Two-dimensional fractionation of complex polymers by comprehensive online-coupled thermal field-flow fractionation and size exclusion chromatography

2020 ◽  
Vol 1107 ◽  
pp. 225-232 ◽  
Author(s):  
Zanelle Viktor ◽  
Harald Pasch
Keyword(s):  
Size Exclusion Chromatography ◽  
Thermal Field ◽  
Size Exclusion ◽  
Field Flow Fractionation ◽  
Two Dimensional ◽  
Exclusion Chromatography ◽  
Flow Fractionation ◽  
Complex Polymers

scholarly journals Impact of Electron Beam Irradiation on Thermoplastic Polyurethanes Unraveled by Thermal Field-Flow Fractionation

2020 ◽  
Author(s):  
Martin Geisler ◽  
Tuhin Subhra Pal ◽  
Kerstin Arnhold ◽  
Mikhail Malanin ◽  
Michael Thomas Müller ◽  
...  
Keyword(s):  
Electron Beam ◽  
Size Exclusion Chromatography ◽  
Electron Beam Irradiation ◽  
Thermal Field ◽  
Size Exclusion ◽  
Field Flow Fractionation ◽  
Beam Irradiation ◽  
Exclusion Chromatography ◽  
Flow Fractionation ◽  
The Impact

The impact of electron beam irradiation on thermoplastic polyurethane material was studied for both an aliphatic and an aromatic polyurethane with equal amount of hard and soft segments. Irradiation doses up to 300 kGy at room temperature and at 100 °C were applied. Changes in chemical structure, molar mass and size were assessed using infrared spectroscopy, differential scanning calorimetry, size exclusion chromatography and thermal field flow fractionation. Material alterations were correlated with trends regarding to degradation, crosslinking or branching changes. Thereby, limits of characteri-zation by size exclusion chromatography are addressed and amended by thermal field-flow fractionation studies. In addition, a thermophoretic analysis has been carried out complementary to the portfolio of analytical methods applied in this work.

scholarly journals Impact of Electron Beam Irradiation on Thermoplastic Polyurethanes Unraveled by Thermal Field-Flow Fractionation

2020 ◽  
Author(s):  
Martin Geisler ◽  
Tuhin Subhra Pal ◽  
Kerstin Arnhold ◽  
Mikhail Malanin ◽  
Michael Thomas Müller ◽  
...  
Keyword(s):  
Electron Beam ◽  
Size Exclusion Chromatography ◽  
Electron Beam Irradiation ◽  
Thermal Field ◽  
Size Exclusion ◽  
Field Flow Fractionation ◽  
Beam Irradiation ◽  
Exclusion Chromatography ◽  
Flow Fractionation ◽  
The Impact

The impact of electron beam irradiation on thermoplastic polyurethane material was studied for both an aliphatic and an aromatic polyurethane with equal amount of hard and soft segments. Irradiation doses up to 300 kGy at room temperature and at 100 °C were applied. Changes in chemical structure, molar mass and size were assessed using infrared spectroscopy, differential scanning calorimetry, size exclusion chromatography and thermal field flow fractionation. Material alterations were correlated with trends regarding to degradation, crosslinking or branching changes. Thereby, limits of characteri-zation by size exclusion chromatography are addressed and amended by thermal field-flow fractionation studies. In addition, a thermophoretic analysis has been carried out complementary to the portfolio of analytical methods applied in this work.

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