, whereas RTM6‐CF charring suppressed at low...

10.1002/mame.201000242 article EN Macromolecular Materials and Engineering 2010-09-30

The area-proportional baseline method generates phase fraction–temperature curves from heat capacity data of change materials. describe the continuous conversion solid to liquid over an extended temperature range. They are consistent with apparent and enthalpy modeling approach for numerical solution transfer problems. However, non-smooth, discrete signals. affected by noise in should not be used as input simulation models. This contribution proposes alternative based on spline approximation...

10.3390/en13195149 article EN cc-by Energies 2020-10-02

Polypropylene from post-consumer waste (PCR-PP) was melt-mixed with a di- and trifunctional molecule treated E-Beam radiation, to increase its viscosity melt strength by long-chain branching partial crosslinking. After adding diallyl- or triallylisocyanurate polypropylene compounding, the compounds were subjected e-beam irradiation doses between 10 60 kGy. Two types of recyclates investigated, both differing in content polyethylene. The samples investigated respect formation microgels (gel...

10.1016/j.radphyschem.2024.111846 article EN cc-by Radiation Physics and Chemistry 2024-05-14

The ruthenium-based layered cuprates RuSr(2)GdCu(2)O(8) (RuGd1212) can be considered naturally occurring magnetic and superconducting multilayer systems. We have concentrated on the preparation of RuGd1212-type compounds with nominally stoichiometric composition under ambient pressure conditions. For small rare earth ions R = Gd, Eu (and Sm), single phase are obtained typical ordered structure no significant changes physical properties. With large (R Nd, Pr), multiphase samples obtained. In...

10.1088/0953-8984/21/25/254210 article EN Journal of Physics Condensed Matter 2009-05-29

Importance of Data Transparency, Openness, and Reproducibility in Dissolution Science Technology" (1).As a follow-up, this commentary more specifically provides scan current practices the literature that are applicable to solubility data reported Technologies, with goal enhancing reproducibility meaningful interpretations these data.Any understanding, interpretation, reporting measurement for drug compound depends on accurate reliable experimental values.In turn, values influenced by...

10.14227/dt260419p6 article EN Dissolution Technologies 2019-11-01

A joint workshop of the American Association Pharmaceutical Scientists (AAPS) and Chinese National Institutes for Food Drug Control (

10.14227/dt230416p46 article EN Dissolution Technologies 2016-01-01
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