TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Sapalidis, Andreas A.
A1  - Karantzis, Panagiotis I.
A1  - Vairis, Achilles
A1  - Nitodas, Stephanos F.
A1  - Barbe, Stéphan
A1  - Favvas, Evangelos P.
T1  - A Study of the Reinforcement Effect of MWCNTs onto Polyimide Flat Sheet Membranes
JF  - Polymers
N2  - Polyimides rank among the most heat-resistant polymers and find application in a variety of fields, including transportation, electronics, and membrane technology. The aim of this work is to study the structural, thermal, mechanical, and gas permeation properties of polyimide based nanocomposite membranes in flat sheet configuration.  For this purpose, numerous advanced techniques such as atomic force microscopy (AFM), SEM, TEM, TGA, FT-IR, tensile strength, elongation test, and gas permeability measurements were carried out. In particular, BTDA–TDI/MDI (P84) co-polyimide was used as the matrix of the studied membranes, whereas multi-wall carbon nanotubes were employed as filler material at concentrations of up to 5 wt.% All studied films were prepared by the dry-cast process resulting in non-porous films of about 30–50 μm of thickness. An optimum filler concentration of 2 wt.% was estimated. At this concentration, both thermal and mechanical properties of the prepared membranes were improved, and the highest gas permeability values were also obtained. Finally, gas permeability experiments were carried out at 25, 50, and 100 ◦C with seven different pure gases. The results revealed that the uniform carbon nanotubes dispersion lead to enhanced gas permeation properties.
KW  - Mehrwandige Kohlenstoff-Nanoröhre
KW  - Polymer nanocomposite materials
KW  - Mixed matrix membranes
KW  - Carbon nanotubes
KW  - Mechanical properties
KW  - Thermal properties
KW  - Gas permeability
KW  - Verstärkung
KW  - Membran
Y1  - 2020
UN  - https://nbn-resolving.org/urn:nbn:de:hbz:832-epub4-15565
SN  - 2073-4360
SS  - 2073-4360
U6  - https://doi.org/10.3390/polym12061381
DO  - https://doi.org/10.3390/polym12061381
VL  - 12
IS  - 6
SP  - 21
S1  - 21
PB  - MDPI
ER  -